Excessive pursuit of high material: non-corrosive media (such as water, air) can use carbon steel valve body to avoid unnecessary costs.
Ignore dynamic seals: Valves that are frequently operated need to pay attention to stem seals (such as graphite packing vs. spring-loaded PTFE).
Ignore thermal expansion: High-temperature pipelines need to calculate the thermal displacement of the valve body and pipeline to prevent stress damage.

1. Selection principles. 2. Recommended material types. 3. Typical application cases.

【Valve Knowledge】Valve Performance Inspection

Valve inspection is extremely important, as it determines whether the valve can operate normally and safely.

The selection of valves is based on specific application needs and system requirements.

(1) Valves must be manufactured in accordance with the relevant technical standards, design drawings, technical documents and order contracts. They can only be shipped after passing the inspection.
(2) When there are special requirements, they should be specified in the order contract, and the inspection and supply should be in accordance with the specified requirements.
(3) The manufacturer should supply the products required by the user within the period specified in the contract.