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.
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.
| 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 | |
| 1/2" & 3/4" BSR VALVE SPECIFICATIONS | |||||
|---|---|---|---|---|---|
| NPT or BSP | CV | Inlet and Outlet Maximum working pressure* at given temp. | Model Numbers | ||
| @ 77°F (25°C) | @ 140°F (60°C) | ||||
| 1/2" | 2.5 | 150 PSI 10 BAR | 40 PSI 2,7 BAR | BSR050V (Viton® Seals) BSR050B (Buna-N Seals) | |
| 3/4" | 5.0 | 150 PSI 10 BAR | 40 PSI 2,7 BAR | BSR075V (Viton® FKM Seals) BSR075B (Buna-N Seals) | |
Catalog BSR-1
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