Ralston Instruments QTHP-5KPSIG-FL

Ralston Instruments QTHP-5KPSIG-FL Hydraulic Hand Pump – 5000 psi / 350 bar / 35 MPa, 1/4″ Male NPT.

The Ralston QTHP-5KPSIG-FL Hydraulic Hand Pump is a high-performance hand-operated pump designed for precise field pressure calibration. With a pressure capability of up to 5000 psi (35 MPa / 350 bar), it is ideal for generating hydraulic pressure for testing and calibrating pressure transmitters, sensors, and gauges. Its compact design, durable construction, and compatibility with Quick-test hoses make it a versatile tool in the field.

For a detailed guide on pressure calibration, see our article:
➡️ How to Calibrate a Pressure Transmitter Using a Loop Calibrator: Step-by-Step Guide for Accurate Pressure Measurement

Explore other related solutions in the
➡️ Pressure Measurement
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Key Features:

• Generates hydraulic pressure up to 5000 psi / 35 MPa

• Compact and portable for on-site calibration work

• Quick-test hose system for fast and leak-free connections

• Compatible with petroleum-based oils and water

• Smooth and precise pressure control with fine adjustment

• Constructed from anodized aluminum, brass, and stainless steel

• Ideal for use with Ralston’s Pressure FieldLab reference devices

Technical Specifications:

Pump Model: QTHP-5KPSIG-FL
Max Pressure: 5000 psi / 345 bar / 35 MPa
Process Connection: 1/4″ Male NPT
Reference Connection: None
Pressure Reference: Pressure FieldLab, 5000 psi
Media Compatibility: Petroleum-based oil, water
Seal Materials: Buna-N, Teflon
Fine Adjustment Resolution: 0 PSI / 0 mbar / 0.00 kPa
Material Construction: Anodized Aluminum, Brass, Stainless Steel
Weight: 46.9 oz / 2.93 lbs / 1.33 kg
Dimensions:

• Height: 5.7 in (14.48 cm)

• Width: 6 in (15.24 cm)

• Depth: 10.6 in (26.92 cm)

Included in the Package:

• (1) QTHP Hydraulic Hand Pump

• (1) Pressure Reference: FieldLab, 5000 psi (FLP1-GR-QF)

• (1) Process Connection: 1/4″ Male NPT x Male Quick-test (QTHA-2MB0)

• (1) Quick-test Hose: 6900 psi, 3 ft long (QTQT-HOS-3ft)

Ideal for:
Field technicians, calibration labs, and professionals requiring high-accuracy pressure calibration in oil & gas, manufacturing, utilities, and instrumentation.