ECONOMEET

Automatic Shutoff Valves

Air Operated Normally Closed - PVC Standard

Advantages:

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 (PVC coated stainless steel) 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 ther 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" AND 3/4" BSR VALVE SPECIFICATIONS**
CV	NPT or BSP	Inlet and Outlet Maximum working pressure* at given temp.		Model Numbers
		@ 77 F (25&degree;C)	@ 140 F (60&degree;C)
3.0	1/2	150 PSI 10 BAR	40 PSI 2,7 BAR	BSR050V (Viton Seals) BSR050B (Buna-N Seals)
8.0	3/4	150 PSI 10 BAR	40 PSI 2,7 BAR	BSR075V (Viton Seals) BSR075B (Buna-N Seals)