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102-A series 

High flow - dome loaded

Pressure reducing regulator

General info

102-A Series - High flow - dome loaded regulator

Presreg Valve's 102-A series is a dome loaded, downstream pressure reducing regulator.  It’s simplistic, proven design and rugged construction help give it excellent reliability and performance over a long service life. 

Oxygen compatibility is offered with the aluminium bronze material option.   Additional porting, and dome loading options make this regulator a versatile solution for many applications.

Bespoke material and porting configurations can also be supplied.   Spares & service kits available.

Features and benefits

- Suitable for liquid or gas service

- Wide outlet pressure range, fine control of outlet pressure over the whole range

- Reliable, time proven design

- Modular construction allows easy servicing

- Material options available for controlling most medias

- Port size options available, bespoke sizes possible - contact office

- The balanced main valve will ensure steady outlet pressure, even with a varying inlet pressure. 

- Inlet line loading option, no need for a pilot pressure source to load dome

Common applications

- Commonly used for Oxygen service, popular choice for hyperbaric chambers. 

- Perfect solution when high flow rate and a wide range of outlet pressures are required. 


Panel mounting details

Maximum panel thickness:  5.0 mm


Use the tool below to identify the type of spares kit required, then contact the sales office, quoting the names of the spares kits required and the serial number of the regulator.

The sales office will then provide a spares kit part number and price.


102-A Series – Available spares kits - Hover over a option below to highlight the parts supplied in the kit:

The 100 Series has a modular design, meaning the main valve sub assembly can be replaced without removing the regulator from the line.

ALWAYS refer to operating and maintenance instructions before carrying out any maintenance


Factory servicing is available on request.

Contact sales office with serial number for details and price.


Please contact office if you require any additional information. 

Soft seals spares kit

Main valve sub assembly



Click the links below to download documents




Additional document downloads


Click on a link to download a file. 


Please contact office if you require any additional information.  


General assembly drawing

Operating & Maintenance instructions

List of available spares

3D STP Model

PRESREG Valves product brochure

- Use tool to generate part number

- Contact sales office with part number for a price

- Use tool to generate part number

- Contact sales office with part number for a price

Ordering info

Use the tool below to generate a part number. 

Contact the sales office with part number for prices.

We are happy to offer assistance and advice on generating part numbers and advising the right regulator for the right application.  

Contact the sales office for more information.  Contact Us.

102-A series - ordering info tab - part number generator.png

The following features are standard on all models:

-  Maximum inlet pressure:  420 bar

-  Spring loaded

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