Trekre Valve Valve Technical knowledge

The principle of pneumatic ball valve？The working principle of the pneumatic ball valve is to make the valve flow or block by rotating the valve core. The pneumatic ball valve is easy to switch and small in size. The ball...

Types of ball valves？A ball valve is a type of isolation valve and is the most commonly used valve in industry due to its excellent operating characteristics. Ball valves can be welded, threaded, and flanged, and are available in a...

Selecting a corrosion-resistant valve requires more than choosing a stainless-steel grade or a fluoropolymer lining. The chemical composition of the process fluid, its concentration, operating temperature, pressure, flow conditions and the materials exposed to the medium all influence valve reliability....

Wafer and flanged check valves are often compared by installation length, weight and purchase cost. However, the connection style alone does not determine which check valve is better. Internal construction, cracking pressure, pressure loss, reverse-flow response and pipeline transients are...

What is a metal hard seal butterfly valve,Metal hard seal butterfly valve is mainly composed of valve body, butterfly plate, valve shaft, valve body sealing ring, butterfly plate sealing ring, shaft sleeve, self-lubricating bearing and driving device. The high performance...

A pneumatic valve actuator converts compressed-air energy into mechanical motion to operate a valve. Rotary actuators operate quarter-turn valves such as ball and butterfly valves, while linear actuators operate valves that require straight-line stem travel. The correct actuator depends on...

Technical requirements for pipeline valves Historical standards notice: This article discusses GB/T 19672-2005, ISO 14313:1999 and API 6D:2002. It is a historical overview, not a current purchasing specification. Have the responsible project engineer confirm the applicable standard, edition and selected...

Choosing and Using a Fluoropolymer-Lined Butterfly Valve A lined butterfly valve uses a rotating disc and a polymer-lined wetted arrangement. The metal shell and the lining have different roles: the shell provides the structural body, while the selected lining separates...

Analysis of forged and cast valves Forged and cast describe manufacturing routes, not fixed nominal-size or pressure-class limits. Both manufacturing routes are used across different valve designs and duty ranges. Select the construction using the actual size, pressure-temperature rating, material...

The purpose of maintenance during the operation of pipeline valves is to ensure that the valves are in a state of perennial cleanliness, good lubrication, complete valves and normal operation.How to maintain pipeline valves in use ★ cleaning of valves...

Large diameter two-way pressure butterfly valve is a top mounted metal hard seal butterfly valve with convenient installation and online maintenance. When the valve needs to be repaired, it is not necessary to remove it from the pipeline. As long...

Gate valve introduction-The opening and closing part of the gate valve is the gate. The movement direction of the gate valve is perpendicular to the fluid direction. The gate valve can only be fully opened and fully closed, and cannot...

ball valve characteristic Knowledge of ball valves 1; wear-resisting; Since the valve core of the hard sealed ball valve is alloy steel spray welding and the sealing ring is alloy steel surfacing, the hard sealed ball valve will not cause...

Paint and coating selection of valves In many cases, paint on new valves is only a temporary coating designed to delay external corrosion during valve storage or before the final paint or coating is applied to the entire piping system...

How the breathing valve works-Atmospheric and low pressure storage tanks are common equipment in process industry. During the use of atmospheric and low-pressure storage tanks, the expansion or contraction of the gas in the storage tank is often caused by...

China’s pipeline standard system-There are many application standards for pressure pipeline components in China, but they are not complete. Take the pipe flange standard as an example, the commonly used standards include GB national standard, JB machinery industry standard, SH...