Emerson Y692 Data Sheet

Bulletin 74.1:Y692

November 2014

Type Y692 Gas Blanketing Regulator System

W5930-1

Figure 1. Type Y692 Low-Pressure Gas Blanketing Regulator

Introduction

An Accu-Pressure™ Gas Blanketing Regulator System
reduces a high-pressure gas, such as Nitrogen, to
maintain a protective environment above any liquid
stored in a tank or vessel when the liquid is being
pumped out. Also when the vessel is suddenly cooled,
causing vapors inside the vessel to contract, the
regulator system replaces the volume of contracting
vapors with a volume of blanketing gas to prevent
the internal vessel pressure from decreasing. In both
cases, a slight positive vessel pressure prevents
outside air, moisture and other contaminants from
entering the vessel and the possible collapse of the
vessel walls.

The Type Y692 (Figure 1) is a direct-operated
regulator used for accurate pressure control on
very low-pressure blanketing systems. Downstream
pressure is sensed through a pitot tube installed in
the lower casing of the regulator for units with internal
pressure registration or through a downstream control
line for units with external pressure registration.
The Type Y692 is available in NPS 1-1/2 and 2 /
DN 40 and 50 body sizes.

Features

• Ease of Inspection and Maintenance—The union

nut connection between the body and actuator

permits access to the disk and orice by only

removing the diaphragm casing assembly without
removing the body from the line.

• Accuracy of Control—Large diaphragm areas

provide more precise control even at low-pressure
settings and the pitot tube also creates a dynamic
boost that helps provide greater capacity.

• Speed of Response—The downstream pressure is

sensed directly by the diaphragm through the pitot
tube providing quick response.

• Ease of Installation—The Type Y692 is easy

to install in the pipeline because no additional
connections are required.

www.fisherregulators.com

D102032X012

Bulletin 74.1:Y692

Specications

This section lists the specications of theType Y692 Gas Blanketing Regulator System. Factory specication,
such as spring range and orice size are stamped on the nameplate fastened on the regulator at the factory.

AvailableCongurations

Direct-operated pressure reducing regulator with

external or internal pressure registration with
seven outlet (control) pressure ranges from
1 in. w.c. to 7 psig / 2 mbar to 0.48 bar. Available in
NPS 1-1/2 and 2 / DN 40 and 50 body sizes.

Body Sizes and End Connection Styles

(1)

Cast Iron: NPS 1-1/2 / DN 40, NPT,

NPS 2 / DN 50, NPT or CL125 FF

Steel: NPS 1-1/2 or 2 / DN 40 or 50, NPT, SWE,

CL150 RF, CL300 RF or PN 16/25/40

Stainless steel: NPS 1-1/2 or 2 / DN 40 or 50,

NPT, CL150 RF, CL300 RF or PN 16/25/40

Maximum Inlet Pressure

(2)

150 psig / 10.3 bar

Maximum Outlet (Casing) Pressure

(2)

15 psig / 1.0 bar

Maximum Operating Outlet (Control) Pressure to
Avoid Internal Part Damage

(2)

3 psig / 0.21 bar above outlet (control)

pressure setting

Control Pressure Ranges

(2)

See Table 1

Flow Capacities

See Table 5

ReliefSizingCoefcients

See Table 6

OriceSize

See Table 6

Pressure Registration
Internal (standard) or External

Spring Case Connection

1/4 NPT

Temperature Capabilities

(2)

Nitrile (NBR):

-20 to 180°F / -29 to 82°C

Fluorocarbon (FKM):

0 to 300°F / -18 to 149°C

 Peruoroelastomer(FFKM):

-20 to 300°F / -29 to 149°C

EthylenePropylene (EPDM):

-20 to 275°F / -29 to 135°C

IECSizingCoefcients

XT: 0.775
FD: 0.50
FL: 0.89

Approximate Weights
Cast Iron Body: 45 lbs / 20 kg
Steel/Stainless steel Body: 57 lbs / 26 kg

Canadian Registration Number (CRN)

Approved

PED (Pressure Equipment Directive) Category

The Type Y692 may be used as a safety

accessory with pressure equipment in the
PED 97/23/EC Category I.

Construction Materials
Body, Union Nut, Spring Case and Lower
Casing Assembly: Cast iron, WCC steel,

CF8M Stainless steel

Control Spring, Control Spring Seat, Split Ring

and Diaphragm Plate: Plated steel
Diaphragm: Nitrile (NBR) (standard),

Fluorocarbon (FKM), Ethylenepropylene (EPDM),
Silicone (VMQ)

O-rings: Nitrile (NBR), Fluorocarbon (FKM),

Peruoroelastomer (FFKM),

Ethylenepropylene (EPDM)

Orice,PusherPost,PusherPostConnector,

Lever Assembly, Stem and Pitot Tube:
Stainless steel
Gasket: Composition

Disk Assembly: Nitrile (NBR) and Stainless steel,
Fluorocarbon (FKM) and Stainless steel,
Polytetrauoroethylene (PTFE) and Stainless steel
or Ethylenepropylene (EPDM) and Stainless steel

1. Fabricated by using slip-on anges and socket welding nipples into body.

2. The pressure/temperature limits in this Bulletin and any applicable standard limitation should not be exceeded.

2

Table 1. Control Pressure Ranges

CONTROL PRESSURE RANGE WITH

CASE BARREL POINTED DOWN

(2)(3)

(2)(4)

Light Spring

Assembly

1 to 3 in. w.c. / 2 to 7 mbar

3 to 11 in. w.c. / 7 to 27 mbar

6.5 in. w.c. to 1.2 psig / 16 mbar to 83 mbar

0.7 to 2 psig / 48 mbar to 0.14 bar
1 to 3.2 psig / 69 mbar to 0.22 bar

Heavy spring

Assembly

1. Install with spring case pointing down to achieve low setpoints in these spring ranges.

2. Do not use Fluorocarbon (FKM) diaphragm with these springs at diaphragm temperature lower than 60°F / 16°C.

3. Installation with spring case pointing up will change outlet (control) pressure range to 3 to 5 in. w.c. / 7 to 12 mbar.

4. Installation with spring case pointing up will change outlet (control) pressure range to 5.75 to 14 in. w.c. / 14 to 35 mbar.

5. Installation with spring case pointing up will change outlet (control) pressure range to 7.5 in. w.c. to 1.3 psig / 19 to 90 mbar.

2 to 5.5 psig / 0.14 to 0.38 bar
4 to 10 psig / 0.28 to 0.69 bar

CONTROL SPRING

COLOR CODE

(5)

Silver with green stripe

Brown

Iridite

Green

Blue

Orange

Silver

CONTROL SPRING

PART NUMBER

1D892527022
0B019727052
0B019427052
0B019627032
0A081127202

0Y066427022
1H802427032

Bulletin 74.1:Y692

SPRING WIRE

DIAMETER

In. mm In. mm

0.109

0.148

0.187

0.225

0.250

0.363

0.406

2.77

3.76

4.75

5.71

6.35

9.22

10.3

SPRING FREE

LENGTH

6.12

6.00

6.00

6.00

6.00

6.00

6.00

155
152
152
152
152

152
152

Table 2. Flow Rate Conversion

(1)

MULTIPLY MAXIMUM PUMP RATE OUT BY TO OBTAIN

U.S. GPM
U.S. GPH

m3/hr

Barrels/hr

Barrels/day

1. Gas ow of blanketing gas to replace liquid pumped out.

8.021

0.1337

1.01

5.615

0.2340

SCFH
SCFH
Nm3/H

SCFH
SCFH

Table 3. Conversion Factors (for converting Nitrogen ow rates to other gas ow rates)

BLANKET GAS SPECIFIC GRAVITY CORRECTION FACTOR

Natural Gas 0.60 1.270

Air 1.00 0.985

Dry CO

2

Correction Factor = 0.985

1.52 0.797

SG

Table 4. Gas Flow Required for Thermal Heating (Outbreathing) or Cooling (Inbreathing) per API 2000 (Interpolate for Intermediate size)

VESSEL CAPACITY AIR FLOW RATE REQUIRED

Barrel Gallon Liter SCFH Nm3/h

60
100
500

1000
2000

3000
4000

5000
10,000
15,000

20,000
25,000
30,000
35,000
40,000

45,000
50,000
60,000
70,000
80,000

90,000

100,000
120,000
140,000
160,000

180,000 7,560,000 28,616,000 90,000 2412

2500

4200
21,000
42,000
84,000

126,000
168,000
210,000
420,000
630,000

840,000
1,050,000
1,260,000
1,470,000
1,680,000

1,890,000
2,100,000
2,520,000
2,940,000
3,360,000

3,780,000
4,200,000
5,040,000
5,880,000
6,720,000

9500
16,000
79,500

159,000
318,000

477,000
636,000

795,000
1,590,000
2,385,000

3,180,000
3,975,000
4,769,000
5,564,000
6,359,000

7,154,000
7,949,000
9,539,000

11,129,000
12,718,000

14,308,000
15,898,000
19,078,000
22,437,000
25,437,000

60
100
500

1000
2000

3000
4000

5000
10,000
15,000

20,000
24,000
28,000
31,000
34,000

37,000
40,000
44,000
48,000
52,000

56,000
60,000
68,000
75,000
82,000

1.6

2.7

1.3

26.8

53.6

80.4
107
134
268
402

536
643
750
831
911

992

1072
1179
1286
1394

1501
1608
1822
2010
2198

3

Bulletin 74.1:Y692

Type Y692

July 2007

Type Y692

Type Y692

Type Y692

VENT

BLOCK

VALV E

SUPPLY

PRESSURE

GAS BLANKETING PRESSURE

TYPE Y692 WITH INTERNAL REGISTRATION

VALV E

LIQUID

BLOCK

VALV E

VENT

VALV E

VENT

POINTED

DOWNWARD

A6340

INLET PRESSURE

CONTROL PRESSURE (OUTLET PRESSURE)

ATMOSPHERIC PRESSURE

VENT

BLOCK

VALV E

SUPPLY

PRESSURE

VALV E

VENT

VALV E

BLOCK

VALV E

GAS BLANKETING PRESSURE

LIQUID

TYPE Y692 WITH EXTERNAL REGISTRATION

VENT

POINTED

DOWNWARD

Figure 2. Type Y692 Operational Schematics

4

Bulletin 74.1:Y692

Principle of Operation

The Type Y692 Gas Blanketing Regulator reduces a
high-pressure gas to maintain a positive low-pressure
of blanket gas over a stored liquid when the liquid
is being pumped out of the vessel (see Figure 2).
Also when the vessel (or tank) is suddenly cooled,
causing vapors to contract, the regulator replaces
the volume of contracting vapors with a volume of
blanketing gas to prevent the internal vessel pressure
from decreasing. In both cases, a positive vessel
pressure prevents outside air from entering the vessel
and reduces the possibility of atmospheric pressure
collapsing the vessel.

Gas blanketing regulators respond to a slight decrease
in internal vessel pressure by throttling open to

increase the ow rate of gas into the vessel. When the

vessel’s liquid level has been lowered to the desired
point and the vapor pressure re-established, the
regulator throttles closed.

When the liquid level drops and vessel pressure
decreases below the setting of the control spring,
the spring force on the diaphragm opens the disk

assembly to supply the required ow of gas to the
vessel. When vessel pressure has been satised,

control pressure tends to increase slightly, acting on
the diaphragm. When the control (vessel) pressure
exceeds the control spring setting, the diaphragm
moves to close the disk assembly.

The Type Y692 Gas Blanketing Regulator provides
a constant set pressure for accurate gas blanketing.
When vessel pressure decreases below the control
spring setpoint, the force of the spring moves the disk

away from the orice allowing gas to ow into the

vessel. As the vessel pressure increases, the increase
is sensed by the diaphragm through the pitot tube or
control line. This movement of the diaphragm causes

the disk to move toward the orice, decreasing the
ow of blanketing gas. When the vessel pressure

reaches the system setpoint, the disk will seat against

the orice shutting off the ow of gas.

Installation

Install the Type Y692 regulator with the spring case
barrel pointed down. This will assure that the lowest
set pressure shown in Table 1 is achieved. Flow

through the regulator body is indicated by the ow

arrow cast on the body. If a block valve is required,

install a full ow valve between the regulator and the

blanketed vessel.

Sizing Tank Blanketing Systems

When sizing a gas blanketing regulator system for a
low pressure blanketing application, you must consider
the replacement of blanketing gas required for the
liquid loss during pump out of the vessel and also
the condensation/contraction of vessel vapors during
atmospheric thermal cooling.

Direct Displacement

The direct displacement method should be used
with extreme caution. The direct displacement
method determines the amount of blanketing gas
required to replace liquid pumped out of the tank.

Direct displacement does not allow for uctuating

temperature or other factors that may affect pressure
in the vapor space. This method is typically applied
to tanks operating at constant temperature and

containing non-ammable, non-volatile products.

Q

where,

Q

= Required Flow Rate

total

Q

= Required Flow Rate to replace pumped out

pump

liquid from Table 1

total

= Q

pump

5

Bulletin 74.1:Y692

API 2000

The American Petroleum Institute Standard 2000
(API 2000) sizing method accounts for liquid pump-out
as well as contraction of tank vapors due to cooling.
When using API methods:

Q

total

= Q

pump

+ Q

thermal

where,

Q

= Required Flow Rate

total

Q

= Required Flow Rate to replace pumped out

pump

liquid from Table 1

Q

= Required Flow Rate due to thermal cooling.

thermal

See Thermal Equations 1 to 4 below or
Table 2.

Thermal Equations

For tanks up to 840,000 gallons / 3179 m3 capacity,
use one of the following equations:

Equation 1:

Q

[SCFH Air] = V

thermal

Equation 2:

Q

[SCFH Nitrogen] = V

thermal

Equation 3:

Q

[Nm3/h Air] = V

therma

l

Equation 1:

Q

[Nm3/h Nitrogen] = V

thermal

where,

For Equations 1 and 2: V
For Equations 3 and 4: V

tank

tank

For tanks greater than 840,000 gallons / 3179 m3
capacity: See Table 2.

Depending on the method, there can be a signicant

difference in the calculated required capacity. No
matter which method is used, the tank must be
equipped with supplemental venting to protect the

x 0.0238

tank

x 0.0238 x 1.015

tank

x 0.169

tank

x 0.169 x 1.015

tank

= tank volume, gallons
= tank volume, m

3

tank, product and personnel in cases of equipment

failure,reexposureorotherconditionsthatcould

cause the tank pressure or vacuum to exceed
operating limits.

Sizing can be done by following these steps:

1. Determine the gas ow rate required to replace the

liquid being pumped out (see Table 2).

2. Using the established procedures from the
American Petroleum Institute Standard 2000

(API 2000), determine the gas ow rate due to

“inbreathing” caused by atmospheric thermal
cooling (see Table 4).

3. Add the requirements of 1 and 2 and select the
regulator size, based on total capacity required from
Table 6.

Sample sizing problem for blanketing applications:

Service Conditions:

Vessel Capacity . . . . . . . . . 42,000 gallons / 159,000 L

Pump In/Out Capacity . . 150 gallons/minute / 570 L/m

Inlet Pressure Source . . . . . 20 psig / 1.4 bar Nitrogen

Desired Blanket Setpoint . . . . . . . . 1 in. w.c. / 2 mbar

Sizing and Selection Methodology:

1. From Table 2 the desired air ow rate due to pump

out equals 150 GPM x 8.021 = 1203 SCFH /

32.2 Nm3/h air.

2. From Table 4, the required air ow due to thermal

cooling = 1000 SCFH / 26.8 Nm3/h air.

3. Total ow required for pump out and thermal

cooling is 1203 + 1000 = 2203 SCFH /

59.0 Nm3/h air.

4. Convert to nitrogen by dividing the total air ow by

the square root of the specic gravity of nitrogen:

2203 ÷ 0.97 = 2248 SCFH / 60.2 Nm3/h nitrogen
(See Table 3 for the conversion).

5. From Table 5, a Type Y692 in either an NPS 1-1/2

and 2 / DN 40 and 50 body sizes and a 3/8 in. /

9.5 mm orice will ow 3620 SCFH / 97.0 Nm3/h

nitrogen at 20 psig / 1.4 bar inlet pressure. This
satises the required ow of 2248 SCFH /

60.2 Nm3/h nitrogen.

6

Bulletin 74.1:Y692

Capacity Information

Table 5 gives the typical regulating capacities at
selected inlet pressures and outlet (control) pressure
settings. Flows are in SCFH (60°F and 14.7 psia)

of 0.97 specic gravity nitrogen. For gases of other
specic gravities, multiply the given capacity of nitrogen

by 0.985 and divide the given capacity by the square

root of the appropriate specic gravity of the gas

required. Then, if capacity is desired in normal cubic
meters per hour at 0°C and 1.01325 bar, multiply
SCFH by 0.0268.

To determine wide-open ow capacities for relief

sizing, use the following formula:

520 3417

Q = CgP1SIN DEG

GT C

where,

Cg = gas sizing coefcient from Table 6
C1 = Cg /Cv or 35 from Table 6

G = gas specic gravity (air = 1.0)

P

= inlet pressure, psia (add 14.7 psi to gauge inlet

1abs

pressure to obtain absolute inlet pressure)

Q = ow rate, SCFH

T = absolute temperature in °Rankine of gas at inlet

P

P

1

1

Ordering Information

When ordering, specify:

1. Type of gas being controlled (nitrogen fuel gas,

etc.); list any factors such as impurities in the gas
that may affect compatibility of the gas with the
regulator trim parts.

2. Specic gravity of the gas

3. Temperature of the gas

4. Range of owing inlet pressures to regulator

5. Flow rates

a) Minimum controlled ow

b) Normal ow

c) Maximum ow

6. Line size and end connection size of adjacent piping.

Adjacent downstream piping must be the same
size as the regulator body or longer.

7. Vessel size

7

Bulletin 74.1:Y692

Table 5. Blanketing Regulating Capacities in SCFH / Nm3/h of 0.97 Specic Gravity Nitrogen

OUTLET PRESSURE

BODY SIZE

NPS 1-1/2 /

DN 40

1. Spring ranges based on regulator installation with the spring case pointed down.

- Light shaded areas show where indicated droop would be exceeded regardless of capacity.

- Dark shaded areas show where maximum operating inlet pressure for a given orice size is exceeded.

(1)

RANGE

, ACCURACY

AND SPRING COLOR

1 to 3 in. w.c. /

2 to 7 mbar

-1 to 2 in. w.c. /

-2 to 5 mbar

Brown

3 to 11 in. w.c. /

7 to 27 mbar

-1 to 2 in. w.c. /

-2 to 5 mbar

Iridite

6.5 in. w.c to 1.2 psig /

16 to 83 mbar, Green or

0.7 to 2 psig /

48 mbar to 0.14 bar, Blue

0.2 psig / 14 mbar
1 to 3.2 psig /

69 mbar to 0.22 bar

0.6 psig / 41 mbar

Orange

2 to 5.5 psig /

0.14 to 0.38 bar

0.5 psig / 34 mbar

Silver with green stripe

2 to 5.5 psig /

0.14 to 0.38 bar

1 psig / 69 mbar

Silver with green stripe

4 to 10 psig /

0.28 to 0.69 bar

1 psig / 69 mbar

Silver

4 to 10 psig /

0.28 to 0.69 bar

2 psig / 0.14 bar

Silver

OUTLET

PRESSURE

SETTING

1 in. w.c. /

2 mbar

3 in. w.c. /

7 mba

7 in. w.c. /

17 mbar

1.5 psig /

0.10 bar

3 psig /

0.21 bar

5 psig /

0.34 bar

5 psig /

0.34 bar

10 psig /

0.69 bar

10 psig /

0.69 bar

INLET

PRESSURE

psig bar SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h

2

5
10
20
40
60
80

100
125
150

2

5
10
20
40

r

60
80

100
125
150

0.5
1
2
5

13

25
50
100
150

2

6
14
30
50

150

3

7
14
30
50

150

10
15
20
35
60
75

100

10
15
20
35
60
75

100

15
20
25
40
60
75

100

15
20
25
40
60
75

100

1/4 / 6.4 3/8 / 9.5 1/2 / 13 3/4 / 19 1 / 25 1-3/16 / 30

0.14

360

680
1030
1580
2500
3410
4320
4510
4510
4510

360

680
1030
1580
2500
3410
4320
4510
4510
4510

330

470

770
1270
1850
3040
5370
6100

590

789

950
1420
2210
2760
3550

950
1180
1380
1970
3160
4100
5130

708

944
1102
1810
2361
2754
3541

1023
1259
1574
2282
2990
4013
5115

9.7

18.2

27.6

42.3

67.0

91.4
116
121
121
121

9.7

18.2

27.6

42.3

67.0

91.4
116
121
121
121

8.8

12.6

20.6

34.0

49.6

81.5
144
163

15.8

21.1

25.5

38.1

59.2

74.0

95.1

25.5

31.6

37.0

52.8

84.7
110
137

19.0

25.3

29.5

48.5

63.3

73.8

94.9

27.4

33.7

42.2

61.2

80.1
108
137

0.34

0.69

1.4

2.8

4.1

5.5

6.9

8.6

10.3

0.14

0.34

0.69

1.4

2.8

4.1

5.5

6.9

8.6

10.3

0.03

0.07

0.14

0.34

0.9

1.7

3.4

6.9

10.3

0.14

0.41

0.97

2.1

3.4

10.3

0.21

0.48

0.97

2.1

3.4

10.3

0.69

1.0

1.4

2.4

4.1

5.2

6.9

0.69

1.0

1.4

2.4

4.1

5.2

6.9

1.0

1.4

1.7

2.8

4.1

5.2

6.9

1.0

1.4

1.7

2.8

4.1

5.2

6.9

970
1560
2350
3620
3620
3620

970
1560
2350
3620
3620
3620

630

950
1580
2590
4100
6100
6100

789
1740
3156
4890
7120

18,030

1550
2370
4500
7020

17,250

950
1030
1380
1970
2920
3470
5130

1500
1890
2200
3310
5290
6390
8680

1023
1377
1652
2203
3148
3541
5193

1731
2125
2675
3934
5351
6531
8656

26.0

41.8

63.0

97.0

97.0

97.0

26.0

41.8

63.0

97.0

97.0

97.0

16.9

25.5

42.3

69.4
110
163
163

21.1

46.6

84.6
131
191
483

41.5

63.5
121
188
462

25.5

27.6

97.0

52.8

78.3

93.0
137

40.2

50.7

59.0

88.7
142
171
233

27.4

36.9

44.3

59.0

84.4

94.9
139

46.4

57.0

71.7
105
143
175
232

ORIFICE SIZE, IN. / mm

1750
2800
4210
4900
4900

1750
2800
4210
4900
4900

870
1300
2520
4900
6100
6100

1260
2760
5050
8050

11,990

2370
3700
7380

10,750

1180
1580
2200
2920
4730
5680

2050
2760
3790
5130
7890

10,260

1338
1967
2203
2912
4643
5666

2518
3384
3777
5272
8656

10,230

46.9

75.0
113
131
131

46.9

75.0
113
131
131

23.3

34.8

67.5
131
163
163

33.8

74.0
121
216
321

63.5

99.2
198
288

31.6

42.3

59.0

78.3
127
152

54.9

74.0
102
137
211
275

35.9

52.7

59.0

78.0
124
152

67.5

90.7
101
141
232
274

3280
3880
3880
3700

3280
3880
3880
3700

950
1340
2260
6070
6100
6100

2050
4730
9470

13,360

3950
7020

11,680

1810
2370
2920
4020

3230
4100
5130
7730

1810
2597
3148
4720

3620
5115
6453
8656

87.9
104
104

99.2

87.9
104
104

99.2

25.5

35.9

60.6
163
163
163

54.9
127
254
358

106
188
313

48.5

63.5

78.3
108

86.6
110

137
207

48.5

69.9

84.4

127

97.0

137
173
232

4750
3650
3650

4750
3650
3650

1180
1810
3160
6100
6100

2660
9790

12,500

2450
5130
7470

2200
2840
3310

4100
5520
6310

2518
3148
4013

4721
6295
7082

127

97.8

97.8

127

97.8

97.8

31.6

48.5

84.7
163
163

71.3
182
335

64.7
137
200

59.0

76.1

88.7

110
148
169

67.5

84.4
108

127
169
190

3650
2840

3650
2840

1330
2290
4730
6100

3220
7530

2840
6312

2370
3310

4580
6310

2990
4564

6295
7869

97.8

76.1

97.8

76.1

35.6

61.4
127
163

86.3
202

76.1
169

63.5

88.7

123
169

80.1
122

169
211

- continued -

8

Bulletin 74.1:Y692

Table 5. Blanketing Regulating Capacities in SCFH / Nm3/h of 0.97 Specic Gravity Nitrogen (continued)

OUTLET PRESSURE

BODY SIZE

NPS 2 /

DN 50

1. Spring ranges based on regulator installation with the spring case pointed down.

- Light shaded areas show where indicated droop would be exceeded regardless of capacity.

- Dark shaded areas show where maximum operating inlet pressure for a given orice size is exceeded.

(1)

RANGE

, ACCURACY

AND SPRING COLOR

1 to 3 in. w.c. /

2 to 7 mbar

-1 to 2 in. w.c. /

-2 to 5 mbar

Brown

3 to 11 in. w.c. /

7 to 27 mbar

-1 to 2 in. w.c. /

-2 to 5 mbar

Iridite

6.5 in. w.c to 1.2 psig /

16 to 83 mbar, Green or

0.7 to 2 psig /

48 mbar to 0.14 bar, Blue

0.2 psig / 14 mbar

1 to 3.2 psig /

69 mbar to 0.22 bar

0.6 psig / 41 mbar

Orange

2 to 5.5 psig /

0.14 to 0.38 bar

0.5 psig / 34 mbar

Silver with green stripe

2 to 5.5 psig /

0.14 to 0.38 bar

1 psig / 69 mbar

Silver with green stripe

4 to 10 psig /

0.28 to 0.69 bar

1 psig / 69 mbar

Silver

4 to 10 psig /

0.28 to 0.69 bar

2 psig / 0.14 bar

Silver

OUTLET

PRESSURE

SETTING

1 in. w.c. /

2 mbar

3 in. w.c. /

7 mbar

7 in. w.c. /

17 mbar

1 psig /

69 mbar

3 psig /

0.21 bar

5 psig /

0.34 bar

5 psig /

0.34 bar

10 psig /

0.69 bar

10 psig /

0.69 bar

INLET

PRESSURE

psig bar SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h SCFH Nm3/h

2

5
10
20
40
60
80

100
125
150

2

5
10
20
40
60
80

100
125
150

0.5
1
2
5

13
25

50
100
150

2

6
14
30
50

150

3

7
14
30
50

150

10
15
20
35
60
75

100

10
15
20
35
60
75

100

15
20
25
40
60
75

100

15
20
25
40
60
75

100

1/4 / 6.4 3/8 / 9.5 1/2 / 13 3/4 / 19 1 / 25 1-3/16 / 30

0.14

320

680
1030
1580
2500
3410
3650
3650
3650
3650

320

680
1030
1580
2500
3410
3650
3650
3650
3650

330

470

770
1270
1850
3040
5370
7890

590

789

950
1420
2210
2760
3550

950
1180
1380
1970
3160
4100
5130

708

944
1102
1810
2361
2754
3541

1023
1259
1574
2282
2990
4013
5115

8.6

18.2

27.6

42.3

67.0

91.4

97.8

97.8

97.8

97.8

8.6

18.2

27.6

42.3

67.0

91.4

97.8

97.8

97.8

97.8

8.8

12.6

20.6

34.0

49.6

81.5
144
211

15.8

21.1

25.5

38.1

59.2

74.0

95.1

25.5

31.6

37.0

52.8

84.7
110
137

19.0

25.3

29.5

48.5

63.3

73.8

94.9

27.4

33.7

42.2

61.2

80.1
108
137

0.34

0.69

1.4

2.8

4.1

5.5

6.9

8.6

10.3

0.14

0.34

0.69

1.4

2.8

4.1

5.5

6.9

8.6

10.3

0.03

0.07

0.14

0.34

0.90

1.7

3.4

6.9

10.3

0.14

0.41

0.97

2.1

3.4

10.3

0.21

0.48

0.97

2.1

3.4

10.3

0.69

1.0

1.4

2.4

4.1

5.2

6.9

0.69

1.0

1.4

2.4

4.1

5.2

6.9

1.0

1.4

1.7

2.8

4.1

5.2

6.9

1.0

1.4

1.7

2.8

4.1

5.2

6.9

930
1560
2350
3620
4420
4420

930
1560
2350
3620
4420
4420

630

950
1580
2590
4100
6700
7890

1030
1970
3390
5130
7120

1740
3310
5130
7500

19,820

950
1030
1380
1970
2920
3470
5130

1500
1890
2200
2050
5290
6390
8680

1023
1377
1652
2203
3148
3541
5193

1731
2125
2675
3934
5351
6531
8656

24.9

41.8

63.0

97.0
118
118

24.9

41.8

63.0

97.0
118
118

16.9

25.5

42.3

69.4
110
180
211

27.6

52.8

90.9
137
191

46.6

88.7
137
201
531

25.5

27.6

37.0

52.8

78.3

93.0
137

40.2

50.7

59.0

54.9
142
171
233

27.4

36.9

44.3

59.0

84.4

94.9
139

46.4

57.0

71.7
105
143
175
232

ORIFICE SIZE, IN. / mm

1750

46.9

2800

75.0

4210

113

3450

92.5

3450

92.5

1750

46.9

2800

75.0

4210

113

3450

92.5

3450

92.5

870

23.3

1300

34.8

2520

67.5

4900

131

7180

192

7890

211

1340

35.9

2840

76.1

5130

137

8130

218

11,990

321

2600

69.7

4180

112

7930

213

11,400

306

1180

31.6

1580

42.3

2200

59.0

2920

78.3

4730

127

5680

152

2050

54.9

2760

74.0

3790

102

5130

137

7890

207

10,260

275

1338

35.9

1967

52.7

2203

59.0

2912

78.0

4643

124

5666

152

2518

67.5

3384

90.7

3777

101

5272

141

8656

232

10,230

274

4000
6050
3650
3650

4000
6050
3650
3650

950
1340
2260
6080
7890
7890

2450
5680

10,650
16,730

4730

770

14,480

1810
2370
2920
4020

4100
5520
6310

2518
3148
4013

4721
6295
7082

107
162

97.8

97.8

107
162

97.8

97.8

25.5

35.9

60.6
163
211
211

65.7
152
285
448

127
206
388

48.5

63.5

78.3
108

110
148
169

67.5

84.4
108

127
169
190

5010
4630
4060

5010
4630
4060

1180
1810
3160
7890
7890

3230
7730

13,490

2550
5880

10,450

2200
2840
2920

4100
5520
6310

2518
3148
4013

4721
6295
7082

134
124
109

134
124
109

31.6

48.5

84.7
211
211

86.6
207
362

68.3
158
280

59.0

76.1

78.3

110
148
169

67.5

84.4
108

127
169
190

5930
4260

5930
4260

1330
2290
4730
7890

3390
8760

3050
7140

2370
3310

4580
6310

2990
4564

6295
7869

159
114

159
114

36.5

61.4
127
211

90.9
235

81.7
191

63.5

88.7

123
169

80.1
122

169
211

9

Bulletin 74.1:Y692

1/4 NPT
DOWNSTREAM
CONTROL LINE
CONNECTION

10.38 /
264

17.44 /
443

NPT DIMENSIONS

2.94 /
75

5.88 /
149

8.94 /
227

8.94 /
227

A

10.38 /
264

17.44 /
443

A - CAST IRON FLANGES ARE 10 IN. / 254 mm FACE-TO-FACE ; STEEL, STAINLESS STEEL AND HASTELLOY® C FLANGES ARE 14 IN. / 356 mm FACE-TO-FACE.

IN. /
mm

FLANGED DIMENSIONS

Figure 3. Dimensions

Table 6. Orice Sizes and Coefcients for Relief Valve Sizing

BODY SIZE ORIFICE SIZE

NPS DN In. mm

1/4
3/8

1-1/2 and 2 40 and 50

1/2
3/4

1

1-3/16

6.4

9.5
13
19
25
30

WIDE-OPEN C

1.51

3.14

5.43

11.9
20
26

v

WIDE-OPEN C

g

53.0
111

190
415
700
910

C

1

35

Hastelloy® C is a mark owned by Haynes International, Inc.

10

Ordering Information

Bulletin 74.1:Y692

Carefully review the Specications section, then specify

the desired selection on the Ordering Guide. If a pilot

Ordering Guide

Body Size (Select One)
NPS 1-1/2 / DN 40
NPS 2 / DN 50

Body Material and End Connection Style (Select One)
Cast Iron
NPT***
CL125 FF (NPS 2 / DN 50 body only)*

WCC Steel CF8M Stainless Steel
NPT*** NPT***
SWE** CL150 RF**
CL150 RF** CL300 RF**
CL300 RF** PN 16/25/40 RF*
PN 16/25/40*

Spring Case Material (Select One)
Cast iron***
WCC steel***
CF8M Stainless steel**

Diaphragm Case Material (Select One)
Cast iron***
WCC steel***
CF8M Stainless steel**

Trim Material (Select One)
304 Stainless steel***
316 Stainless steel**

Diaphragm Material (Select One)
Nitrile (NBR) (standard)***
Fluorocarbon (FKM)***
Ethylenepropylene (EPDM)***
Silicone (VMQ)***

Disk Material (Select One)
Nitrile (NBR) (standard)***
Fluorocarbon (FKM)***

Polytetrauoroethylene (PTFE)***
Ethylenepropylene (EPDM)***

setpoint is not requested, the regulator will be factory set
at the approximate midrange.

OriceSize(Select One)

1/4 in. / 6.4 mm*** 3/4 in. / 19 mm***
3/8 in. / 9.5 mm*** 1 in. / 25 mm***
1/2 in. / 13 mm*** 1-3/16 in. / 30 mm***

Outlet Pressure Range (Select One)

1 to 3 in. w.c. / 2 to 7 mbar, Brown***
3 to 11 in. w.c. / 7 to 27 mbar, Iridite***

6.5 in. w.c. to 1.2 psig / 16 to 83 mbar, Green***

0.7 to 2 psig / 48 mbar to 0.14 bar, Blue***
1 to 3.2 psig / 69 mbar to 0.22 bar, Orange***
2 to 5.5 psig / 0.14 to 0.38 bar,

Silver with Green stripe***

4 to 10 psig / 0.28 to 0.69 bar, Silver***

Pressure Registration (Select One)
Internal*** External**

PTFE Diaphragm Protector (Optional)
Yes

CRN (Canadian Registration Number)
Required (Optional)

Yes

PED (Pressure Equipment Directive)
Conformity (Optional)

Yes

Replacement Parts Kit (Optional)
Yes, send one replacement parts kit to match

this order.

11

Bulletin 74:1:Y692

Ordering Guide (continued)

Regulators Quick Order Guide

* * *

* *

Availability of the product being ordered is determined by the component with the
longest shipping time for the requested construction.

Readily Available for Shipment

Allow Additional Time for Shipment

Special Order, Constructed from Non-Stocked Parts.

*

Consult your local Sales Ofce for Availability.

TankBlanketingSpecicationWorksheet

ApplicationSpecications:

Tank Size _______________________________________________
Pump In Rate ___________________________________________
Pump Out Rate _________________________________________

Blanketing Gas (Type and Specic Gravity) _______________

Pressure Requirements:

Maximum Inlet Pressure (P
Minimum Inlet Pressure (P

) __________________________

1max

) ___________________________

1min

Control Pressure Setting (P2) _____________________________
Maximum Flow (Q

) ____________________________________

max

Accuracy Requirements:

0.25 in. w.c. / 0.6 mbar 0.5 in. w.c. / 1 mbar
1 in. w.c. / 2 mbar 2 in. w.c. / 5 mbar
Other

OtherSpecications:

Is a vapor recovery regulator required? Yes No
Special Material Requirements: Ductile Iron Steel

Stainless steel Other ___________________________

Other Requirements: _____________________________________

_________________________________________________________

Industrial Regulators

Emerson Process Management
Regulator Technologies, Inc.

USA - Headquarters
McKinney, Texas 75070 USA
Tel: [phone]
Outside U.S. [phone]

Asia-Pacic

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Tel: [phone]

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a business of Emerson Process Management.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or

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maintenance of any Emerson Process Management Regulator Technologies, Inc. product remains solely with the purchaser.

Natural Gas Technologies

Emerson Process Management
Regulator Technologies, Inc.

USA - Headquarters
McKinney, Texas 75070 USA
Tel: [phone]
Outside U.S. [phone]

Asia-Pacic

Singapore 128461, Singapore
Tel: [phone]

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[phone]

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