Air Operated Normally Closed - PVC or Natural Polypro suitable for Vacuum through 150 PSI
Advantages:
No pressure differential required.
Max. inlet and/or outlet pressure 150 PSI.
Compact - requires minimum space.
Long dependable cycle life.
Low pressure drop with high flow rates.
Non-sticking design with bubble-tight sealing.
Isolated spring is not in the liquid.
Easy to install in any position with 1/4-20 mounting holes supplied.
Plast-O-Matic Series BSR 1/2" and 3/4" air operated normally closed valves are the answer for handling pure liquids, chemicals, acids, and caustics where economy is a prime concern, and where it is not necessary to visually see the position of the valve.
Design:
Series BSR automatic valves require 25 PSI of air pressure to open and are normally closed with a spring. The spring is not in the liquid. Double U-cup seals are used on the internal shaft for low friction and long cycle life. This, in conjunction with a poppet seat at the valve orifice, results in a non-sticking design. For mounting the valve securely, four 1/4-20 tapered holes are provided in the base of the body. There are no exposed metal screws or other hardware on the exterior of the 1/2" valve which allows for mounting in a sump.
Dimensions
Size
1/2"
3/4"
DIM
IN.
MM
IN.
MM
A
3-5/16
84.1
4-9/16
115.9
B
3
76.2
3-1/2
88.9
C
1-3/16
30.2
1-9/16
39.7
Specifications:
1/2" & 3/4" BSR VALVE SPECIFICATIONS
NPT or BSP
CV
Inlet and Outlet
Maximum working pressure* at given temp.
