Pilot Operated Stop Valves
BiS Wells offer a comprehensive range of Pilot operated stop valves. These valves control high pressure gasses and liquids using a low-pressure diaphragm piston.
We offer both 2 ported 2 position (2/2) and 3 ported 2 position (3/2) variants. 2 and 3 ported valves are offered in both balanced poppet and pressure biased configurations. As well as normally closed and normally open versions. 3 ported balanced poppet valves can be used in any ‘universal’ configuration. Depending on pressure, flow and your application will determine which product is best suited.
Our Pilot operated stop valves have a Maximum Working Pressure of up to 500 Bar (7,250 Psi). Valves are offered in Aluminium Alloy as standard but can be manufactured from Stainless Steel, Brass and Aluminium Bronze. Valves range from ¼” up to ¾” ports.
All our Pilot operated stop 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 elastomeric materials can be offered.
All our Pilot operated stop valves can be manufactured specially for Oxygen use, please contact us for more information.
Pilot Operated Stop Valves Overview Datasheet
Data Sheets and Installation Drawings
K38 Pilot Operated Stop Valve. 1/4″ and 3/8″ Ports. Up to 6,500 Psi. Cv 1.0
K39 & K39S Pilot Operated Stop Valve . 3/4″ Ports. Up to 6,500 Psi. Cv 2.1 & 3.0
K47 Pilot Operated Stop Valve . 1/4″ & 3/8″ Ports. Up to 6,000 Psi. Cv 0.06
K48 Pilot Operated Stop Valve . 1/4″ & 3/8″ Ports. Up to 6,000 Psi. Cv 0.15
K49 Pilot Operated Stop Valve . 1/4″ and 3/8″ Ports. Up to 4,500 Psi. Cv 1.2
K55 & K55S Pilot Operated Stop Valve . 1/2″ Ports. Up to 6,500 Psi. Cv 2.1 & 3.0
K65 Pilot Operated Stop Valve . 1/4″ and 3/8″ Ports. Up to 725 Psi. Cv 1.2
Coming Soon – Full range of installation drawings
Installation Operation and Maintenance Manuals
BiS Wells Ltd
Units 17-23 Kingfisher Park, Collingwood Road,
West Moors, Wimborne, Dorset, BH21 6US
Monday to Thursday: 08:00 – 16:30
Friday: 08:00 – 13:00
Saturday and Sunday: Closed