The A27H spring-loaded external thread safety valve with a wrench is a spring-loaded fully open safety valve equipped with a manual testing wrench. When the system pressure exceeds the set value, the valve quickly opens and releases a large amount of medium; Automatically shut down after the pressure returns to normal. The "H" represents that the sealing surface is made of alloy steel, and the "external thread" provides a convenient connection method. The manual wrench can be used for regular manual opening tests to verify the flexibility of the valve action mechanism and prevent the valve disc from sticking and getting stuck due to long-term stillness. It is an important practical design to ensure that the safety valve can reliably operate in emergency situations. Mainly installed in safety relief ports of pressure systems such as small steam boilers, pressure vessels, air compressor storage tanks, gas pipelines, and thermal energy equipment. It is particularly suitable for situations that require regular manual functional testing to ensure long-term backup reliability, and is a key pressure relief protection device to ensure the safe operation of industrial and public facilities.

A27H Wrench-operated Spring Loaded Safety Valve with Male Thread Product Diagram

Features

1. Manual testing wrench

The top of the valve is equipped with a wrench, which can be manually lifted and tested regularly to force the valve disc to slightly lift and check whether its movement is flexible, ensuring reliable opening in emergency situations. This is an important maintenance and inspection function.

2. Spring fully open structure

When the pressure exceeds the set pressure, the valve disc quickly rises to the fully open height, with a large discharge area and strong discharge capacity (displacement), suitable for steam, gas or situations requiring rapid and large pressure relief.

3. External thread connection, easy to install

The inlet end adopts standard external threads (such as G thread, NPT thread), with a compact structure that can be directly screwed into the interface of equipment or pipelines. It is easy to install, especially suitable for small pressure vessels or pipeline systems.

4. Alloy steel sealing surface ("H" type)

The sealing surface of the valve disc and seat is made of alloy steel material with high hardness, wear resistance, high temperature resistance, and erosion resistance. The sealing performance is reliable and the service life is long.

5. Compact structure and reliable performanceA compact design that integrates a wrench and a spring adjustment mechanism. The spring has been precisely calibrated, with a small opening and closing pressure difference, good repeatability, and stable and reliable action.