» Fisher™

Regulators

Genuine Fisher™ pressure regulators and OEM spare parts — pressure-reducing, backpressure & relief, slam-shut and steam — backed by application-engineering support and shipped from our Orlando, FL warehouse.

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What is a pressure regulator?

Self-operated pressure control

A pressure regulator is a self-operated final-control device: it holds a set pressure on its own, with no external signal or power. Every regulator works through three essential elements — a restricting element (plug and orifice), a measuring element (the diaphragm that senses the pressure) and a loading element (the spring or pilot that sets the target). The sensed pressure works against the loading element, and the regulator opens or closes to hold the setpoint as flow and inlet pressure change.

Direct-operated regulators are simple and fast; pilot-operated regulators add accuracy and capacity for demanding service. A pressure-reducing regulator controls the downstream pressure; a backpressure / relief regulator controls the upstream pressure and protects against overpressure — and slam-shut devices add a fast safety cutoff.

Reference: the Fisher™ Regulator Technical Handbook — available in our Technical Library.

The line

Fisher™ regulator families

The Fisher™ regulator types we supply and support. Tell us the duty or the serial number — we'll quote the right regulator or parts.

Pressure reducing

Pressure Reducing Regulators

Hold a precise reduced (downstream) pressure as flow and inlet pressure change — for gas, liquid and air service (e.g. Fisher™ 627).

Backpressure · Relief

Back Pressure Regulators

Control upstream pressure and limit pressure buildup, and provide relief, in liquid, gas, air and steam service (e.g. Fisher™ MR98).

Overpressure protection

Slam Shut Devices

Manual or automatic slam-shut and overpressure-protection devices that rapidly cut gas flow on an over- or under-pressure event (e.g. Fisher™ EZH).

Steam

Steam Pressure Regulators

Steam pressure-reducing regulators for reliable, efficient pressure control across steam distribution systems (e.g. Fisher™ 92B).

More Fisher™ Regulators Products

Airset Regulators

Airsets deliver reliable, accurate operation across a wide variety of applications, with Smart Bleed™ technology available.

Tank Blanketing Regulators

Accurate tank-pressure control keeps moisture and contaminants out, reduces product loss and prevents toxic venting — fit-for-purpose for normal and unexpected pressure changes in storage tanks.

Steam Regulators

Reliable, efficient pressure reduction throughout steam distribution systems.

Regulator Accessories

Regulator pilots, restrictors, filters, hoses, gauges and more to complete the hardware needs of any installation.

Natural Gas Stations & Skids

Pre-fabricated pressure-reducing stations designed to your specifications and built to order.

Natural Gas Odorant Injection

Zero-emissions odorization with simplified maintenance (Type D0200) — no external energy or electricity required.

Selecting a regulator

A model number isn't enough

Picking the right regulator comes down to a handful of things. Give us as many as you can and our application engineers do the rest — narrowing by setpoint, checking the inlet rating and confirming the regulator will open and hold under your conditions.

We'll also pick the right style: direct-operated for simple, fast control, or pilot-operated for higher accuracy and capacity.

Tell us your conditions → Quick Selection Guide (PDF) ↓

1 Application & fluid Air, steam, fuel gas, tank blanketing, process chemicals, liquids or sanitary service.

2 Outlet pressure (setpoint) The reduced downstream pressure to hold — the control pressure range.

3 Maximum inlet pressure The highest upstream pressure — it must not exceed the product rating.

4 Flow / capacity The maximum flow the regulator must pass at your conditions.

5 Accuracy required How tightly the setpoint must be held (droop / tolerance).

6 Body & pipe size A body size at or below your pipeline size, with your end connections.

7 Minimum differential pressure Enough inlet-to-outlet difference to fully open the main valve.

By application

Regulators for the services you run

Whatever the fluid, tell us the duty and we'll match a Fisher™ regulator to it.

» Air & nitrogen Instrument and utility air, nitrogen supply.

» Steam Steam distribution and pressure reduction.

» Fuel gas Burner, boiler and furnace fuel-gas supply.

» Tank blanketing Vapor-space pressure control and vapor recovery.

» Process chemicals Corrosive and demanding chemical service.

» Liquids Liquid pressure control and relief.

» Sanitary Hygienic / sanitary process service.

Genuine OEM

Genuine Fisher™ regulator spare parts

A regulator drifts off setpoint when its soft parts wear — a hardened diaphragm, a tired spring, a worn seat. We supply genuine OEM diaphragms, springs, seat rings, discs, restrictors, O-rings and pilot parts so your regulators hold pressure and protect the system. A will-fit diaphragm or spring can quietly shift the setpoint and the relief behavior; genuine parts protect them.

Identify my parts → Fisher™ Parts Store ↗

Send us a regulator serial number, model or your inlet/outlet conditions and our team will identify and quote the right Fisher™ regulator or parts.

+1 866-700-9858 Contact us

Questions

Regulator FAQ

Are these genuine Fisher™ regulators and parts?

Yes. We supply genuine OEM Fisher™ regulators and spare parts — no will-fit or look-alike components.

Can you supply just the spare parts — diaphragms, springs, seats?

Yes. Spare parts are our core: diaphragms, springs, seat rings, discs, restrictors, O-rings and pilot parts to keep installed regulators on setpoint.

Direct-operated or pilot-operated — which do I need?

Direct-operated regulators are simple and fast for moderate accuracy; pilot-operated regulators add accuracy and capacity for demanding or high-flow service. Tell us the duty and we will match it.

Pressure reducing or backpressure?

A pressure-reducing regulator controls the downstream (reduced) pressure; a backpressure or relief regulator controls the upstream pressure and limits buildup. We supply both.

Do you handle overpressure protection / slam-shut?

Yes — slam-shut and integrated overpressure-protection devices that cut gas flow fast on an over- or under-pressure event.

Can you identify the regulator from its serial number?

Send us the regulator model or serial number and our team will identify it and the parts you need.

Resources & tools

Select it, spec it, look it up

The Fisher™ regulator catalog, brochures and selection guides — plus the tools you need to spec and support a regulator.

Online handbook

Regulator Technical Handbook

The full Fisher™ regulator reference — selection, sizing and application — as an online catalog.

Read the handbook →

Catalog

Industrial Regulators Catalog (PDF)

Fisher™ industrial regulators across pressure reducing, back pressure, relief, tank blanketing and more.

Download PDF →

Download

Natural Gas Industry Solutions (PDF)

Regulators and control for the natural-gas industry — wellhead, gathering, transmission, distribution and stations.

Download PDF →

Selection guide

Industrial Regulators Quick Selection Guide (PDF)

Select the right regulator by application — pressure range, accuracy, body size and inlet ratings.

Download PDF →

Free tool

Flow unit conversion

Convert pressure, temperature and flow units — the conversion tab of our Valve Flow calculator.

Open conversion →

Need a Fisher™ regulator or parts?

Send us the serial number or model — genuine OEM, shipped from our Orlando, FL warehouse.