Table 1.
Body Sizes and End Connection Styles
Installation
!
WARNING
Personal injury, property damage,
equipment damage, or leakage due to
escaping gas or bursting of pressure-
containing parts may result if this
equipment is overpressured or is
installed where service conditions could
exceed the limits given in specifications,
or where conditions exceed any
ratings of the adjacent piping or piping
connections. To avoid such injury or
damage, provide pressure-relieving or
pressure-limiting devices (as required
by the appropriate code, regulation,
or standard) to prevent service
conditions from exceeding those limits.
Additionally, physical damage to this
equipment could cause personal injury
or property damage due to escaping
gas. To avoid such injury or damage,
install the equipment in a safe and well
ventilated location.
Equipment operation within ratings does not preclude
the possibility of damage from debris in the lines or from
external sources. This equipment should be inspected
for damage after any overpressure condition.
BODY SIZE,
NPS / DN
CONSTRUCTION MATERIAL AND END CONNECTION STYLE
Cast Iron
Steel or Stainless Steel
Hastelloy
®
C
1-1/2 / 40
2 / 50
NPT
NPT, SWE, ANSI CL150 RF,
CL300 RF, or PN 16/25/40
ANSI CL150 RF
1. All flanges are welded on to the body and have a face-to-face dimension of 14 in. / 356 mm.
Body Sizes and End Connection Styles
(1)
See Table 1
Maximum Allowable Emergency Inlet
(Casing) Pressure
(2)
±15 psig / ±1.03 bar
Maximum Allowable Pressure Without Internal
Parts Damage
(2)
±8 psig / ±0.55 bar
Maximum Downstream Pressure
(2)
Full Vacuum
Vacuum Control Pressure Ranges
(2)
See Table 2
Wide-Open Flow Coefficients
C
g
:
515
C
v
:
14.7
C
1
:
35
IEC Sizing Coefficients
X
T
:
0.78;
F
D
:
0.67;
F
L
:
0.89
1. End connections for other than U.S. standards can usually be provided; consult the local Sales Office.
2. The pressure/temperature limits in this instruction manual and any applicable standard or code limitation should not be exceeded.
Specifications
Some general ratings and specifications for the Y696VR Series vacuum regulators are given on page 2. Individual
regulators from the factory are supplied with the specific data stamped on the nameplate.
Spring Case Connection
3/4 NPT
Control Line Connection
1/2 NPT
Gauge Tap Connection
1/4 NPT
Pressure Registration
Type Y696VR:
Internal
Type Y696VRM:
External
Material Temperature Capabilities
(2)
Nitrile (NBR):
-40 to 180°F / -40 to 82°C
Fluorocarbon (FKM):
40 to 300°F / 4 to 149°C
Ethyleneproplyene (EPR):
-20 to 275°F /
-29 to 135°C
Perfluoroelastomer (FFKM):
0 to 300°F /
-18 to 149°C
Silicone (VMQ):
-40 to 400°F / -40 to 204°C
Approximate Weights
Cast Iron:
45 lbs / 20 kg
Steel, Stainless steel, or Hastelloy
®
C:
57 lbs /
26 kg
Hastelloy
®
C is a mark owned by Haynes International, Inc.
2
Y696VR Series
