Hydraulic Deep Well Pump Control Valve - 61-02 & 661-02 | Cla-Val

Cla-Val 61-02 / 661-02 – Deep Well Pump Control Valve

The Cla-Val 61-02 / 661-02 is a hydraulically actuated diaphragm valve designed for deep well pump discharge control. Installed at the pump outlet, it mitigates hydraulic shock during pump start-up and shutdown by initially venting air, sand, and water to atmosphere.

Operation

With the pump off, the valve remains open. On start-up, solenoid CSM11-A2-2 is energized, causing the 61-02 to close gradually. Flow is progressively transferred to the main line as the primary check valve opens.

During shutdown, the solenoid de-energizes and the valve opens slowly to vent. Pump pressure decreases gradually, allowing the check valve to close without slam. Limit switch X105LOW disables the starter when the valve is fully open.

Technical Data

• Main valve: 100-02 Powertrol
• Sizes: DN65–DN600
• Configuration: globe or angle pattern
• Connection: threaded or ANSI flanged
• Pressure class: ANSI 150 / 300
• Body: ASTM A536, ASTM A216 WCB, or bronze UNS 87850
• Disc/diaphragm: Buna-N, reinforced diaphragm
• Stem/spring: stainless steel
• Water temperature: up to 82 °C
• Pilot system: low-lead bronze, optional stainless steel, aluminum, or Monel
• Max CSM11 pressure: 300 psi

Sizing Criteria

Valve must vent pump flow at a pressure at least 10 psi below static line pressure. Cv is determined from the pump curve; select a valve size with equal or greater Cv.

Applications

• Boreholes and deep well pumps
• Water supply pump stations
• Systems with sand/air at start-up
• Lines requiring controlled check valve closure
• Installations with PC-22D or electric interlock

Discharge venting requires drainage with no backpressure and an air gap. For power failure protection, use surge anticipator 52-02 or 652-03.