Plast-O-Matic Series BSR Balanced Air-Operated Shut-Off Valves 1/2″ – 3/4″
Plast-O-Matic Series BSR Balanced Air-Operated Shut-Off Valves 1/2" - 3/4"
https://www.watercareproducts.com.sg/shut-off-valves/plast-o-matic-engineering-valves-controls/air-operated-series-bsr_bsrm-compact-globe-style-air-operated-shut-off-valves