BERMAD 720 - User Manual

BERMAD Waterworks
Pressure Reducing
Valve
700 Series
Model 720
The Model 720 Pressure Reducing Valve is a hydraulically
operated, diaphragm actuated control valve that reduces
higher upstream pressure to lower constant downstream
$$$%;
upstream pressure.
Flow and leakage reduction
Cavitation damage protection
Throttling noise reduction
Burst protection
System maintenance savings
Features and Benefits
Line pressure driven – Independent operation
In-line serviceable – Easy maintenance
Double chamber design
Moderated valve reaction
Protected diaphragm
Flexible design – Easy addition of features
Variety of accessories – Perfect mission matching
"Y" or angle, wide body –}%'$
 –$$N
Stainless Steel raised seat – Cavitation damage resistant
Obstacle free, full bore – Uncompromising reliability
V-Port Throttling Plug –`NN;
Major Additional Features
(``– FP-720-UL
Solenoid control – 720-55
Check valve – 720-20
9"– 720-25
Proportional – 720-PD
Automatic regulation override – 720-09
High sensitivity pilot – 720-12
Emergency pressure reducing valve – 720-PD-59
Downstream over pressure guard – 720-48
Electrically selected multi-level setting – 720-45
=%$6;K6– 720-4T
Electronic pressure reducing valve – 728-03
See relevant BERMAD publications.

Summary

Operation

Engineer Specifications

Main Valve Specifications

Specifies the main valve's design, materials, and serviceability requirements.

Actuator Assembly Details

Details the actuator assembly's double-chamber design and removable unit construction.

Control System Composition

Outlines the 2-way pilot, needle valve, isolating cocks, and filter composition.

Quality Assurance Standards

Confirms manufacturer certification and valve compliance with drinking water standards.

Typical Applications

Typical Installation Diagram

Illustrates a typical installation setup for municipal pressure reduction systems.

Pressure Reducing Systems in High-Rise Buildings

Higher Zone Installation

Describes the recommended system setup for higher zones in high-rise buildings.

Lower Zone (Two-Stage) Installation

Details the two-stage system for lower zones with high differential pressure.

Technical Data

Dimensions and Weights

Provides physical dimensions and weight specifications for various valve sizes.

Flow Chart Analysis

Illustrates pressure loss characteristics across different flow rates and valve sizes.

Main Valve Specifications

Details main valve specs including pattern, size range, and end connections.

Control System Materials

Lists standard materials for control system components like tubing and fittings.

Pilot Valve Selection Guide

Offers guidance on selecting pilot valves based on size and pressure settings.

How to Order Guide

Explains the sequence for ordering valves with various features and specifications.

BERMAD 720 Specifications

General

Model	720
Type	Pressure Reducing Valve
Body Material	Ductile Iron
Pilot System	Hydraulic
End Connections	Flanged
Pressure Rating	16 bar
Materials	Ductile Iron, Stainless Steel
Control Options	Pressure Reducing, Pressure Sustaining, Flow Control
Operating Temperature Range	-10°C to 80°C
Compliance Standards	ISO
Sizes	2" - 12" (50mm - 300mm)
Connection Size Range	2" to 12" (50mm to 300mm)