The Ralston Instruments QTHA-FRS0 is a male Quick-Test x 5/16"-24 male UNF DP transmitter / gauge valve bleed port adapter.
The QTHA-FRS0 adapter is compatible with a range of differential pressure (DP) transmitters and block and bleed valves:

• Rosemount 2051 / 3051 series transmitter
• Yokogawa EJ series transmitter
• Anderson Greenwood M25 / M251 series block and bleed valves

Installed on a transmitter manifold or gauge valve, the Ralston QTHA-FRS0 allows you to directly connect a finger-tight, self-venting Ralston Quick-Test hose to the bleeder screw port.
An integrated O-ring seal and metal to metal seat provide a secure and reliable, leak-free connection to 345 bar / 5,000psi without tools or thread tape.
Hardened stainless steel construction guarantees a tough, resilient adapter that resists corrosion and copes easily with repeated tightening.
The QTHA-FRS0 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.

Ralston DP Transmitter Quick-Test Adapters
Differential pressure transmitters are used in almost every process industry to measure the flow of gas and liquids.
Calibration of these instruments is essential to ensure the pressure measurements and information they provide remains as accurate as possible.
Calibrating a DP transmitter using a pressure calibrator and pressure source often requires removing the device from service.
Ralston's range of DP transmitter / gauge valve adapters solves this issue by connecting directly through the vent plug or bleeder screw port.
This saves valuable time during the calibration set-up and allows the operator to equalise pressure, isolate, vent and re-pressurise the transmitter for calibration and testing without removing it from the process.

Alternative Ralston Male Quick-Test x 5/16"-24 Male UNF Adapters
QTHA-FRS0-SN adapter features a shorter connection thread for compatibility with Foxboro IDP10 / IDP15 / IDP31 / IDP32 / IMV25 series transmitters.
Find the correct DP transmitter 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