Data Sheet

Bulletin 74.2:Y695A
2
Specications
Available Congurations
Type Y695A: Direct-operated vapor
recovery regulator.
Type Y695AM: Direct-operated vapor recovery
regulator equipped with a blocked throat and O-ring
stem seal. The lower diaphragm casing is tapped
1/2 NPT for control line connection.
Body Sizes
NPS 3/4 or 1 (DN 20 or 25)
End Connection Styles
See Table 1
Maximum Allowable Inlet (Casing) Pressure
(1)
150 psig (10,3 bar)
Maximum Outlet Pressure
(1)
150 psig (10,3 bar)
Maximum Emergency Inlet Pressure to Avoid
Internal Parts Damage
150 psig (10,3 bar)
Control Pressure Ranges
(1)
See Table 2
Flow Coefcients with Fully Open Disk
C
g
: 120, C
V
: 3.43, C
1
: 35
Flow Capacities
See Table 4
Orice Size
7/16-inch (11 mm)
Construction Materials
See Table 3
Material Temperature Capabilities
(1)
Nitrile:
-20° to 180°F (-29° to 82°C)
Fluorocarbon (FKM):
40° to 300°F (4° to 149°C)
Peruoroelastomer (FFKM):
-20° to 300°F (-29° to 149°C)
Ethylenepropylene (EPDM):
-20° to 300°F (-29° to 149°C)
Pressure Setting Adjustment
Adjusting Screw
Spring Case Vent Connection
1/4 NPT
Diaphragm Case Connection
1/2 NPT
Approximate Weight
19 pounds (9 kg)
1. The pressure/temperature limits in this bulletin and any applicable standard or code limitation should not be exceeded.
Table 1. End Connection Styles
BODY SIZES,
NPS (DN)
END CONNECTION STYLES
(1)
Ductile Iron
CF8M
Stainless Steel
Hastelloy
®
C
3/4 or 1 (20 or 25) NPT
NPT, ANSI Class 150 RF,
ANSI Class 300 RF, or PN 16/25/40
ANSI Class 150 RF
1. All anges have 14-inches (356 mm) face-to-face.
Table 2. Control Pressure Ranges
RELIEF SET PRESSURE RANGE
SPRING PART
NUMBER
SPRING COLOR SPRING WIRE DIAMETER FREE LENGTH
2 to 7-inches w.c.
3 to 13-inches w.c.
10 to 26-inches w.c.
(5 to 17 mbar)
(1)(2)
(7 to 32 mbar)
(1)(2)
(25 to 65 mbar)
1B653827052
1B653927022
1B537027052
Red
Olive drab
Yellow
0.085-inch
0.105-inch
0.114-inch
(2,2 mm)
(2,7 mm)
(2,9 mm)
3.625-inches
3.75-inches
4.188-inches
(92,1 mm)
(95,2 mm)
(106 mm)
0.9 to 2.5 psig
1.3 to 4.5 psig
3.8 to 7 psig
(0,06 to 0,17 bar)
(0,09 to 0,31 bar)
(0,26 to 0,48 bar)
1B537127022
1B537227022
1B537327052
Light green
Light blue
Black
0.156-inch
0.187-inch
0.218-inch
(4,0 mm)
(4,8 mm)
(5,5 mm)
4.060-inches
3.938-inches
3.980-inches
(103 mm)
(100 mm)
(101 mm)
1. Spring ranges based on spring case installed pointed down. When installed pointing up, the spring ranges increase by 2-inches w.c. (5 mbar).
2. Do not use Fluorocarbon (FKM) diaphragm with these springs at diaphragm temperatures lower than 60°F (16°C).