Feature Description American Standard high-pressure welding valve opening and closing parts 2500LB gate, gate movement direction perpendicular to the direction of the fluid. Using media as an off valve, when in full throughout the flow path through, the pressure medium to run minimal loss at this time. According to the form of the sealing element, often divided into several different types of valves, such as: wedge gate valve, flat-valve, parallel Gate Valve, Wedge Gate Valve and so on. Valve usually does not require frequent opening and closing, and keeping the shutter fully open or fully closed condition, does not apply to a regulator or throttling. Choice of different materials, can be separately applied to water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media. Also suitable for containing particulate solids and viscosity of the medium, and suitable for use as a low vacuum valves and venting systems. The unit has hand wheel, bevel gear, electric, pneumatic. Structural features 1, Ram has two sealing surface, the most common is the gate sealing surface formed two wedge, wedge angle with the valve parameters vary, usually 5 °. 2, the sealing principle wedge gate valve is sealed by the two surfaces of both the sealing surface and the valve on the upper wedge wedged closely integrated to achieve when sealed. 3, wedge valve gate opening and closing drive different ways according to the valve stem can be divided into clear shot valve (the lift rod valve) and the dark bar gate (rotating rod valve). 4, wedge valve gate structure according to the form can be divided into rigid resilient gate valve and gate valve. 5, the valve body is cast molding, body and bonnet connection with bolts, the flange using spiral wound gasket seal, when customers have special requirements can be used to connect the metal ring. 6, channel flow, flow coefficient. Sealing surface by erosion and erosion small media. 7, sealing surface alloy steel or carbide wear resistant, anti-abrasion performance. 8, the use of flexible graphite packing, sealing reliable, flexible operation. 9, medium flow unrestricted, non-spoiler, do not reduce the pressure. 10, simple shape, structure, length short, good manufacturing processes, a wide range. Design Specification Design Standard: API 600, ASME B16.34, GB / T 12234, DL / T 531, JB / T3595 length of the structure: ISO14313 / API 6D, ASME B16.10, GB / T 12221, DL / T 53 connection standard : ASME B16.5, ASME B16.47, ASME B16.25, GB / T 9113, JB / T 79, HG / T 20592, DL / T 531, JB / T3595, JB7490 pressure test: API 6D, API 600, API 598, GB / T 13927, GB / T 26480, JB / T 9092, JB / T3595 pressure and temperature rating: ASME B16.34, GB / T 9124, JB / T3595, JB / T74 performance parameters Body Material: Carbon Steel , stainless steel, alloy steel nominal diameter: NPS 2 "~ NPS 56" DN50 ~ DN1400 pressure range: CL150 ~ CL2500 PN10 ~ PN420 Operating temperature: -196 ℃ ~ + 600 ℃ Application: water, sewage, construction, petroleum, chemical , food, pharmaceutical, textile, electric power, shipbuilding, metallurgy, energy systems, prompted an order, customers have special requirements, such as product, shall provide the following description in the contract: a length of the structure; b connection type; c... nominal diameter, full bore, reduced in diameter pipe sizes; d use of media and the temperature and pressure range;. e testing, inspection standards and other requirements. Second, the factory can configure various types of drives according to customer specific requirements. Third, as provided by the customer to determine when the valve type and model, the customer should correctly explain the meaning of the model and requirements contracts under the same conditions of supply and demand sides understand.