Hydraulically-operated valve 735-55-M

for controlfor waterfor industrial water

Overview
Hydraulically operated, solenoid-controlled, off-line surge-anticipating control valve designed to pre-open on an electric signal to dissipate returning high-pressure waves and relieve excessive system pressure. The valve closes drip-tight with a controlled profile to prevent closing surge and supports inline serviceability for maintenance.

Key Features & Benefits

• Excellent anti-cavitation characteristics
• Wide flow range for variable system demands
• High stability and accurate regulation
• Drip‑tight sealing to avoid leakage

Double chamber design

• Moderated valve reaction for smooth actuation
• Protected and isolated diaphragm
• Optional operation at very low inlet pressures
• Controlled closing curve to prevent transient spikes

Additional Features

• Flexible modular design — easy addition of options
• Obstacle-free flow path to minimize pressure loss and wear
• Optional V‑Port throttling plug for stable low‑flow control
• High-grade materials suitable for potable and process water
• In-line serviceable actuator for simplified maintenance
• Certified to functional and drinking water standards (EN‑1074, NSF/ANSI 61‑372, WRAS, AS 5081 and others)

Typical Applications

• Pumping stations — surge control and protection

See it in action / Demonstrations

• Product demonstration and application videos are available showing valve operation, pre-opening behavior and benefits in pumping-station surge protection scenarios.

Specifications

• Product type: Surge‑Anticipating Control Valve
• Model: 735-55-M
• Series: 700 Sigma Series
• Operation: Hydraulically operated, solenoid controlled, off‑line; pre-opened to dissipate returning high‑pressure waves and relieve overpressure
• Actuator design: Double chamber with protected, isolated diaphragm
• Optional components: Mechanical flow stem; V‑Port throttling plug; valve position indication, limit switches, position transmitters
• Flow path: Obstacle‑free / semi‑straight flow path
• Serviceability: In‑line serviceable for easy maintenance
• Performance: Wide flow range, high stability and accuracy, excellent anti‑cavitation resistance, drip‑tight closing
• Certifications: EN‑1074, NSF/ANSI 61‑372, WRAS, AS 5081 (and other regional standards)
• Typical sectors: Waterworks, irrigation, pumping stations, surge protection systems