Ralston calibration test pumps are portable, high-quality hand pumps for generating pneumatic pressure, hydraulic pressure, and vacuum. Designed for precision calibration and pressure testing in oil & gas, petrochemical, maritime, pharmaceutical, and aerospace industries.

Key Features:

• Hydraulic models reach 5,000 psi (QTHP) or 10,000 psi (XTHP) with balanced reservoir design

• Pneumatic scissor pumps (DCAP) reach 650 psi with pressure/vacuum switching capability

• Lightweight and extremely durable construction

• Easy disassembly and field repair with standard hand tools

• Quick-test adapters for leak-free, wrench-free connections

• Compatible with most liquids (hydraulic models)

• Ideal for transmitter calibration, switch testing, and unpowered field applications

The Ralston XTHP Hydraulic Pump, (1) 1/8" MNPT, (1) 1/4" MNPT Adapters, (2) 3ft Hose # XTHP-KIT4 is manufactured by Ralston Instruments. Valley Instrument Service is an authorized Ralston Instruments dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.

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XTHP Hydraulic Pump, (1) 1/8" MNPT, (1) 1/4" MNPT Adapters, (2) 3ft Hose

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