Globe valve MN-730

hydraulically-operatedpilot-operatedpressure sustaining

Overview
The MN-730 is a hydraulically operated pressure sustaining control valve that maintains a preset minimum upstream (back) pressure regardless of flow fluctuations or varying downstream pressure. It is an in-line, pilot-operated valve from the 700 Sigma Series, engineered for demanding waterworks and industrial/mining environments.

Design & operation
The valve features a hydrodynamic body for an unobstructed flow path and high modulation capacity in high differential pressure situations. Its oblique-pattern globe design and pilot control deliver stable performance with reduced cavitation and noise for heavy-duty applications.

Features & benefits

• Tamper-resistant design.
• Excellent anti-cavitation characteristics.
• High stability and control accuracy.
• Drip-tight sealing to minimize leakage.
• Obstacle-free flow path for efficient hydraulics.
• Modular design allowing easy addition of optional features.
• Optional V‑Port throttling plug for improved low-flow stability.

Actuator & maintenance

• Double-chamber unitized actuator removable as an integral unit for in-line serviceability.
• Protected diaphragm.
• Rapid response to sudden system changes.
• Simplified maintenance: actuator and seat assembly can be serviced as a single unit.

Applications

• Waterworks and municipal distribution networks.
• Mining and industrial systems requiring pressure retention under varying downstream conditions.
• High differential pressure installations where cavitation and noise must be minimized.

Technical specifications

• Model: MN-730
• Commercial denomination / Series: 700 Sigma Series
• Product type: Pressure sustaining valve (in-line), pilot-operated hydraulic control valve
• Pattern: Oblique-pattern globe valve
• Actuator: Double-chamber unitized actuator, removable as an integral unit
• Seat assembly: Unitized seat assembly (in-line serviceable)
• Flow path: Hydrodynamic, unobstructed
• Optional components: V‑Port throttling plug for low-flow stability
• Sealing: Drip-tight
• Protection: Tamper-resistant design; protected diaphragm
• Performance: Anti-cavitation properties, high stability and accuracy, rapid response
• Primary applications: Waterworks, municipal networks, mining and industrial applications
• Maintenance: In-line serviceability of actuator and seat assembly