Diaphragm valve MN-750-65

hydraulically-operatedfloatlevel control

Overview
Hydraulically operated control valve for automatic reservoir filling and level management in response to a Bi‑Level electric float switch. The float switch signals opening at a preset low level and closing at a preset high level.

Features & Benefits

• Excellent anti‑cavitation characteristics
• Wide flow range for varied system demands
• High stability and control accuracy
• Drip‑tight sealing for leak prevention

Double chamber design

• Moderated valve reaction for smooth operation
• Protected diaphragm to reduce wear
• Optional operation at very low inlet pressures
• Moderated closing curve to limit hydraulic shock

Flexible design & maintenance

• Modular design allows easy addition of features
• Obstacle‑free flow path for unobstructed seat area
• V‑Port throttling plug (optional) — very stable at low flow
• In‑line serviceable for straightforward maintenance

Certifications & compliance

• Certified to functional and drinking‑water standards: EN‑1074, NSF/ANSI 61‑372, WRAS, AS 5081 and others

Typical applications

• Reservoir level control
• Bi‑Level control for controlled water renewal and quiet operation
• Potable water systems, fire protection and grey water applications
• Safety valve function in tank filling systems

How it operates
The valve is pilot‑controlled and operates automatically in response to the Bi‑Level electric float switch: it opens at the preset low reservoir level to allow filling and closes at the preset high level to stop filling.

Technical characteristics / specifications

• Model: 750‑65
• Series: 700 Sigma Series
• Product type: Level control valve, hydraulically operated
• Control input: Bi‑Level electric float switch (open at preset low level, close at preset high level)
• Actuator design: Double chamber (moderated reaction, moderated closing curve)
• Diaphragm: Protected/isolated diaphragm options
• Optional features: V‑Port throttling plug for stable low‑flow control
• Flow path: Obstacle‑free flow pass
• Maintenance: In‑line serviceable
• Cavitation: Excellent anti‑cavitation properties
• Sealing: Drip‑tight sealing
• Performance: Wide flow range; high stability and accuracy
• Low‑pressure capability: Optional operation at very low pressure
• Materials: High‑quality materials suitable for potable water
• Certifications: EN‑1074, NSF/ANSI 61‑372, WRAS, AS 5081 (and other drinking‑water/functionality standards)