CHASE provides our customers with a friendly, responsive point of contact to source your Bailey 480/485/490 relief valve and parts. We have a broad range of capabilities and bring a wealth of experience and additional value. This means we can supply spare parts or complete products with competitive pricing and delivery. Please complete the form at the bottom of this page or send your RFQ to baileybirkett@chaseint.co.uk.
Bailey produce a wide range of dependable pressure reducing valves. They independently and without intervention monitor the supply pressure and automatically deliver a consistent reduced pressure for the operator.
CHASE has supplied Bailey Birkett safety valves for many years. We have a close working relationship with Bailey Birkett manufacturers, Emerson.
Customers use the Bailey range of pressure reducing valves throughout the world on a huge array of applications.
BAILEY 480/485/490 RELIEF VALVE

The 480/485/490 is a spring operated liquid relief valve available in all bronze, bronze with stainless steel trim or all stainless steel constructions.
Typically, these valves are for use on positive displacement pumps, for relief or bypass duties. The spring cartridge assembly can be supplied separately for use as an integral pump bypass relief valve.
- Cartridge type assembly which can be withdrawn from the body without disturbing the spring setting, and hence relieving pressure, allows the seating surfaces to be cleaned without the need to reset the valve.
- 480 is a bronze relief valve.
- 485 is bronze with a renewable stainless steel seat and disc.
- 490 is all stainless steel.
- Spindle normally fitted with an ‘O’ ring to protect the spring, particularly on corrosive duties.
TECHNICAL DATA
- Material: Bronze, stainless steel
- Sizes: ¾” to 3” (DN 20 to 80)
- Connections: Threaded
- Pressure range: 5 to 348 psig (0.35 to 24 barg)
- Temperature
- range: -4°F to 500°F (-20°C to 260°C)