Cla-Val 90AF-4A-3 - Manual

Pressure Reducing Valve
MODEL
90AF4A-3
• Maintains constant downstream pressure
• Closes quickly to prevent downsream surge when flow is
stopped suddenly
• Deadman control
• Surge control prevents damage to refuelers
• Used in conjunction with Cla-Val Bottom-Loading Pantograph
• Fail-safe operation
The Cla-Val Model 90AF-4A-3 Hytrol Valve is used as the basic unit in almost
all Cla-Val automatic control valves for petroleum applications. The 90AF-4A-3
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 90AF-4A-3 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)
2 X47A Ejector
3 Bell Reducer
4 CFM2 Float Control
5 X101 Valve Position Indicator
X105L Switch Assembly (Optional)
Optional Features
Item Description
A X46A Flow Clean Strainer
B CK2 Cock (Isolation Valve)
C CV Flow Control (Closing)
G 81-01 Check Valve With Cock
Q Quick Connect Assembly
S CV Flow Control (Opening)
T 55F Thermal Relief Control
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