Ralston Instruments, Inc. Datasheets for Industrial Valves

Valves are mechanical devices that control the flow and pressure of liquids, gases, and slurries within a system. They are also known as regulators and are used in a wide variety of applications. Valves vary greatly in size, design, function, and operation.
Industrial Valves: Learn more

Product Name Notes
Block & bleed valve - 1/8" female NPT inlet x 1/8" female NPT outlet, brass -- QTHA-BLB0-1F-1F QTHA-BLB0-1F-1F Block & bleed valve - 1/8" female NPT inlet x 1/8" female NPT outlet, brass Keep a calibration system pressurized with a fluid or gas while venting the pressure...
Block & bleed valve - 1/4" female NPT inlet x 1/4" female NPT outlet, brass -- QTHA-BLB0-2F-2F QTHA-BLB0-2F-2F Block & bleed valve - 1/4" female NPT inlet x 1/4" female NPT outlet, brass Keep a calibration system pressurized with a fluid or gas while venting the pressure...
Block & bleed valve - male Quick-test inlet x female Quick-test outlet, brass -- QTHA-BLB0-HC QTHA-BLB0-HC Block & bleed valve - male Quick-test inlet x female Quick-test outlet, brass Keep a calibration system pressurized with a fluid or gas while venting the pressure from the...
Block & bleed valve - male Quick-test inlet x male Quick-test outlet, brass -- QTHA-BLB0-HH QTHA-BLB0-HH Block & bleed valve - male Quick-test inlet x male Quick-test outlet, brass Keep a calibration system pressurized with a fluid or gas while venting the pressure from the...
Block & bleed valve - 1/4" female NPT inlet x 1/4" female NPT outlet, S.S. -- QTHA-BLS0-2F-2F QTHA-BLS0-2F-2F Block & bleed valve - 1/4" female NPT inlet x 1/4" female NPT outlet, S.S. Keep a calibration system pressurized with a fluid or gas while venting the pressure...
Block & bleed valve - male Quick-test inlet x male Quick-test outlet, S.S. -- QTHA-BLS0-HC QTHA-BLS0-HC Block & bleed valve - male Quick-test inlet x male Quick-test outlet, S.S. Keep a calibration system pressurized with a fluid or gas while venting the pressure from the...
Block & bleed valve - male Quick-test inlet x male Quick-test outlet, S.S. -- QTHA-BLS0-HH QTHA-BLS0-HH Block & bleed valve - male Quick-test inlet x male Quick-test outlet, S.S. Keep a calibration system pressurized with a fluid or gas while venting the pressure from the...
n-line fine adjust vernier piston - male Quick-test x female Quick-test, Stainless Steel -- QTHA-TEVR-HC-SS QTHA-TEVR-HC-SS n-line fine adjust vernier piston - male Quick-test x female Quick-test, Stainless Steel Connect one end to a Quick-test hose and the other to the process connection then turn...
In-line fine adjust vernier piston - male Quick-test x female Quick-test, brass -- QTHA-TEVR-HC QTHA-TEVR-HC In-line fine adjust vernier piston - male Quick-test x female Quick-test, brass Connect one end to a Quick-test hose and the other to the process connection then turn the...
In-line fine adjust - male Quick-test x male Quick-test, S.S. -- QTHA-TEVR-SS QTHA-TEVR-SS In-line fine adjust - male Quick-test x male Quick-test, S.S. Connect one end to a Quick-test hose and the other to the process connection then turn the knob to...
In-line fine adjust vernier piston - male Quick-test x male Quick-test, brass -- QTHA-TEVR QTHA-TEVR In-line fine adjust vernier piston - male Quick-test x male Quick-test, brass Connect one end to a Quick-test hose and the other to the process connection then turn the...
Male Quick-test x female Quick-test in-line vent valve, brass -- QTHA-TVLB-HC QTHA-TVLB-HC Male Quick-test x female Quick-test in-line vent valve, brass Use to slowly or quickly bleed pressure from a line after a calibration is complete Easily connect between the end...
Male Quck x male Quick-test in-line vent valve, brass -- QTHA-TVLB QTHA-TVLB Male Quck x male Quick-test in-line vent valve, brass Use to slowly or quickly bleed pressure from a line after a calibration is complete Easily connect between the end...
Male Quick-test x female Quick-test in-line vent valve, S.S. -- QTHA-TVLS-HC QTHA-TVLS-HC Male Quick-test x female Quick-test in-line vent valve, S.S. Use to slowly or quickly bleed pressure from a line after a calibration is complete Easily connect between the end...
Male Quick-test x male Quick-test in-line vent valve, S.S. -- QTHA-TVLS QTHA-TVLS Male Quick-test x male Quick-test in-line vent valve, S.S. Use to slowly or quickly bleed pressure from a line after a calibration is complete Easily connect between the end...