Cut-off 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

The design standard of jacket is in accordance with JB/T 13458-2018

Structural Features

●Online real-time sampling without the need for shutdown, ensuring uninterrupted production;

●Simply rotate the handwheel to complete sampling, offering convenient and quick operation;

●Capable of large‑volume sampling to meet various testing requirements;

●Optimized flow path design with no dead legs and no media residue;

●Sealing surfaces overlaid with STL hard alloy for wear and corrosion resistance, extending service life;

●For viscous liquids or crystallization‑prone media, a globe‑type sampling valve with a heating/cooling jacket can be selected;

●Connection types at the jacket inlet/outlet can be customized according to customer needs;

●Diverse structural designs available to suit multiple sampling scenarios.

Main Parts & Materials

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

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.