The Ralston Instruments QTHA-FRS0 is a male Quick-Test x 5/16"-24 UNF male pressure 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

The Ralston QTHA-FRS0 allows you to directly connect a finger-tight, self-venting Ralston Quick-Test hose to a transmitter or gauge valve bleeder screw.
An integrated O-ring seal and metal to metal seat provide a secure and reliable, leak-free connection to 345 bar / 5,000psi.
Hardened stainless steel construction guarantees a tough, resilient adapter that 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.

Choose the appropriate DP transmitter adapter for your application

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.

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