Cla-Val Pressure Reducing Valves:
Waterworks & Fire Protection & Pilot Controls & Specialty

Waterworks Pressure Reducing Valves

Spec & Tech Sheets       

Model # 90-01 / 690-01

Benefits & Features

The Cla-Val Model 90-01/690-01 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. This valve is an accurate, pilot-operated regulator capable of holding downstream pressure to a pre-determined limit. When downstream pressure exceeds the pressure setting of the control pilot, the main valve and pilot valve close drip-tight.

Model # 90-01KO

Benefits & Features

The Cla-Val Model 90-01KO Hytrol Pressure Reducing Valve with Anti-Cavitation Trim automatically reduces a higher inlet pressure to a steady lower downstream pressure, regardless of changing flow rate and/or varying inlet pressure. The valve is equipped with Anti-Cavitation Trim to provide for optimum downstream pressure control while reducing noise and eliminating damage associated with cavitation.

Model # 90-01H / 690-01H

Benefits & Features

The Cla-Val Model 90-01H/690-01H 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. The valve is equipped with the X43H H-Style Strainer to provide effective means of removing unwanted solid particles in pipeline flow, preventing fouling, debris and particle buildup in the Pressure Reducing Valve.

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Model # 90-48 / 690-48

Benefits & Features

The Cla-Val Model 90-48/690-48 Pressure Reducing Valve with Low Flow By-Pass automatically reduces a higher inlet pressure to a steady lower downstream pressure, regardless of changing flow rate. The low flow by-pass capability is achieved by using the Cla-Val Model CRD-40 Direct Acting Pressure Reducing Valve as an integral part of the main valve. By doing this, space is saved and installation and maintenance become much easier.

Model # 90-72 / 690-72

Benefits & Features

The Cla-Val Model 90-48/690-48 Pressure Reducing Valve with Low Flow By-Pass automatically reduces a higher inlet pressure to a steady lower downstream pressure, regardless of changing flow rate. The low flow by-pass capability is achieved by using the Cla-Val Model 990 Direct Acting Pressure Reducing Valve as an integral part of the main valve.

Model # 90-99

Benefits & Features

The Cla-Val Model 90-99 Pressure Reducing Valve with Low Flow By-Pass automatically reduces a higher inlet pressure to a steady lower downstream pressure, regardless of changing flow rate.  The low flow by-pass capability is achieved by using a 2" grooved end 90-01 Pressure Reducing Valve as an integral part of the main valve.  This compact design saves space and makes for an easier installation process.

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Model # 92-01 / 692-01

Benefits & Features

The Cla-Val Model 92-01/692-01 Combination Pressure Reducing and Pressure Sustaining Valve automatically performs two independent functions. It maintains a constant downstream pressure, regardless of fluctuating demand and sustains the upstream pressure to a pre-determined minimum. 

Model # 93-01 / 693-01

Benefits & Features

The Cla-Val Model 93-01/693-01 Combination Pressure Reducing and Solenoid Shut-Off Valve automatically reduces higher inlet pressure to a steady lower downstream pressure. 

Use this valve to reduce high transmission line pressures to lower distribution system levels, while opening and closing on command. The solenoid control feature can be activated by an electrical signal from a timer or programmer. 

In Fire Service applications, the 93-01/693-01 can be installed in a distribution line where there is a need to close the valve on the starting of a fire pump. The solenoid control is activated on pump start-up and closes the valve.

Model # 94-01 / 694-01

Benefits & Features

The Cla-Val Model 94-01/694-01 Combination Pressure Reducing and Surge Control Valve automatically reduces a higher inlet pressure to a steady lower downstream pressure. When downstream pressure rapidly exceeds the pressure setting of the pressure reducing control pilot, the surge pilot (CRL) will open quickly to prevent a rapid pressure rise downstream (i.e. surge condition).

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Model # 590-01 / 6590-01

Benefits & Features

The Cla-Val Model 590-01/6590-01 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. All metal parts are 316L Stainless Steel for high corrosion resistance in many industrial applications.

Fire Protection Pressure Reducing Valves

Spec & Tech Sheets       

Model # 90-21

Benefits & Features

Cla-Val 90G-21 (globe) and 90A-21 (angle) Pressure Reducing Valves automatically 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.

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Pressure Reducing Pilot Controls

Spec & Tech Sheets       

Model # CRA

Benefits & Features

The Cla-Val Models CRA and CRD Pressure Reducing Control  automatically reduce a higher inlet pressure to a lower outlet pressure. They are direct acting, spring loaded, diaphragm type control regulators that operate hydraulically or pneumatically. These valves are held open by the force of the compression spring above the diaphragm, and close when the downstream pressure acting on the underside of the diaphragm exceeds the spring setting. The CRD senses downstream pressure directly and the CRA senses downstream pressure remotely.

Flow through the control responds to changes in downstream pressure. Turning the adjusting screw clockwise increases the delivery pressure. Turning it counterclockwise decreases the pressure. A resilient disc assures tight shut-off on dead-end service.

Model # CRD

Benefits & Features

Models CRA and CRD may be installed in any position. There is one inlet port and two outlets for either straight or angle installation. The second outlet port can be used for a gauge connection.

These valves are ideal small capacity regulators for applications such as water coolers, fountains, humidifiers, gas refrigerators, and air supply to tools and instruments. Remote pressure sensing is available with the CRA. They also have numerous applications as pilot controls on many Cla-Val Automatic Control Valves.

Model # CRD40

Benefits & Features

The Cla-Val Model CRD40 Pressure Reducing Control automatically reduce a higher inlet pressure to a lower outlet pressure. This direct-acting, spring-loaded, diaphragm-type control can operate hydraulically or pneumatically. These valves are held open by the force of the compression spring above the diaphragm, and close when the downstream pressure acting on the underside of the diaphragm exceeds the spring setting. The CRD40 senses downstream pressure directly. Flow through the control responds to changes in downstream pressure. Turning the adjusting screw clockwise increases the delivery pressure, and turning it counterclockwise decreases the pressure. A resilient disc assures tight shut-off on dead-end service.

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Specialty Pressure Reducing Valves

Spec & Tech Sheets       

Model # 790-01 Pressure Reducing Valve

Benefits & Features

The Cla-Val Model 790-01 is a hydraulically operated, pilot actuated automatic control valve for pressure reducing service. The main valve consists of only two parts: a stainless steel body, and an elastomeric liner or control element.

Because the valve will not chatter or slam under low flow conditions, it is not necessary to parallel Cla-Val Model 790-01 with a second smaller size control valve to obtain accurate pressure control at low flow rates. In any size, Cla-Val Model 790-01 will control pressure right down to shutoff.