Emerson 98 Data Sheet

Bulletin 71.4:98
98 Series Backpressure Regulators and Relief Valves
W6155
TYPE 98H
W6157
November 2009
W6158
TYPE 98HD
Figure 1. Typical 98 Relief Valves
Introduction
The 98 Series (Figure 1) is used for backpressure or relief applications in liquid, gas, air, and steam service. The Types 98L, 98H, and 98HH are direct­operated and spring-loaded. The Types 98LD and 98HD use additional pressure loading to maintain relief differential pressures, backpressures or for remote setpoint adjustment.
The Type 98HM is a direct-operated, spring to close regulator for backpressure or relief applications in liquid, gas, or steam service. The regulator requires no external power to operate and features a sensing line connection for sensing pressure externally from the regulator. A seal washer for the set screw can be included when applications require pressure loading of the spring case (not available on NPS 1-1/2 and 2 bodies (DN 40 and 50)).
Using a Type 98HM as a relief valve does not exclude the installation of an ASME certied full ow valve as specied by local codes and regulations or system design.
W6156
TYPE 98L
Features
• Versatility—Typical applications include
backpressure on pumps, maintaining differential pressure across lubricated seals, steam header pressure, fuel and oil lines, air supply systems, pump bypass applications for API general and special purpose lube and seal oil systems, relief
applications for ash tanks and accumulators, and
other process and industrial uses.
• Excellent Fluid Compatibility—Diaphragms come in stainless steel, Monel®, Hastelloy® C, or elastomers, and body is available in cast iron and steel as well as stainless steel, Hastelloy® C, and Monel®. Corrosion­ resistant trims are available.
• Close, Stable Regulation—Diaphragm is isolated
from the main ow stream. Slotted valve plug and
pusher post assembly provides positive guiding for improved shutoff.
• Compact Design—Small size allows easy installation in limited spaces.
Hastelloy® C is a mark owned by Haynes International, Inc. Monel® is a mark owned by Special Metals Corporation.
D100153X012
www.sherregulators.com
Bulletin 71.4:98
Specications
Available Constructions Type 98L: Direct-operated low-pressure
backpressure/relief valve with internal pressure registration and standard adjusting screw for 2 to 38 psig (0,14 to 2,6 bar) set pressure range
Type 98LD: Pressure-loaded low-pressure backpressure/relief valve with internal pressure registration and handwheel adjustment for 2 to 38 psi (0,14 to 2,6 bar) differential set pressure range
Type 98H: Direct-operated high-pressure backpressure/relief valve with internal pressure registration and standard adjusting screw for 5 to 200 psig (0,35 to 13,8 bar) set pressure range
Type 98HD: Pressure-loaded low-pressure backpressure/relief valve with internal pressure registration and handwheel adjustment for 5 to 200 psi (0,35 to 13,8 bar) differential set pressure range
Type 98HH: Direct-operated high-pressure backpressure/relief valve with internal pressure registration and standard adjusting screw for 150 to 375 psig (10,3 to 25,9 bar) set pressure range
Type 98HHD: Pressure-loaded high-pressure backpressure/relief valve with internal pressure registration and handwheel adjustment for 150 to 375 psi (10,3 to 25,9 bar) differential set pressure range
Type 98HM: Direct-operated high-pressure backpressure/relief valve with external pressure registration and standard adjusting screw for 5 to 275 psig (0,35 to 19,0 bar) set pressure range
Body Sizes and End Connection Styles
BODY MATERIAL
TYPES
98L and 98LD 1/4, 1/2, 3/4, 1 NPT
98H and 98HD
98HM
98HH, 98HHD
Cast Iron
1/4, 1/2, 3/4, 1,
1-1/2, 2 NPT
- - - - 1/2, 3/4, 1, 1-1/2, 2 NPT 1/4, 1/2, 3/4, 1 NPT
WCC Steel,
CF8M Stainless steel,
Hastelloy
NPS 1/2 through 1 SWE,
NPS 1/2 through 2 SWE,
CL150 RF, CL300 RF,
®
C, Monel
1/4 through 1 NPT,
CL150RF, CL300RF,
PN 16/25/40 RF
1/4 through 2 NPT,
PN 16/25/40 RF
®
Construction Materials
BODY SPRING CASE
Cast iron, WCC Steel, CF8M
Stainless steel, Monel
Hastelloy® C
®
, or
Cast iron, WCC Steel, or
CF8M Stainless steel
Trim Materials
See Table 1
Maximum Cold Working Pressures of Body Size and Material
REGULATOR
Type 98L All Sizes
Type 98LD All Sizes
Type 98H All Sizes
Type 98HD All Sizes
Type 98HH,
98HHD
Type 98HM All Sizes
(1)(3)
BODY
SIZE
All Sizes
BODY AND
SPRING CASE
MATERIALS
Cast Iron
Steel
Stainless Steel
Cast Iron
Steel
Stainless Steel
Cast Iron
Steel
Stainless Steel
Cast Iron
Steel
Stainless Steel
Cast Iron
Steel
Stainless Steel
Steel
Stainless Steel
MAXIMUM INLET
PRESSURE
PSIG (bar)
150 (10,3) 150 (10,3)
300 (20,7) 300 (20,7) 300 (20,7)
300 (20,7) 400 (27,6) 400 (27,6)
400 (27,6) 400 (27,6) 400 (27,6)
300 (20,7) 300 (20,7)
(2)(4)
60 (4,1) 125 (8,6) 125 (8,6)
60 (4,1)
Relief Pressure Ranges
See Table 2
Temperature Capabilities for Elastomer Parts
MATERIAL TEMPERATURE RANGE
Nitrile (NBR) -40° to 180°F (-40° to 82°C)
Neoprene (CR) -40° to 180°F (-40° to 82°C)
Fluorocarbon (FKM)
Ethylenepropylene (EPDM)
Peruoroelastomer (FFKM)
Polytetrauoroethylene (PTFE)
Diaphragm protector
(6)
(6)
(6)
(6)
0° to 300°F (-18° to 149°C)
Limited to 200°F (93°C) for hot water
-40° to 275°F (-40° to 135°C)
0° to 425°F (-18° to 218°C)
-40° to 400°F (-40° to 204°C)
(1)(5)
1. The pressure/temperature limits in this Bulletin and any applicable standard limitation should not be exceeded.
2. Loading pressure plus spring setting should not exceed maximum inlet pressure.
3. Temperature and/or the body end connection may decrease these maximum pressures.
4. Maximum inlet pressure equals set pressure plus build-up.
5. Pressure and/or the body end connection may decrease these maximum temperatures.
6. Not for use on steam service.
7. Not available for Type 98HM.
2
Specications (continued)
Bulletin 71.4:98
Temperature Capabilities for Metal Parts
MATERIAL TEMPERATURE RANGE
(7)
Cast Iron
WCC Steel -20° to 450°F (-29° to 232°C)
CF8M Stainless steel, Monel
Hastelloy
®
C
®
, or
-40° to 406°F (-40° to 208°C)
-40° to 450°F (-40° to 232°C)
(1)(5)
Maximum Spring Case Loading Pressure for Types 98LD and 98HD (Spring Setting Plus Loading Pressure)
(1)(2)
Type 98LD Spring Case Cast Iron: 50 psig (3,4 bar) Steel or Stainless steel: 125 psig (8,6 bar) Type 98HD Spring Case Cast Iron: 235 psig (16,2 bar) Steel or Stainless steel: 300 psig (20,7 bar)
Type 98HHD Spring Case
Cast Iron: 250 psig (17,2 bar) Steel or Stainless steel: 250 psig (17,2 bar)
Shutoff Classication Per ANSI/FCI 70-3-2004 Metal Seats: Class IV
PTFE: Class IV Elastomer Seats: Class VI
Flow Coefcient C1: 35
Type 98HM Sensing Line Connection 1/2, 1-1/2, or 2 NPT body: 1/8 NPT 3/4 or 1 NPT body: 1/4 NPT
IEC Sizing Coefcients
BODY SIZES,
NPS (DN)
1/4
1/2 (15) 0.83 0.69
3/4 and 1
(20 and 25)
1-1/2 and 2 (40 and 50)
Capacities Types 98L and 98LD: See Tables 3 through 7
Types 98H and 98HD: See Tables 8 through 12 Type 98HH and 98HHD: See Tables 13 through 17 Type 98HM: See Tables 18 through 21
Options
• Handwheel or tee handle for Types 98L, 98H,
and 98HH
• Tapped spring case vent for Types 98L, 98H,
98HH, and 98HM
• Seal washer to permit spring case pressure
loading for Types 98L, 98H, 95HH, and 98HM
1. The pressure/temperature limits in this Bulletin and any applicable standard limitation should not be exceeded.
2. Loading pressure plus spring setting should not exceed maximum inlet pressure.
5. Pressure and/or the body end connection may decrease these maximum temperatures.
7. Not available for Type 98HM.
X
T
0.78 0.50
F
D
F
L
0.91 0.83
0.88 0.77
0.92 0.85
K
m
• Differential Pressure Capability—Spring-loaded
PTFE packing and tapped connections permit pressure loading of Types 98LD and 98HD spring cases.
• Handwheels—Handwheels (standard on the Types 98LD and 98HD and optional on some sizes of the Types 98L and 98H) allow easy pressure setting changes.
• Sour Gas Service Capability—Optional materials are available for applications handling sour gases. These constructions comply with the recommendations of NACE International Standards MR0175 and MR0103.
Principle of Operation
Relief or backpressure valves respond to changes in upstream pressure. Pressure changes register under the diaphragm (see Figure 2) through a registration
hole in the valve body (through upstream sensing line connection for Type 98HM). When the pressure increases beyond the spring setting, the diaphragm pressure overcomes the spring compression. This
causes the valve plug to move away from the orice. The ow line through the valve is open and excess
pressure is vented. When upstream pressure drops back to normal, the valve resumes its closed position.
The chart in Figure 3 illustrates the operation of an NPS 1/2 (DN 15) body used in air service. As the
inlet pressure increases, initial ow occurs at the
bubble point of 10.5 psig (0,72 bar). Flow increases with further rises in the inlet pressure, reaching 500 SCFH (13,4 Nm3/h) at the relief pressure setting of 12 psig (0,83 bar). Greater capacities are obtained with higher build-ups over the relief pressure setting, as shown in the capacity tables.
When the inlet pressure decreases, ow decreases until
the valve reseals to reseat point of 9 psig (0,62 bar).
3
Bulletin 71.4:98
METAL DIAPHRAGMS
SPRING
REGISTRATION HOLE
ORIFICE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
A6925
GASKET
DIAPHRAGM
FOR TYPE 98H WITH TWO METAL DIAPHRAGMS
VALVE PLUG
COMP
O-RING SEAT
(ALSO TYPICAL OF 98HH AND 98L EXCEPT FOR
TYPE 98L, 1/4 NPT, 2 TO 7 PSI (0,14 TO 0,48 bar) RANGE)
SPRING
GASKET
TYPE 98L (1/4 NPT, 2 TO 7 PSI (0,14 TO 0,48 bar) RANGE)
WITH ONE METAL DIAPHRAGM
METAL DIAPHRAGMS
TYPE 98H (ALSO TYPICAL OF 98L AND 98HH)
HANDWHEEL
CONTROL SPRING
VALVE PLUG GUIDE
INLET PRESSURE
OUTLET PRESSURE
LOADING PRESSURE
M1005
Figure 2. 98 Series Operational Schematic
4
SPRING
FOR TYPE 98HD/LD/HHD WITH TWO METAL DIAPHRAGMS,
ASSEMBLE DIAPHRAGM GASKETS UNDER AND ABOVE
THE METAL DIAPHRAGMS AS SHOWN ABOVE
TYPE 98HD (ALSO TYPICAL OF 98LD AND 98HHD)
METAL DIAPHRAGMS
GASKET
M1155
TO UPSTREAM SENSING LINE
Type 98HM
SPRING
Bulletin 71.4:98
METAL DIAPHRAGMS
TO UPSTREAM SENSING LINE
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
M1155
TYPE 98HM
Figure 2. 98 Series Operational Schematic (continued)
Once the valve has resealed, leakage will not occur again until the bubble point pressure of 10.5 psig (0,72 bar) is reached.
Table 22 shows typical pressure differences between the relief pressure setting and the bubble point, and between the relief pressure setting and the reseat point. These differences are to be used in conjunction with the capacity tables to determine the total inlet pressure increase required to develop the tabulated
ows and to determine the actual inlet pressure
reductions required for reseat point.
Capacity Information
GASKET
FOR TYPE 98HM WITH TWO METAL DIAPHRAGMS,
ASSEMBLE DIAPHRAGM GASKETS UNDER AND ABOVE
THE METAL DIAPHRAGMS AS SHOWN ABOVE
Then, if capacity is desired in normal cubic meters per hour at 0°C and 1,01325 bar, multiply SFCH by 0.0168.
Typical relieving capacities in pounds per hour and kilogram per hour of saturated steam are shown in Tables 5, 10, and 15.
Tables 3, 4, 8, 9, 13, 14, 20, and 21 gives relieving capacities in U.S. gallons per minute and in liters per minute of water.
Sizing
Determine Flow Rates for units used as differential relief valves as follows:
Relieving capacities at selected pressures and outlet
pressure ows are given in SCFH (60°F and 14.7 psia)
of air in Tables 6, 7, 11, 12, 16, 17, 18, and 19. To determine the equivalent capacities for other gases, multiply the table capacities by the following appropriate
conversion factors: 1.29 for 0.6 specic gravity natural
gas, 0.808 for propane, 0.707 for butane, or 1.018 for
nitrogen. For gases of other specic gravities, divide by the square root of the appropriate specic gravity.
Air and Steam Service
When the Capacity Information section do not cover the actual service conditions, it will be necessary to
calculate the ow rate available from the relief valve.
Step 1.
From the Capacity Information section determine a
ow rate using the closest available data for setpoint
5
Bulletin 71.4:98
and build-up. With this information, calculate a ow coefcient using the following:
Equation 1:
Q
=
C
g
520
GT
P1aSIN
3417
)
C
∆P
DEG
P
)
1a
1
Cg = Calculated Flow coefcient
Q = Flow rate from tables (SCFH)
P
= Inlet pressure from table (set pressure and
1a
build-up) converted to absolute pressure
G = Specic gravity
T = Absolute temperature of gas at inlet degrees Rankine = °F + 460
P1 = Absolute inlet pressure, psia = psig + 14.7
C1 = 35
∆P = P1 - P2, psid
Calculate the Cg coefcient for the setting and build-up
nearest to the desired service conditions within the selected spring range. Then use this Cg to calculate
the approximate ow available for the actual setpoint
and build-up desired. Available Cg will vary based upon setpoint, differential pressure, build-up, and spring range.
Step 2.
Calculate the actual ow rate available using the coefcient from Step 1 and the actual inlet pressure
(setpoint plus build-up) and actual outlet pressure (if not atmospheric).
16 (1,1)
14 (0,97)
12 (0,83)
10.5 (0,72) 10 (0,69)
9 (0,62)
8 (0,55)
INLET PRESSURE, PSIG (bar)
6 (0,41)
A1309-1
Figure 3. Typical Bubble Point and Reseat Point Performance
BUBBLE
POINT
TIGHT SHUTOFF POINT
0
AIR FLOW, STANDARD CUBIC FEET PER HOUR (Nm3/h)
500 (13,4) 1000 (26,8) 1500 (40,2)
and
12 PSIG (0,83 bar) RELIEF SETTING 500 SCFH (13,4 Nm3/h) FLOW AT RELIEF SETTING NPS 1/2 (DN 15) TYPE 98L
INCREASING INLET PRESSUREand
DECREASING INLET PRESSURE
From Table 11, select NPS 3/4 or 1 (DN 20 or 25) body, red spring for 100 psi (6,9 bar) setpoint, and
10 psi (0,69 bar) build-up. The Type 98H will ow
13 000 SCFH (348 Nm3/h) air.
Calculate Cg for these table conditions using Equation 1:
P1 = 100 psig (6,9 bar) + 10 psig (0,69 bar) build-up = 110 psig or 124.7 psia (7,6 bar g or 8,6 bar a)
∆P = P1 - P2 = 110 psid (7,6 bar d)
Q = 13 000 SCFH (348 Nm3/h)
C1 = 35
Answer from Equation 1, Cg = 104*
Equation 2:
Q
SCFH
520
=
CgP1aSIN
GT
3417
)
C
∆P
DEG
P
)
1a
1
Example 1.
Service Conditions:
Setpoint, 115 psi (7,9 bar) Build-up allowed, 10 psi (0,69 bar) Outlet discharges to atmosphere Require 13 200 SCFH (354 Nm3/h)
air ow rate
6
*Since build-up relates to travel, this coefcient is
valid for all pressure settings on the spring used in the calculation whenever the build-up is 10 psi (0,69 bar).
Now, solve for actual ow, Q, from the original service
conditions using Equation 2:
P1 = 115 psig (7,9 bar) + 10 psig (0,69 bar) build-up = 125 psig or 139.7 psia (8,6 bar or 9,6 bar a)
P2 = 0, therefore P = P1 - P2 = 125 psig (8,6 bar) - 0 = 125 psid (8,6 bar d)
Cg = 104 (from above)
C1 = 35
Bulletin 71.4:98
Answer from Equation 2, Q = 14 500 SCFH (389 Nm3/h) rated capacity. Since this capacity is greater than the 13 200 SCFH (354 Nm3/h) required, the relief valve may be used or the calculation could be repeated to try for a smaller body size.
Example 2.
Service Conditions:
Setpoint, 165 psi (11,4 bar) Build-up allowed, 10 psi (0,69 bar) Outlet discharges into pressured system of 50 psi (3,4 bar) Require 3000 SCFH (80,4 Nm3/h) air ow rate
From Table 11, select NPS 3/4 or 1 (DN 20 or 25) body, blue spring. For 150 psi (10,3 bar) setpoint and
10 psi (0,69 bar) build-up, the Type 98H will ow
9000 SCFH (241 Nm3/h) air.
Calculate Cg for these table conditions using Equation 1:
P1 (inlet) = 150 psig (10,3 bar) + 10 psig (0,69 bar) build-up = 160 psig or
174.7 psia (11,0 bar g or 12,0 bar a)
∆P = P1 - P2 = 160 psig (11,0 bar) - 0 =
160 psid (11,0 bar d)
Q = 9000 SCFH (241 Nm3/h)
C
1
= 35
Answer from Equation 2, Q = 9500 SCFH (255 Nm3/h) rated capacity. Since this capacity is greater than the 3000 SCFH (80,4 Nm3/h) required, the relief valve may be used or the calculation could be repeated to try for a smaller body size.
Liquid Sizing for Liquids Other than Water
Step 1.
Determine Cv at build-up conditions of application.
Cv =
Q = Flow in GPM from capacity tables
∆P = Pressure drop in psi (setpoint and build-up)
Cv = Valve sizing coefcient
Q
∆P
Step 2.
To determine ow rate for liquids other than water or ow rate for differential relief service:
Q = Cv ∆P/G
G = Specic gravity of uid
Answer from Equation 1, Cg = 51.5*
*Since build-up relates to travel, this coefcient is
valid for all pressure settings on the spring used in the calculation whenever the build-up is 10 psi (0,69 bar).
Now, solve for actual ow, Q, from the original service
conditions using Equation 2:
P1 = 165 psig (11,4 bar) + 10 psig (0,69 bar) build-up = 175 psig or 189.7 psia (12,1 bar g or 13,1 bar a)
∆P = P1 - P2 = 170 psig (11,7 bar) - 50 psig
(3,4 bar) = 120 psid (8,3 bar d)
Cg = 51.5 (from above)
C1 = 35
Maximum Allowable Pressure Drop for Liquid Service
Pressure drops in excess of allowable will result in
choked ow and possible cavitation damage.
To determine maximum allowable pressure drop for water:
∆P(allow) = Km (P1)
∆P = Valve differential - PSI
K
m
P1 = Valve inlet pressure psig
To determine maximum allowable pressure drop for
uids other than water, see Fisher® Catalog 10.
= Valve recovery coefcient from table
7
Bulletin 71.4:98
Table 1. Trim Materials
ELASTOMER SEAT STANDARD OPTIONAL
Orice
O-ring retainer
Valve plug
Valve plug guide
Pusher post
Diaphragm retaining washer
Diaphragm
O-ring seat
METAL SEAT STANDARD OPTIONAL
Orice
Valve plug
Valve plug guide
Pusher post
Diaphragm
Diaphragm retaining washer
1. Available for Type 98HM only.
2. Two metal diaphragms will be used except only for Type 98L, 1/4 NPT, 2 to 7 psi (0,14 to 0,48 bar) range which uses only one metal diaphragm (see Figure 2 for assembly reference).
3. Two diaphragms will be used if elastomer diaphragm is Fluorocarbon (FKM)
Table 2. Spring Ranges for Relief or Differential Relief Pressures
416 Stainless steel 416 Stainless steel 416 Stainless steel 416 Stainless steel 416 Stainless steel 316 Stainless steel
Neoprene (CR)
Nitrile (NBR)
416 Stainless steel, hardened 416 Stainless steel, hardened
416 Stainless steel 416 Stainless steel
302 Stainless steel
(2)
Not used
316 Stainless steel 316 Stainless steel 316 Stainless steel 316 Stainless steel 316 Stainless steel 302 Stainless steel
Fluorocarbon (FKM)
PTFE protector available; 302 Stainless steel
(3)
or Ethyleneproplylene (EPDM);
(2)
Fluorocarbon (FKM), Ethyleneproplylene EPDM, Peruoroelastomer (FFKM)
316 Stainless steel, Hastelloy® C, Monel 316 Stainless steel, Hastelloy® C, Monel 316 Stainless steel, Hastelloy® C, Monel 316 Stainless steel, Hastelloy® C, Monel
Neoprene (CR), Fluorocarbon (FKM)
(3)
, PTFE protector available , Hastelloy® C, Monel
®
®
®
®
302 Stainless steel
(1)
®
BODY SIZES,
NPS (DN)
RELIEF SET PRESSURE RANGE
Type 98L or 98LD Type 98H, 98HD, or 98HM Type 98HH or 98HHD
(1)
, PSIG OR PSI (bar)
SPRING PART NUMBER SPRING COLOR
2 to 7 (0,14 to 0,48 bar) 15 to 35 (1,0 to 2,4 bar) - - - - 1E392527022 Yellow
6 to 14 (0,41 to 0,97 bar) 25 to 75 (1,7 to 5,2 bar) - - - - 1E392627012 Green
(2)
1/4
12 to 25 (0,83 to 1,7 bar) 70 to 140 (4,8 to 9,7 bar) - - - - 1E392727142 Red
20 to 38 (1,4 to 2,6 bar) 130 to 200 (9,0 to 13,8 bar) - - - - 1L346127142 Blue
- - - - - - - - 150 to 375 (10,3 to 25,9) 1N942227142 Light Gray
2 to 7 (0,14 to 0,48 bar) 15 to 35 (1,0 to 2,4 bar) - - - - 1E395627022 Yellow
6 to 14 (0,41 to 0,97 bar) 25 to 75 (1,7 to 5,2 bar) - - - - 1D7455T0012 Green
12 to 25 (0,83 to 1,7 bar) 70 to 140 (4,8 to 9,7 bar) - - - - 1E395727192 Red
1/2 (15)
20 to 38 (1,4 to 2,6 bar) 130 to 200 (9,0 to 13,8 bar) - - - - 1L380027142 Blue
- - - - 15 to 100
- - - - 100 to 275
(3)
(1,0 to 6,9 bar) - - - - 14B9943X012 Unpainted
(3)
(6,9 to 19,0 bar) - - - - 14B9942X022 Unpainted
- - - - - - - - 150 to 375 (10,3 to 25,9) 1N943427142 Light Gray
2 to 7 (0,14 to 0,48 bar) 15 to 35 (1,0 to 2,4 bar) - - - - 1E398927022 Yellow
6 to 14 (0,41 to 0,97 bar) 25 to 75 (1,7 to 5,2 bar) - - - - 1E399027142 Green
12 to 25 (0,83 to 1,7 bar) 70 to 140 (4,8 to 9,7 bar) - - - - 1E399127162 Red
3/4, 1
(20, 25)
20 to 38 (1,4 to 2,6 bar) 130 to 200 (9,0 to 13,8 bar) - - - - 1L380127082 Blue
- - - - 15 to 100
- - - - 100 to 275
(3)
(1,0 to 6,9 bar) - - - - 14B9944X022 Unpainted
(3)
(6,9 to 19,0 bar) - - - - 14B9945X022 Unpainted
- - - - - - - - 150 to 375 (10,3 to 25,9) 1N944127182 Black Stripe
- - - - 5 to 35 (0,34 to 2,4 bar) - - - - 1E792327092 Dark Gray
1-1/2, 2 (40, 50)
- - - - 20 to 65 (1,4 to 4,5 bar) - - - - 1E795327082 Light Blue
- - - - 50 to 100 (3,4 to 6,9 bar) - - - - 1E795427082 Light Gray
- - - - 80 to 170 (5,5 to 11,7 bar) - - - - 1P788827082 Black
1. All springs may be backed off to 0 psig (0 bar). However, highest capacities and best performances are obtained by using these springs in their recommended ranges. Psi rather than psig are used for differential relief constructions.
2. Not available for Type 98HM.
3. Only available for Type 98HM. Stainless steel construction.
8
Bulletin 71.4:98
Table 3. Water Relief Capacities in Gallons per Minute (l/min), Types 98L and 98LD with Elastomer Diaphragm
NOMINAL
BODY SIZES,
NPS (DN)
1/4
1/2 (15)
3/4, 1
(20, 25)
SPRING
Part Number
1E392527022 Yellow
1E392627012 Green
1E392727142 Red
1L346127142 Blue
1E395627022 Yellow
1D7455T0012 Green
1E395727192 Red
1L380027142 Blue
1E398927022 Yellow
1E399027142 Green
1E399127162 Red
1L380127082 Blue
Color Code
RELIEF
PRESSURE
SETTING,
PSIG (bar)
2
(0,14)
5
(0,34)
10
(0,69)
15
(1,0)
20
(1,4)
25
(1,7)
25
(1,7)
30
(2,1)
35
(2,4)
2
(0,14)
5
(0,34)
10
(0,69)
15
(1,0)
20
(1,4)
25
(1,7)
25
(1,7)
30
(2,1)
35
(2,4)
2
(0,14)
5
(0,34)
10
(0,69)
15
(1,0)
20
(1,4)
25
(1,7)
25
(1,7)
30
(2,1)
35
(2,4)
FLOW AT
RELIEF
SETTING,
GPM
(l/min)
0.7
(2,7)
0.7
(2,7)
2.2
(8,3)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
2.2
(8,3)
2.2
(8,3)
2.2
(8.3)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
2.2
(8,3)
2.2
(8,3)
2.2
(8.3)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
PRESSURE BUILD-UP OVER RELIEF SETTING, PSIG (bar)
2
(0,14)4(0,28)6(0,41)8(0,55)10(0,69)15(1,0)20(1,4)25(1,7)30(2,1)
2.1
(8,0)
2.9
(11,0)
3.5
(13,2)
3.1
(11,7)
3.3
(12,5)
3.5
(13,2)
3.4
(12,9)
3.8
(14,4)
4.2
(15,9)
5.2
(19,7)
(22,7)
6.7
(25,4)
4.5
(17,0)
(18,9)
5.5
(20,8)
4.2
(15,9)
4.5
(17,0)
4.7
(17,8)
15
(56,8)
15.5
(58,7)
16.5
(62,5)
14
(53,0)
16.5
(62,5)
17.5
(66,2)
10
(37,9)
11
(41,6)
19.5
(73,8)
6
5
2.6
(9,8)
3.3
(12,5)
4.5
(17,0)5(18,9)
4.3
(16,3)
4.8
(18,2)
5.3
(20,1)
4.7
(17,8)
5.2
(19,7)
5.6
(21,2)
7.5
(28,4)
8.2
(31,0)
8.5
(32,2)10(37,9)
6.7
(25,4)
7.7
(29,1)
8.2
(31,0)
7
(26,5)
7.5
(28,4)
8
(30,3)
18.5
(70,0)
19
(71,9)
21.5
(81,4)
21
(79,5)
24
(90,8)
25.5
(96,5)
20
(75,7)
24
(90,8)
30
(114)
3
(11,4)
3.7
(14,0)
5
(18,9)
5.7
(21,6)
6.1
(23,1)
5.5
(20,8)
6
(22,7)
6.5
(24,6)
8.5
(32,2)
9.2
(34,8)
9.2
(34,8)
10.5
(39,7)
11.5
(43,5)
9.7
(36,7)
10.2
(38,6)
10.7
(40,5)
20
(75,7)
21
(79,5)
24.5
(92,7)
25.5
(96,5)
28.5
(108)
30.5
(115)
25
(94,6)
30
(114)
34.5
(131)
3.4
(12,9)
4.1
(15,5)
5.3
(20,1)
5.5
(20,8)
6.1
(23,1)
6.5
(24,6)
6.1
(23,1)
6.7
(25,4)
7
(26,5)
9.5
(36,0)
10.2
(38,6)
11.5
(43,5)
11.2
(42,4)
12.5
(47,3)
13.2
(50,0)
12
(45,4)
12.5
(47,3)
13
(49,2)
22.5
(85,2)
23
(87,1)
26.5
(100)
28
(106)
30.5
(115)
33
(125)
29
(110)
33.5
(127)
36.5
(138)
3.8
(14,4)
4.5
(17,0)
5.5
(20,8)
6
(22,7)
6.3
(23,8)
6.7
(25,4)
6.6
(25,0)
7.2
(27,3)
7.4
(28,0)
10.2
(38,6)
11.2
(42,4)
12.5
(47,3)
12.6
(47,7)
13.7
(51,9)
14.5
(54,9)
13.5
(51,1)
14
(53,0)
14.7
(55,6)
24
(90,8)
24.5
(92,7)
27.5
(104)
30
(114)
32
(121)
34
(129)
32
(121)
35.5
(134)
38
(144)
4.5
(17,0)
5.2
(19,7)
5.9
(22,3)
6.4
(24,2)
6.7
(25,4)
7.1
(26,9)
7.2
(27,3)
7.6
(28,8)
8
(30,3)
12.1
(45,8)
12.9
(48,8)
14.2
(53,7)
15
(56,8)
16.2
(61,3)
16.5
(62,5)
16.2
(61,3)
16.7
(63,2)
17.5
(66,2)
28.6
(108)
28.9
(109)
29.5
(112)
32
(121)
34
(129)
36
(136)
36
(136)
38
(144)
40
(151)
5.2
(19,7)
5.8
(22,0)
6.5
(24,6)
6.9
(26,1)
7
(26,5)
7.5
(28,4)
7.6
(28,8)
8
(30,3)
8.4
(31,8)
13.8
(52,2)
14.5
(54,9)
15.6
(59,0)
16.2
(61,3)
17.7
(67,0)
18.2
(68,9)
18.2
(68,9)
18.7
(70,8)
19.5
(73,8)
32.5
(123)
33.5
(127)
32.3
(122)
34.6
(131)
36
(136)
38
(144)
38
(144)
40
(151)
42
(159)
5.7
(21,6)
6.4
(24,2)
7.0
(26,5)
7.4
(28,0)
7.4
(28,0)
7.9
(29,9)
8
(30,3)
8.4
(31,8)
8.7
(32,9)
15.3
(57,9)
15.8
(59,8)
16.8
(63,6)
17.3
(65,5)
18.8
(71,2)
19.5
(73,8)
19.5
(73,8)
20
(75,7)
21.5
(81,4)
36.0
(136)
36.7
(139)
34.9
(132)
36.9
(140)
38.2
(145)
40
(151)
40
(151)
42
(159)
44
(167)
6.2
(23,5)
6.9
(26,1)
7.5
(28,4)
7.8
(29,5)
7.8
(29,5)
8.3
(31,4)
8.4
(31,8)
8.5
(32,2)
9.2
(34,8)
16.6
(62,8)
17.1
(64,7)
18.0
(68,1)
18.4
(69,6)
19.9
(75,3)
20.4
(77,2)
20.5
(77,6)
21
(79,5)
21.2
(80,2)
39.2
(148)
39.6
(150)
37.3
(141)
39.2
(148)
40.2
(152)
42.0
(159)
42.0
(159)
44
(167)
51
(193)
9
Bulletin 71.4:98
Table 4. Water Relief Capacities in Gallons per Minute (l/min), Types 98L and 98LD with Metal Diaphragm
NOMINAL
BODY SIZES,
NPS (DN)
1/4
1/2 (15)
3/4, 1
(20, 25)
SPRING
Part Number
1E392527022 Yellow
1E392627012 Green
1E392727142 Red
1L346127142 Blue
1E395627022 Yellow
1D7455T0012 Green
1E395727192 Red
1L380027142 Blue
1E398927022 Yellow
1E399027142 Green
1E399127162 Red
1L380127082 Blue
Color Code
RELIEF
PRESSURE
SETTING,
PSIG (bar)
2
(0,14)
5
(0,34)
10
(0,69)
15
(1,0)
20
(1,4)
25
(1,7)
25
(1,7)
30
(2,1)
35
(2,4)
2
(0,14)
5
(0,34)
10
(0,69)
15
(1,0)
20
(1,4)
25
(1,7)
25
(1,7)
30
(2,1)
35
(2,4)
2
(0,14)
5
(0,34)
10
(0,69)
15
(1,0)
20
(1,4)
25
(1,7)
25
(1,7)
30
(2,1)
35
(2,4)
FLOW AT
RELIEF
SETTING,
GPM
(l/min)
0.7
(2,7)
0.7
(2,7)
2.2
(8,3)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
2.2
(8,3)
2.2
(8,3)
2.2
(8.3)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
2.2
(8,3)
2.2
(8,3)
2.2
(8.3)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
1.8
(6,8)
PRESSURE BUILD-UP OVER RELIEF SETTING, PSIG (bar)
2
(0,14)4(0,28)6(0,41)8(0,55)10(0,69)15(1,0)20(1,4)25(1,7)30(2,1)
1.2
(4,5)
1.3
(4,9)
3.4
(12,9)4 (15,1)
(11,4)
3.1
(11,7)
3.3
(12,5)
2.6
(9,8)
3.1
(11,7)
3.2
(12,1)
3.7
(14,0)
4.7
(17,8)
3.8
(14,4)
4.2
(15,9)
4.7
(17,8)
(18,9)
3.5
(13,2)
(15,1)
4.5
(17,0)
13
(49,2)
14.7
(55,6)
11.5
(43,5)
(18,9)
5.2
(19,7)
5.5
(20,8)
2.5
(9,5)
(11,4)
5.2
(19,7)
1.8
(6,8)
2.1
(8,0)
3
3.9
(14,8)
(15,1)
4.3
(16,3)
3.7
(14,0)
4.1
(15,5)
4.4
(16,7)
(22,7)
6.2
(23,5)
5.5
(20,8)
6.2
(23,5)
(26,5)
5
7.5
(28,4)
5.7
(21,6)
4
6.5
(24,6)
7.2
(27,3)
16.5
(62,5)
18.2
(68,9)
17.5
(66,2)
5
3
14
(53,0)
15
(56,8)
18
(68,1)
7.5
(28,4)
(34,1)
11.5
(43,5)
4
6
7
9
2.5
(9,5)
3.0
(11,4)
4.5
(17,0)
4.5
(17,0)
4.6
(17,4)
5.1
(19,3)
4.5
(17,0)
4.9
(18,5)
5.3
(20,1)
7.2
(27,3)
(30,3)
7.5
(28,4)9 (34,1)
7.5
(28,4)
8.5
(32,2)
9.2
(34,8)
7.5
(28,4)
8.5
(32,2)
9.5
(36,0)
18.5
(70,0)
20
(75,7)
20.2
(76,5)
18.5
(70,0)
20
(75,7)
23.5
(88,9)
12.5
(47,3)
14
(53,0)
16.5
(62,5)
8
3.0
(11,4)
3.5
(13,2)
4.8
(18,2)
5
(18,9)
5.2
(19,7)
5.7
(21,6)
5
(18,9)
5.5
(20,8)
6
(22,7)
8.2
(31,0)
9.2
(34,8)
8.7
(32,9)
9.7
(36,7)
10.7
(40,5)
9.2
(34,8)
10.1
(38,2)
11
(41,6)
19.5
(73,8)
21
(79,5)
20.5
(77,6)24 (90,8)
21
(79,5)
23.5
(88,9)
26.5
(100)
17
(64,3)
18
(68,1)
21.5
(81,4)
3.3
(12,5)
3.8
(14,4)
5.1
(19,3)
5.4
(20,4)
5.5
(20,8)
6.1
(23,1)
5.5
(20,8)
6
(22,7)
6.5
(24,6)
9.2
(34,8)
10.2
(38,6)
10.5
(39,7)
9.7
(36,7)
10.7
(40,5)
12
(45,4)
10.2
(38,6)
11.2
(42,4)
12.2
(46,2)
20.5
(77,6)
22
(83,3)
23.5
(88,9)
26
(98,4)
29
(110)
20
(75,7)
22
(83,3)
25
(94,6)
3.9
(14,8)
4.4
(16,7)
5.5
(20,8)
5.8
(22,0)
6.3
(23,8)
6.7
(25,4)
6.5
(24,6)
7
(26,5)
7.5
(28,4)
11.0
(41,6)
11.8
(44,7)
13
(49,2)
11.5
(43,5)
12.7
(48,1)
14
(53,0)
12.7
(48,1)
14
(53,0)
15.5
(58,7)
24.4
(93,4)
25.4
(96,1)
26.5
(100)
27.5
(104)
30
(114)
32
(121)
26
(98,4)
27.5
(104)
31.5
(119)
4.5
(17,0)
4.9
(18,5)
6.0
(22,7)
6.3
(23,8)
6.7
(25,4)
7.1
(26,9)
7.1
(26,9)
7.5
(28,4)
7.9
(29,9)
12.5
(47,3)
13.2
(50,0)
14.2
(53,7)
12.4
(46,9)
14
(53,0)
15
(56,8)
14.7
(55,6)
16
(60,6)
17.2
(65,1)
27.8
(105)
28.4
(107)
29.0
(110)
29.7
(112)
31.5
(119)
33.5
(127)
30.5
(115)
32
(121)
36
(136)
4.9
(18,5)
5.4
(20,4)
6.5
(24,6)
6.7
(25,4)
7.1
(26,9)
7.5
(28,4)
7.5
(28,4)
7.9
(29,9)
8.3
(31,4)
13.8
(52,2)
14.4
(54,5)
15.4
(58,3)
13.3
(50,3)
14.8
(56,0)
16.2
(61,3)
16.2
(61,3)
17.2
(65,1)
18.2
(68,9)
30.8
(117)
31.1
(118)
31.4
(119)
31.7
(120)
33.4
(126)
35.5
(134)
34.5
(131)
37.5
(142)
39.5
(150)
5.4
(20,4)
5.8
(22,0)
7.0
(26,5)
7.1
(26,9)
7.5
(28,4)
7.9
(29,9)
7.9
(29,9)
8.3
(31,4)
8.7
(32,9)
15.0
(56,8)
15.6
(59,0)
16.4
(62,1)
14.1
(53,4)
15.6
(59,0)
17.0
(64,3)
17.0
(64,3)
18.2
(68,9)
19.2
(72,7)
33.5
(127)
33.6
(127)
33.5
(127)
33.7
(128)
35.2
(133)
37.2
(141)
37.2
(141)
39.5
(150)
42
(159)
10
Bulletin 71.4:98
Table 5. Steam Relief Capacities in Pounds per Hour (kg/h), Types 98L and 98LD with Metal Diaphragm Only
NOMINAL
BODY SIZES,
NPS (DN)
1/4
1/2 (15)
3/4, 1
(20, 25)
SPRING
Part Number
1E392527022 Yellow
1E392627012 Green
1E392727142 Red
1L346127142 Blue
1E395627022 Yellow
1D7455T0012 Green
1E395727192 Red
1L380027142 Blue
1E398927022 Yellow
1E399027142 Green
1E399127162 Red
1L380127082 Blue
Color Code
RELIEF
PRESSURE
SETTING,
PSIG (bar)
2
(0,14)
5
(0,34)
10
(0,69)
15
(1,0)
20
(1,4)
25
(1,7)
25
(1,7)
30
(2,1)
35
(2,4)
2
(0,14)
5
(0,34)
10
(0,69)
15
(1,0)
20
(1,4)
25
(1,7)
25
(1,7)
30
(2,1)
35
(2,4)
2
(0,14)
5
(0,34)
10
(0,69)
15
(1,0)
20
(1,4)
25
(1,7)
25
(1,7)
30
(2,1)
35
(2,4)
FLOW AT
RELIEF
SETTING,
POUNDS/
HOUR
(kg/h)
7.5
(3,4)
7.5
(3,4)
25
(11,3)39 (17,7)50 (22,7)54(24,5)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)77 (34,9)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
25
(11,3)
2
(0,14)4(0,28)6(0,41)8(0,55)10(0,69)15(1,0)20(1,4)25(1,7)30(2,1)
18
(8,2)
18
(8,2)
36
(16,3)
39
(17,7)
41
(18,6)
36
(16,3)
39
(17,7)
41
(18,6)
59
(26,8)
73
(33,1)
59
(26,8)
64
(29,0)
68
(30,8)
50
(22,7)
52
(23,6)
55
(24,9)
122
(55,3)
127
(57,6)
136
(61,7)
100
(45,4)
127
(57,6)
136
(61,7)
91
(41,3)
118
(53,5)
127
(57,6)
PRESSURE BUILD-UP OVER RELIEF SETTING, PSIG (bar)
30
(13,6)
33
(15,0)
50
(22,7)
52
(23,6)
54
(24,5)
54
(24,5)
59
(26,8)
61
(27,7)
86
(39,0)
95
(43,1)
105
(47,6)
95
(43,1)
100
(45,4)
109
(49,4)
77
(34,9)
82
(37,2)
86
(39,0)
177
(80,3)
182
(82,6)
200
(90,7)
173
(78,5)
210
(95,3)
236
(107)
164
(74,4)
190
(86,2)
220
(99,8)
41
(18,6)
46
(20,9)
54
(24,5)
59
(26,8)
64
(29,0)
64
(29,0)
66
(29,9)
68
(30,8)
100
(45,4)
114
(51,7)
122
(55,3)
122
(55,3)
127
(57,6)
136
(61,7)
100
(45,4)
109
(49,4)
114
(51,7)
210
(95,3)
218
(98,9)
240
(109)
228
(103)
264
(120)
280
(127)
228
(103)
254
(115)
280
(127)
48
(21,8)
54
(24,5)
59
(26,8)
64
(29,0)
68
(30,8)
73
(33,1)
73
(33,1)
77
(34,9)
82
(37,2)
114
(51,7)
127
(57,6)
136
(61,7)
141
(64,0)
145
(65,8)
164
(74,4)
123
(55,8)
136
(61,7)
145
(65,8)
236
(107)
246
(112)
280
(127)
272
(123)
310
(141)
328
(149)
272
(123)
318
(144)
346
(157)
54
(24,5)
60
(27,2)
68
(30,8)86 (39,0)
73
(33,1)
77
(34,9)
82
(37,2)
86
(39,0)
91
(41,3)
95
(43,1)
127
(57,6)
136
(61,7)
145
(65,8)
155
(70,3)
168
(76,2)
182
(82,6)
141
(64,0)
159
(72,1)
168
(76,2)
264
(120)
272
(123)
310
(141)
300
(136)
246
(112)
364
(165)
320
(145)
354
(161)
390
(177)
64
(29,0)
70.1
(31,8)
91
(41,3)
95
(43,1)
105
(47,6)
109
(49,4)
113
(51,3)
123
(55,8)
151
(68,5)
159
(72,1)
173
(78,5)
187
(84,8)
204
(92,5)
228
(103)
190
(86,2)
210
(95,3)
220
(99,8)
313
(142)
318
(144)
370
(168)
380
(172)
420
(191)
455
(206)
420
(191)
455
(206)
500
(227)
74.1
(33,6)
80.2
(36,4)
96.8
(43,9)
101
(45,8)
105
(47,6)
123
(55,8)
123
(55,8)
127
(57,6)
140
(63,5)
175
(79,4)
182
(82,6)
195
(88,5)
208
(94,3)
227
(103)
260
(118)
232
(105)
250
(113)
264
(120)
363
(165)
364
(165)
417
(189)
423
(192)
455
(206)
500
(227)
500
(227)
545
(247)
590
(268)
84.2
(33,2)
90.3
(41,0)
108
(49,0)
112
(50,8)
115
(52,2)
132
(59,9)
136
(61,7)
140
(63,5)
150
(68,0)
198
(89,8)
205
(93,0)
216
(98,0)
229
(104)
248
(112)
286
(130)
264
(120)
282
(128)
295
(134)
412
(187)
415
(188)
463
(210)
464
(210)
497
(225)
545
(247)
545
(247)
590
(268)
640
(290)
94.3
(42,8)
100
(45,4)
119
(54,0)
122
(55,3)
124
(56,2)
142
(64,4)
147
(66,7)
155
(70,3)
159
(72,1)
222
(101)
228
(103)
238
(108)
250
(113)
269
(122)
308
(140)
284
(129)
310
(141)
317
(144)
462
(210)
465
(211)
509
(231)
510
(231)
538
(244)
587
(266)
587
(266)
680
(308)
730
(331)
11
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