Cla-Val 90-42 - Manual

Seawater Service Pressure Reducing Valve
90-42
MODEL
Sizes: Threaded Ends: 1" - 3" Materials: Main valve body & cover Adjustment 15 - 75 psi (150 class)
Globe Flanged: 2" - 36" Ductile Iron ASTM A-536* Ranges: 30 - 300 psi (300 class)
Angle Flanged: 2" - 16" Cast Steel ASTM A216-WCB*
Naval Bronze ASTM B61
Main Valve and pilot valve di-
aphragm and disc:
Burna-N ® synthetic rubber
End Details: Cast Steel ANSI B16.5 Stainless Steel ASTM A743-CF-8M
Bronze ANSI B16.24 Ni. AL. Bronze ASTM B148
Stainless Steel ANSI B16.5 Super Duplex SST
Ductile Iron ANSI B16.42 Monel QQ-N-281 Class B
*The 90G-42 (globe) and
90A-42 (angle) in cast
steel are supplied with
standard internal and
external epoxy coating
Main valve trim:
Pressure 150 Class 250 psi Max. ASTM B61 Bronze Seat,
Ratings: 300 Class 400 psi Max. Monel Trim
Temperature Pilot control system:
Range: Water 180°F Max. Cast Bronze with Monel Trim
Monel, Super Duplex Stainless Steel optional
Stainless Steel 316 Tubing & Fittings
Function
Cla-Val Model 90G-42 (globe) and 90A-42(angle)
Seawater Service Pressure Reducing Valves auto-
matically reduce a higher inlet pressure to a steady
lower outlet pressure regardless of changing flow
rate and/or varying inlet pressure. The valves pilot
control system is very sensitive to slight downstream
pressure fluctuations, and will automatically open or
close to maintain the desired pressure setting. The
downstream pressure can be set over a wide range
by turning the adjustment screw on the CRD pilot
control. The adjustment screw is protected by a
screw-on cover, which can be sealed to discourage
tampering.
INLET OUTLET
4
1
3
2
• Globe or Angle Pattern
• Proven Reliable Design
• Available in Cast Bronze, Iron and Steel
• Accurate Pressure Control
• In Line Service
Cla-Val 90G-42 (globe) and 90A-42 (angle) Pressure Re-
ducing Valves are indispensable in any fire protection sys-
tem. Our diaphragm actuated design is proven highly reliable
and easy to maintain. We offer both a globe or angle pattern
with a full range of adjustments. These valves are available
in cast bronze, iron or steel and all special alloy.
Epoxy coating for all system valves are supplied with internal
and external epoxy coating of the main valve wetted sur-
faces, for ductile iron and cast steel only.
90G-42
Globe Pattern
Schematic Diagram
Item Description
1 Model 100S/2100S
Hytrol (Globe or Angle)
2 X58C Restriction Tube Fitting
3 CRD Pressure Reducing Control
4 X46A Flow Clean Strainer
If UL Listed is required for Model 90-42 Seawater
Service use Model 90-21KX when ordering. UL Listed
sizes limited to 1
1 ⁄
2
- 8” sizes.