German LPW valve LPW model LPW price

LPW valves serve an on/off function. They are commonly installed at the inlets and outlets of cold and heat sources, equipment inlets and outlets, and pipeline branches (including risers), and can also be used as drain valves and air vent valves. Common shut-off valves include gate valves, globe valves, ball valves, and butterfly valves. Gate valves can be classified into rising stem and non-rising stem, single wedge and double wedge, as well as wedge-shaped gate and parallel gate types. Gate valves do not provide tight shutoff, and large-diameter gate valves are difficult to open; the valve body size along the flow direction is small, resulting in low flow resistance, and gate valves cover a wide range of nominal diameters. Globe valves are classified into straight-through, angle, and Y-pattern types based on media flow direction, with rising stem and non-rising stem variants. Globe valves provide better shutoff tightness than gate valves, have longer valve bodies, higher flow resistance, and a maximum nominal diameter of DN200. The ball valve core is a perforated sphere. Rotating the valve stem aligns the sphere's opening with the pipeline axis for full open position, and rotating it 90° achieves full closure. Ball valves have certain throttling capabilities and provide relatively tight shutoff. The butterfly valve core is a circular disc that rotates around a vertical axis perpendicular to the pipeline axis. When the disc plane is aligned with the pipe axis, it is fully open; when the disc plane is perpendicular to the pipe axis, it is fully closed. Butterfly valves have short body lengths, low flow resistance, and are more expensive than gate valves and globe valves. The butterfly valve core is a circular disc that rotates around a vertical axis perpendicular to the pipeline axis. When the disc plane is aligned with the pipe axis, it is fully open; when the disc plane is perpendicular to the pipe axis, it is fully closed. Butterfly valves have short body lengths, low flow resistance, and are more expensive than gate valves and globe valves.

LPW valve accessories

Valves and fittings are used for pipeline connection or control systems; neither valves nor fittings can exist independently, as they complement each other. Valves and fittings are available in carbon steel, stainless steel, and PVC, or other materials, with the first two being the most common. In recent years, with improvements in living standards, demand for processed food has increased accordingly. This has driven the rapid development of food machinery, leading to a boom in the production of stainless steel sanitary valves and fittings. When people refer to valves and fittings, they mostly mean stainless steel sanitary grades.

LPW valve specification precautions

Acceptance follows HG 20202-2000 "Code for Construction and Acceptance of Degreasing Engineering". Before assembly, each component is wiped with clean precision filter paper; selecting dead corners of the components, no color change on the filter paper indicates compliance. 1) The valve model shall indicate the applicable national standard number. If it is an enterprise standard, relevant model descriptions shall be provided. 2) Valve working pressure shall be ≥ pipeline working pressure; without affecting price, the pressure the valve can withstand should be greater than the actual pipeline working pressure. 3) Valve manufacturing standards shall specify the applicable national standard number; if it is an enterprise standard, enterprise documentation shall be attached to the procurement contract.

LPW valve common faults

Rubber elastomers in butterfly valves may experience tearing, wear, aging, perforation, or even detachment during continuous use. Traditional hot vulcanization processes are difficult to adapt to on-site repair needs, requiring specialized equipment, consuming significant thermal and electrical energy, and being time-consuming and labor-intensive. Nowadays, polymer composite material methods are gradually replacing traditional methods, with the FoShiLan technology system being the most widely applied. Its products possess superior adhesion and excellent wear and tear resistance, ensuring that repaired parts achieve or even exceed the service life of new components, significantly reducing downtime.

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