Emerson Y695VR Data Sheet
Bulletin 71.3:Y695VR
Y695VR Series Vacuum Regulator
W7295
January 2009
Figure 1. Type Y695VR Vacuum Regulator
Introduction
The Y695VR Series direct-operated vacuum regulators are used where a decrease in vacuum must be limited,
such as between a tank and vacuum source to control vacuum in tank. The Type Y695VR has internal pressure
registration. The Type Y695VRM has a control line connection and blocked throat for external pressure registration.
Features
• Tamper Resistant Adjustment—Closing cap
and spring case on many types allow installation
of sealing wire to discourage or detect
unauthorized adjustment of pressure setting.
• Precision Control of Low Pressure Settings—
Large diaphragm areas provide more accurate
control at low pressure settings.
• Easy Conversion—The Y695VR Series Vacuum
Regulators are easily adapted between external
and internal registration.
• Common Spare Parts—The Type Y695VR and
Type Y695VRM share common spare parts with
the other Y690A Series products.
• Corrosion Resistance—Constructions are
available in a variety of materials for compatibility
with corrosive process gases.
www.emersonprocess.com/regulators
D102597X012
Bulletin 71.3:Y695VR
Specications
Available Congurations
Type Y695VR: Direct-operated vacuum regulator
Type Y695VRM: Direct-operated vacuum regulator
with blocked throat for external pressure registration
Body Sizes and End Connection Styles
BODY SIZE,
INCHES (DN)
3/4 or 1 (20 or 25) NPT
1. Weld-on ange dimension is 14-inches (356 mm) face-to-face.
Maximum (Casing) Pressure
END CONNECTION STYLES
Ductile Iron Steel or Stainless Steel
(2)
(1)
NPT, SWE,
or CL150 RF
Full Vacuum
Maximum Downstream Pressure
(2)
Full Vacuum
Change in Control Pressure to Wide-open
(2)
See Table 2
Pressure Registration
Type Y695VR: Internal
Type Y695VRM: External
Orice Size
7/16-inch (11 mm)
Capacities
See Table 2
1. End connections for other than U.S. standards can usually be provided; consult the local Sales Ofce.
2. The pressure/temperature limits in this bulletin and any applicable standard or code limitation should not be exceeded.
Flow Coefcients
Cg: 120
Cv: 3.43
C1: 35
Material Temperature Capabilities
Nitrile (NBR): -20° to 180°F (-29° to 82°C)
Fluorocarbon (FKM):
40° to 300°F (4° to 149°C)
Peruoroelastomer (FFKM):
-20° to 300°F (-29° to 149°C)
Spring Case Connection
1/4-inch NPT
Diaphragm Case Connection
1/2-inch NPT
Construction Materials
See Table 1
Pressure Setting Adjustment
Adjusting nut
Additional Options
Umbrella vent assembly for spring
case connection
Approximate Weight
19 pounds (9 kg)
(2)
BODY SPRING CASE DIAPHRAGM CASE TRIM DIAPHRAGM DISK
Ductile iron, CF8M Stainless
steel, or Hastelloy® C
SPRING RANGE,
PART NUMBER,
AND COLOR
0 to 4-inches w.c.
(0 to 10 mbar)
0N039427222
Unpainted
0.05 to 0.75 psig
(0,003 to 0,05 bar)
0N086027022
Unpainted
0.15 to 1.75 psig
(0,01 to 0,12 bar)
0N086127022
Unpainted
0.25 to 2.75 psig
(0,02 to 0,19 bar)
0N022027022
Dark green
1.5 to 4.75 psig
(0,10 to 0,33 bar)
0N004327022
Yellow
3.0 to 12.8 psig
(0,21 to 0,88 bar)
1D141827012
Dark blue
SPRING WIRE
DIAMETER
0.062-inches
(1,57 mm)
0.105-inches
(2,67 mm)
0.125-inches
(3,18 mm)
0.135-inches
(3,43 mm)
0.172-inches
(4,37 mm)
0.207-inches
(5,26 mm)
Ductile iron or
CF8M Stainless steel
MAXIMUM
ALLOWABLE
VACUUM
5.1 psig (0,35 bar)
5.7 psig (0,39 bar)
6.5 psig (0,45 bar)
7.4 psig (0,51 bar)
9.2 psig (0,63 bar)
12.0 psig (0,83 bar)
Table 1. Construction Materials
Ductile iron or
CF8M Stainless steel
316
Stainless steel
Table 2. Y695VR Series Capacities
CONTROL
PRESSURE
SETTING VACUUM
2-inches w.c.
(5 mbar)
0.5 psig
(0,03 bar)
1 psig
(0,07 bar)
2 psig
(0,14 bar)
4 psig
(0,28 bar)
9 psig
(0,62 bar)
OUTLET
VACUUM
7.5 psig
(0,52 bar)
7.5 psig
(0,52 bar)
7.5 psig
(0,52 bar)
7.5 psig
(0,52 bar)
7.5 psig
(0,52 bar)
12 psig
(0,83 bar)
Nitrile (NBR) or
Fluorocarbon (FKM)
CHANGE IN
CONTROL PRESSURE
TO WIDE-OPEN
1-inch w.c. (2 mbar) 1650 (44,2)
5.5-inches w.c. (14 mbar) 1614 (43,3)
0.44 psig (0,03 bar) 1578 (42,3)
0.63 psig (0,04 bar) 1464 (39,2)
1.44 psig (0,10 bar) 1290 (34,6)
3.88 psig (0,27 bar) 1140 (30,6)
Nitrile (NBR) or
Fluorocarbon (FKM)
CAPACITY IN SCFH
(Nm³/h) OF 1.0
SPECIFIC GRAVITY AIR
2
Loading...