Water pressure relief valve 73Q

for water systemsstainless steelductile iron

Description
Hydraulically operated, diaphragm-actuated quick pressure relief valve that relieves excessive system pressure when it rises above a pre-set value. It responds immediately and repeatably by opening fully and provides smooth, drip-tight closing.

Series / Identification
700 Sigma Series; Product code: 73Q

Key Features & Benefits

• Excellent anti-cavitation properties
• Wide flow range
• High stability and accuracy
• Drip-tight sealing
• Flexible design allowing easy addition of features
• Obstacle-free flow path
• Optional V-Port throttling plug — very stable at low flow
• High-quality materials
• In-line serviceable actuator for easy maintenance
• Certified to functional and drinking water standards: EN-1074, NSF/ANSI 61-372, WRAS, AS 5081

Double chamber design

• Moderated valve reaction
• Protected diaphragm
• Optional operation at very low pressure
• Moderated closing curve

Typical Applications

• Pressure-reducing systems — protection against pressure rise during sudden demand stoppage or failure
• Old pipe systems — installed at sensitive spots and line ends to protect against bursts during pressure surges

Technical Specifications

• Brand: BERMAD
• Model: 73Q
• Commercial denomination: 73Q (700 Sigma Series)
• Type: Quick Pressure Relief Valve (angle type)
• Operation: Hydraulically operated, diaphragm actuated
• Design: Double-chamber actuator option, obstacle-free flow path
• Optional: V-Port throttling plug for enhanced low-flow stability
• Serviceability: In-line serviceable actuator for easy maintenance
• Performance: Fast, repeatable opening on pressure rise; smooth drip-tight closing
• Applications: Waterworks, Irrigation, Buildings & Construction
• Certifications: EN-1074, NSF/ANSI 61-372, WRAS, AS 5081
• Internal reference / barcode: 29756