The Cla-Val Model 90-37/690-37 Pressure Reducing Valve automatically reduces a higher inlet pressure to a steady lower downstream pressure, regardless of changing flow rate and/or varying inlet pressure.
Hydraulic Pressure Control Valves - 90-37 & 690-37 Pressure Reducing Valve | Cla-Val
Cla-Val 90-37 / 690-37
Hydraulic pressure reducing valve for water distribution networks. Reduces higher upstream pressure to a stable, lower downstream pressure, independent of inlet pressure or flow fluctuations.
Operation
Operates hydraulically, without electrical supply. The pilot circuit modulates the main valve opening to maintain downstream pressure at the setpoint. Suitable for continuous duty in municipal and industrial water systems.
Applications
- Pressure zoning in potable water networks
- Downstream pipeline protection
- Municipal water distribution
- Industrial water supply systems
- Building networks with variable demand
Variants
- 90-37: Full port design for standard flow rates.
- 690-37: Reduced port for lower flows or oversized pipelines.
Construction
- Connection: Flanged
- Standard: ANSI
- Pressure classes: 150 lbs, 300 lbs
- Materials: Bronze, ASTM A216 WCB, ductile iron
Selection Criteria
Sizing based on peak and minimum flow, upstream pressure, required downstream pressure, pressure reduction ratio, cavitation risk, and flow velocity.
FAQ
Is this a sustaining valve?
No. It regulates downstream pressure only.
Is electrical power required?
No. Basic operation is hydraulic.
Description
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