Cla-Val 43-37/643-37 - Manual

Rate of Flow and Fuel Shut Off Valve
MODEL
43-37
• Installed where flow is limited to a preselected maximum
for optimum pump control
• Fail-Safe construction
• Solenoid emergency shut-off
• Adjustable maximum flow rate setting
• No packing glands assure leak proof service
• Available in aluminum, cast steel, stainless steel or
ductile iron
The Cla-Val Model 43-37 Hytrol Valve is used as the basic unit in almost all
Cla-Val automatic control valves for petroleum applications. The 43-37 is a
hydaulically-operated, diaphragm actuated, globe or angle pattern valve. It is
available in various materials and full range of sizes. It consists of three major
components: body, diaphragm assembly and cover. The diaphragm assembly
is the only moving part. The rugged simplicity of design and packless
construction assure a long life dependable, trouble-free operation. Should the
diaphragm become damaged the valve will close tight, providing “fail safe”
operation. The 43-37 Hytrol Valve is used in many types of piping system
requiring control, flow regulation, rate of flow control, or check valve operation.
Schematic Diagram
Item Description
1 100-34 Hytrol (Reverse Flow)
100-37 Hytrol
2 X101 Valve Position Indicator
X105L Switch Assembly
3 X47A Ejector
4 CS3XM Solenoid Control
5 100-01 Hytrol (Reverse Flow)
6 CDHS18 Differential Control
7 X52A-1 / X52E Orifice Plate Assembly
Optional Features
Item Description
A X46A Flow Clean Strainer
B CK2 (Isolation Valve)
C CV Flow Control (Closing)
G 81-01 Check Valve
Q Quick Connect Assembly
S CV Flow Control (Opening)
T 55F Thermal Relief Control
Y X43 "Y" Strainer
Specifications
Sizes
Globe: 1 1/2” - 16” flanged
Angle: 2” - 16” flanged
End Details
Flanged:
Cast Aluminum, 150 ANSI B16.1
Cast Bronze, 150 & 300 ANSI B16.24
Ductile Iron, 150 & 300 ANSI B16.42
Cast Steel, 150 & 300 ANSI B16.5
Temperature Range
Light Petroleum Product -40° to+140°F
Pressure Ratings
150 class 175-PSI Max.
150 class 275-PSI Max.
250 class 300-PSI Max.
300 class 400-PSI Max.
Material
Body & cover:
Cast Aluminum 356-T6
Cast Bronze ASTM B62
Ductile Iron ASTM A-536
Cast Stainless Steel 303
Cast Steel ASTM A216-WCB
Valve trim:
Bronze ASTM B61
Stainless Steel 303
Rubber parts:
Buna-N® Synthetic Rubber
Viton
Other Materials
Available on Special Order