Quality is everything! US Walker (WORK) import plunger type valve is a variant of the conventional cut-off valve. In the valve, the valve and seat are usually designed based on the plunger principle. Polished into the plunger and valve stem is connected seal is set on the plunger two elastic seals to achieve. Two elastic seals separated by a collar, and through the valve cover nut load exerted on the valve cover seals around the plunger pressure prison. Elastic ring can be replaced, you can use a variety of materials, the valve is mainly used in the "on" or "off", but with a special form of plunger or special rings can also be used to regulate the flow . Mainly applied to metallurgy, electrical, chemical, oil refining, fertilizer, light industry, food and other industries. How it works: piston type valve is made up of body, bonnet, stem, piston, ring, hand wheels, Lingqibasui parts. When rotating the hand wheel, drive through the stem of the plunger, the plunger and seat top oblique cone clutch cone back and forth to complete the valve opening and closing. In the valve, the plunger and the seal between the interference fit. By adjusting the valve cover fixed clamping bolt, the seal ring is compressed against the outer ring inner ring tight plunger valve chamber wall, a radial force component on the ring so that the pressure generated by the fluid, thus ensuring tightness, to eliminate the external leakage. Because seal with strong resilience, and extravagant high new sealing material, non-toxic, so the seal is reliable and durable. Seat and tapered plunger sealing parts, using high-quality materials resistant to extravagant, to ensure the life of the valve. Technical parameters: Nominal Diameter: DN15-DN400 Nominal pressure: 1.6Mpa-4.0Mpa Temperature: ≤425 ℃ Connection: Flange material: cast iron, steel, stainless steel, forged steel, etc. Suitable medium: water, steam, gas, oil, please provide the following information when ordering:? a nominal diameter (mm), PN (MPa), and the operating temperature range of two straight before the valve regulating pressure, back pressure valve 3 media name and status at 4??? Single-seat control valve supply voltage (220V or 380V, the default 220V) 5 Input signal:? 4-20mA, or 1-5V (default 4-20mA) 6 single-seat control valve body, the trim material requirements seven other?? special requirements (such as corrosion resistance requirements, proof grade requirements, leakage class limits, etc.) United States Walker (WORK) Valve Chinese agents welcome you to inquire and order!