Bermad - Model 82 - High Sensitivity Pressure Reducing Pilot

This pilot integrates all principal functions of a 2-way control circuit in a single assembly. It is a high-sensitivity, direct-acting valve, actuated by a pressure-responsive diaphragm, which tends to reach equilibrium with the set spring force. When used in a pressure-reducing circuit, the pilot modulates closed as downstream pressure rises above the set point. An integral needle valve acts as an upstream flow restrictor as well as a closing speed control.

Features and Benefits

• Integral needle valve
• Differential pressure sensing (model #7)

Typical Application

• Modulating altitude control valves
• High-sensitivity pressure-reducing valves
• Low ΔP flow control valves (modified to differential sensing model #7)

Pressure Rating

• 16 bar

Working Temperature

• Water up to 60°C

Flow Factor

• Kv 1.0; Cv 1.2

Valve Size Range

• Small - Medium

Standard Materials:

Body & Cover: Brass

Diaphragm Covers: Fusion-bonded epoxy-coated Steel

Elastomers: NBR

Internals: Stainless Steel & Brass

Spring: Galvanized Steel

Optional Materials:

Metal Parts: Stainless Steel, Nickel Aluminum Bronze, Hastalloy

Elastomers: EPDM, FPM (Viton®)

Adjustment Range

Connections

Z - Upstream

A - Valve control chamber

C - Downstream

Sensing - For altitude control – still point at the reservoir bottom

For pressure reducing – to valve downstream

*Always recommended to refer to control diagram

Weight

• M1/M6 -10 Kg.
• M5 -11 Kg.
• M4 -19 Kg.
• M8 -22 Kg.