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 pressure 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.
Soild brass construction resists corrosion, tough conditions and everyday wear and tear.

The Ralston QTHA-2MB0 adapter converts 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.

Alternative Ralston Male Quick-Test x 1/4" Male NPT Adapters
QTHA-2MS0 stainless steel adapter suits aggressive media or harsh applications.
QTHA-2MS0-QD stainless steel quick-connect adapter uses a pressure-assisted, o-ring seal to make a finger-tight, leak-free, male to female NPT connection without tools or thread tape.
QTHA-2MB1 brass and QTHA-2MS1 stainless steel adapters feature integrated check-valves for pressure tests on live systems to 200 bar / 3,000psi without the need for a separate valve.
QTHA-2MBL brass and QTHA-2MSL stainless steel adapters features a 90° elbow to address gauge positioning or hose access issues.
Find the correct NPT adapter for your application.
If you need to connect to a diverse range of fittings, Transtek's pressure calibration hose and adapter kits cover most options and help simplify your work.

Suitable Applications for Ralston Quick-Test Adapters
Ralston adapters can be used across a wide variety of industrial or laboratory applications including gas sampling, pressure calibration, pressure reading and testing.
Ralston's high quality products strive to address critical issues such as vibration, air-tight sealing, corrosion, thermal shock, installation and compliance with industry standards.

Advantages of the Ralston Quick-Test System
Ralston's comprehensive range of interchangeable Quick-Test adapters and Quick-Test hoses provide connections for almost any pressure testing application.

• Quick-Test adapters and hoses connect, tighten and disconnect without a wrench
• Pressure-tight, leak-free, O-ring seals require only hand tightening
• Self-venting mechanisms allow safe disconnection under pressure
• The widest range of connections and size options
  
• Available with or without integrated check-valves
• 100% brass or stainless steel test construction resists corrosion and heavy-duty use
• Compatible with all major pressure media, applications and connection standards