Ralston Logo Ralston Instruments Made In the USA

Block and Bleed Valves

Keep a calibration system pressurized with a fluid or gas while venting the pressure from the device being calibrated

Block and Bleed Valves

Select a model for more information

Model End 1 End 2 Block Valve Vent Valve Material Working Pressure
QTHA-BLB0-1F-1F 1/8" Female NPT 1/8" Female NPT Yes Yes Brass 3000 PSI
QTHA-BLB0-2F-2F 1/4" Female NPT 1/4" Female NPT Yes Yes Brass 3000 PSI
QTHA-BLB0-HC Male Quick-test Female Quick-test Yes Yes Brass 3000 PSI
QTHA-BLB0-HH Male Quick-test Male Quick-test Yes Yes Brass 3000 PSI
QTHA-BLS0-2F-2F 1/4" Female NPT 1/4" Female NPT Yes Yes Brass 3000 PSI
QTHA-BLS0-HC Male Quick-test Female Quick-test Yes Yes Stainless Steel 5000 PSI
QTHA-BLS0-HH Male Quick-test Male Quick-test Yes Yes Stainless Steel 5000 PSI