The Ralston Instruments QTHA-2MB0 is a male Quick-Test x 1/4" male NPT pressure calibration adapter.
Once installed, the QTHA-2MB0 allows you to directly attach a finger-tight, self-venting Ralston Quick-Test hose for testing, calibrating or sampling.
An integrated O-ring seal provides secure and reliable, leak-free connections to 345 bar / 5,000psi without tools or thread tape.

The QTHA-2MB0 adapts any 1/4" female NPT port to a male Ralston Quick-Test connection.
It saves valuable time in the field when used with hand pumps, pressure references, transmitters or any device under test that requires frequent connections.
The QTHA-2MB0 is part of Ralston's Quick-Test system of pressure hoses and adapters, which offers a universal range of direct connections to virtually any device.
The QTHA-2MB1 model with integrated check-valve lets you perform pressure tests on live systems to 200 bar / 3,000psi without the need for a separate valve.
The QTHA-2MBL model features a 90° elbow to help solve gauge positioning or hose access issues.

Choose the appropriate NPT adapter for your application

Industrial Applications of Ralston NPT Quick-Test Adapters

Ralston NPT adapters can be used across a wide range of applications including gas sampling, pressure calibration, pressure reading and testing.
With high-quality products, Ralston strive to address critical issues such as vibration, air-tight sealing, corrosion, thermal shock, installation and compliance with industry standards.

Advantages of Ralston NPT Quick-Test Adapters

• Quick-Test adapters connect, tighten and disconnect without a wrench
• Pressure-tight, leak-free, O-ring seal requires only hand tightening
• Self-venting mechanism provides safe disconnection under pressure
• Available in a wide range of NPT thread sizes
  
• Available with or without an integrated check-valve
• 100% brass or stainless steel test construction resists corrosion and heavy-duty use

Beyond NPT adapters, a comprehensive range of interchangeable Ralston Quick-Test adapters and Quick-Test hoses provide connections for almost any pressure testing application.