What Are The Key Points To Know When Installing A 3-way Threaded Ball Valve?

3 Way Threaded Ball Valve feature a metal-to-metal sealing pair (i.e., the valve seat and ball sealing surfaces). Ball valves are available in floating and fixed ball configurations, and connection options include flanges, welding, and threads.

A hard-seal ball valve consists of a ball, seat, and body. The seat is made of metal. Seals, a retaining ring, and disc springs are positioned between the seat and body. This product significantly expands the range of applications for ball valves, allowing them to be used in high-temperature, high-pressure environments, or in environments where the media contains particulate matter.

Key Construction and Installation Points

1) The installation position, height, and inlet and outlet directions must comply with design requirements, and connections must be secure and tight.

2) The handles of all manual valves installed on insulated pipes must not be facing downward.

3) Before installation, the valve must be visually inspected, and the valve nameplate must comply with the current national standard "General Valve Marking," GB 12220. Valves with an operating pressure greater than 1.0 MPa and serving as shutoff valves on main pipelines must undergo strength and tightness tests before installation and are permitted for use only after passing the tests. During the strength test, the test pressure must be 1.5 times the nominal pressure and the duration must be no less than 5 minutes. The valve body and packing must show no leakage to qualify. During the tightness test, the test pressure must be 1.1 times the nominal pressure and the duration must meet the requirements of GB 50243. The valve disc sealing surface must show no leakage to qualify.

4) Install a gasket between the valve flange and the pipeline flange according to the pipeline design requirements.

5) For ball valves with a transmission mechanism, install them according to the product instructions.