The Ametek T-965 and T-975 are portable pneumatic hand pumps designed for generating both pressure and vacuum in calibration applications. A simple shuttle valve allows easy switching between pressure and vacuum modes without disconnecting the device under test.

The T-965 covers -0.85 to 2 bar (-25 inHg to 30 psi), ideal for lower-pressure applications. The T-975 extends from -0.91 to 40 bar (-27 inHg to 580 psi) for higher-pressure requirements. Both models feature a built-in vernier valve for fine adjustment with sensitivity down to 0.01 psi, enabling precise pressure setting. An adjustable stroke limits pressure per stroke to reduce overpressure risk.

Dual pressure output ports accommodate reference and test instruments simultaneously. The protected shuttle valve prevents accidental actuation while pressurized. All connections feature both metric and imperial threads for compatibility with international standards.

CPF versions (T-965-CPF, T-975-CPF) include Crystal Pressure Fittings that create leak-free seals without tools or thread tape. These fittings incorporate a self-venting weep hole for safe disconnection from pressurized systems. CPF kits include a 1-meter hose and adapters for 1/4" FPT, 3/8" BSPM, and 5/16" SAEM connections.

The pump and indicator are separate systems, allowing field replacement or local recalibration without returning the complete system to the factory. JOFRA pressure calibrators are available as individual indicators or complete ready-to-use systems in carrying cases including pump, hose, fittings, batteries, test leads, and NIST-traceable calibration certificate.

Constructed from anodized aluminum, brass, and stainless steel with nitrile seals, the T-965/T-975 are suitable for laboratory and field calibration of pressure gauges, transmitters, transducers, and switches.

Features

• Combined pressure and vacuum generation in one unit
• T-965: -0.85 to 2 bar (-25 inHg to 30 psi)
• T-975: -0.91 to 40 bar (-27 inHg to 580 psi)
• Shuttle valve for easy pressure/vacuum switching
• Built-in vernier fine adjustment - 0.01 psi sensitivity
• Dual pressure output ports for reference and test
• Adjustable stroke for overpressure protection
• Metric and imperial threads on all connections
• CPF versions feature tool-free leak-proof fittings
• Separate pump and indicator for easy maintenance
• Compatible with DPC-500, APC, CPC, and IPI calibrators
• Complete calibration systems available with carrying case