Fisher 92B Pressure Reducing Valve UK & Ireland

Fisher 92B Pressure Reducing Valve

The Fisher™ 92B Pressure Reducing Valve is the standard steam valve for the industry. It is a self-powered control valve. Type 92B is designed to provide decades of continuous service. It can withstand dirty operating environments while providing accurate and stable pressure control.

Type 92B is applied as the main Pressure Reducing Valve in industrial process heating applications such as heat exchangers, evaporators, digesters and reactors. Commercial applications include Pressure Reducing Valves for meter runs found in district energy systems, hot water heat exchangers, absorption chillers and boiler de-aerator tanks.

The Fisher 92B is rated for inlet pressure up to 300 PSIG / 20.7 bar and inlet temperatures to 600°F / 316°C. The maximum controlled outlet pressure is 250 PSIG / 17.2 bar. A large actuator and heavy main spring ensure high accuracy and stability over its entire steam flow range.

Features

Extended Diaphragm Service Life

Two-ply construction and dual flex points increase cycle life compared to conventional designs. Stainless steel material ensures satisfactory operation at high steam temperatures.

Resilient Seats

Valve seats are individually lapped for tight shutoff. Bevelled seats ensure easy in-line lapping. Plug and valve seats are constructed of hardened stainless steel which reduces wire drawing in wet steam applications.

Standard ANSI Face-to-Face

NPT, CL125 FF, CL150 RF, CL250 RF and CL300 RF end connections are ANSI standard face-to-face dimensions. The Type 92B main valves are also available with PN 16/25/40 RF end connections.

Bellows Stem Guide

Pilot bellows reduce sticking from scale build-up due to boiler carryover.

Elevated Actuator

Plugging from scale and rust is reduced as condensate will not pool in
critical areas.

Two-Path Control

Downstream pressure registers under the main valve and pilot diaphragms improve response time.

Double Post Stem Guide

Top and bottom seat guides with Inconel® bushings eliminate lateral plug instability and premature stem wear.

Inconel® is a mark owned by Special Metals Corporation.

Technical Data

Pressure Registration External

Max Temperature 353° to 600°F / 178° to 316°C

Body Sizes NPS 1 / 1.5 / 2 / 3 / 4 | DN 25 / 40 / 50 / 80 / 100

End Connections NPT / BSPT / CL125FF / CL150RF / CL250RF / CL300RF / PN 16/25/40

Maximum Inlet Pressure 300 PSIG / 20.7 bar

Maximum Outlet Pressure 250 PSIG / 17.2 bar

Spring Ranges 2 to 250 PSIG / 0.138 to 17.2 bar

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