stopcock sampling valve

design standards

The pressure/temperature rating, materials, and design requirements of the valve shall comply with GB/T 12224-2015

Valve design standards are in accordance with GB/T 12235-2007

Inspection and testing of valves shall comply with GB/T 26480-2011

structural characteristics

● Online real-time sampling, no need for downtime and no impact on production;

● Rotating the handwheel can realize sampling, making the operation easy and quick;

● According to testing needs, large-volume sampling can be met;

● Optimize flow channel design, no dead corners, no medium residue;

● The sealing surface is welded with STL cemented carbide, which is wear-resistant and corrosion-resistant and has a long service life.

Main Parts & Materials

Body material: WCB/304/316/316L, etc., can be customized according to different needs of customers;

Material of valve trim: PTFE/RPTFE/PHB, etc., can be customized according to different needs of customers.

application scenarios

Pharmaceuticals, coal chemicals, sewage treatment, and many other fields are waiting for you and me to discover together.

Application Case 1: In the field of fine chemical industry, the preparation method of silicone oil is to prepare high-boiling silicone oil from secondary high-boiling substances of organic silicon. During the preparation process, different mass fractions of methanol need to be added dropwise at different times. Before alcoholysis, the percentage content of methanol needs to be tested. Without affecting production or stopping, choosing Wanlong sampling valve can perfectly solve this problem, providing reliable quality assurance for customers 'products and improving customers' production efficiency.

Application Case 2: The customer belongs to Sinochem Group and is the world's leading comprehensive service provider for polymer additives. The customer originally used a simple ordinary valve for sampling at a high temperature of 150 ° C. A bypass was needed during installation, which made online and quantitative sampling impossible. In addition, due to the pressure of the medium in the pipeline, there is a safety risk to the operator during sampling; After many exchanges with customers and analysis of different working conditions, Wanlong Machinery R & D Center has designed cut-off sampling valves and stopcock sampling valves for different media, different temperatures and different sampling volumes, realizing online, cavity-free and no pressure, ensuring that the sample liquid is non-contaminated and the safety of operators, and at the same time improving the efficiency of sampling work.