Pressure Reducing Valves

BiS Wells offer a comprehensive range of pressure reducing valves, also known as pressure regulators. These valves control a determined outlet pressure from any given inlet pressure within a certain range.

We offer three main types of pressure reducing valve; spring loaded, internally dome loaded and externally dome loaded. Depending on pressure, flow and physical size will determine which type of regulator is most suited to your application.

Our pressure reducing valves can handle inlet pressures up to 7,250 PSI and control outlet pressures from as little as 0.75 PSI through to 6,000 PSI. Valves are offered in Aluminium Alloy as standard but can be manufactured from Stainless Steel, Brass and Aluminium Bronze.

Most of our pressure reducing valves are suitable for both pneumatic and hydraulic applications, please see our overview datasheets for suitability. As standard valves are offered with Nitrile or Viton seals however please contact us for medium compatibility as other elastomers can be offered.

All our pressure reducing valves can be manufactured specially for Oxygen use, please contact us for more information.

Product Datasheets

Pressure Reducing Valves Overview Datasheet

Data Sheets and Installation Drawings

A9, A10, A11 & A12 Spring Loaded Regulators. Up to 6,000 PSI. 0.09 Cv

A15, A16 & A17 Spring Loaded Regulators. Up to 4,500 PSI. 0.6 Cv

A20 Spring Loaded Regulators. Up to 1,000 PSI. 2.0 Cv

A30 Spring Loaded Regulators. Up to 1,000 PSI. 5.0 Cv

A100 & A101 Dome Loaded Regulators 1/2″ Ports. Up to 1,000 Psi. Cv 1.6

A120 & A121 Dome Loaded Regulators. 1-1/2″ Ports. Up to 1,000 PSI. Cv 6.5

A130 & A131. Dome Loaded Regulators. 3″ Ports. Up to 1,000 PSI. Cv 30

A200 & A201 Dome Loaded Regulators. 3/8″ Ports. Up to 6,000 PSI. Cv 0.6 

A210 & A211 Dome Loaded Regulators. 3/4″ Ports. Up to 6,000 PSI. Cv 1.9 

A212 Dome Loaded Regulators. 1″ Ports. Up to 7,250 PSI. Cv 1.9 

A220 & A221 Dome Loaded Regulators. 1-1/2″ Ports Up to 4,500 PSI. Cv 6.2 

Installation Operation and Maintenance Manuals

General Instructions IOM – Sprung Loaded Regulators

General Instructions IOM – Dome Loaded Regulators

A9 & A10 Service Instructions

A11 & A12 Service Instructions

A200 & A201 Service Instructions

A210 & A211 Service Instructions

A220 & A221 Service Instructions


+44 1202 851462

BiS Wells Ltd
Units 17-23 Kingfisher Park, Collingwood Road,
West Moors, Wimborne, Dorset, BH21 6US

Opening hours:
Monday to Thursday: 08:00 – 16:30
Friday: 08:00 – 13:00
Saturday and Sunday: Closed