Cast steel gate valves can only be fully opened and fully closed to be used for cutting in the pipeline.The entire flow channel is a straight-through passage when the valve is fully-open, and the pressure loss of medium running is minimum.Gate valve is usually for working condition in which the valve is not opened or closed frequently, It's not suitable for adjustment or throttling.The most important feature of the cast steel gate valve of TANA machine is that they can be ensured that the permissible leakage rate can be lower than that specified in API 6D and API 600, and the middle shaft sealing can pass the USA VOC leakage test. Carbon Steel, Stainless Steel, Alloy Steel, Duplex Steel may be selected for transportation of water, steam, oil, natural gas, nitric acid, acetic acid, oxidant and urea.
TANA knife gate valves are available in various designs, one-piece body and two-piece bodies, rising stem and non-rising stem, uni-direction and bi-direction structures, resilient and metal seat rings, bonnetless and bolted bonnet designs. For optional designs, deflection cone could divert the flow of abrasive slurries and protect valve seat from abrasion, V port disc and through conduit design are used for throttling service, per customers' requirements.
DIN standard gate valve has bellow features: Outside Screw and Yoke,Bolted Bonnet ,Flexible Wedge, Full Guided,Rising Stem and Non-Rising Handwheel, Welded Seat Ring,The material has GS-C25,CF8,CF8M. Application:Industry, powerstations, flue gas purification plant, processing technology, gas supply, vapour facilities, recycling facilities, vacuum facilities, hot water, thermal oil applications, general plant manufacturing, etc. Medium:Steam, gases, hot water, thermal oil, ammonia etc.
Cast iron gate valve provides full flow with minimal pressure drop. The cast iron gate valve has flat face end connection for easy installation and accessibility. Outside screw and yoke (OS&Y) and Non-rising stem gate valves structure,Outside screw and yoke (OS&Y) gate valves are recommended when positive shutoff and a quick visual indicator of open/closed position is required. Non-rising resilient seated gate valves solve the problem in general gate valves such as leakage, rusting etc.and saves installation space.Bolted bonnet, Solid wedge, Iron body bronze mounted (IBBM), flanged flat face end connections. Conforms to MSS SP-70 DIN3352,BS5163,KS B 2350.
TANA forged steel gate valves have set their own standards in many industries, much like our super-specialty valves. Available in sizes, from 1/4” to 2” for pressure 800lb ~2500lb with forged carbon steel (ASTM A105N); forged alloy steel (ASTM A 182 Gr. FS/F11/F22); forged stainless steel (ASTM A 182 Gr. F304/F304L); forged stainless steel (ASTM A 182 Gr. F316/F316L). Rotary table surface grinding and imported lapping machines ensure a fine surface finish of 100% leak-tightness. The trim materials is hardened and tempered for higher durability and performance. Further stellited trim can also be provided. The valves offered can meet both API and BS Standards requirements.
The design and manufacture of high-pressure valve is in accordance with API600, the High Pressure Seal Gate Valves has a beautiful shape, compact structure, reliable sealing. Valve for the Class 900lb-Class2500lb various tubes on the road. High-pressure self-sealing valve has the following advantages: 1) Self-sealing high-pressure valve allows the structure of the valve body, valve cover tight junction structure, the provincial Public Works save cost, safe and reliable. 2) valve pressure in the valve cover seal, the use of the modular structure to achieve linear sealed its seals at the same time the use of austenitic stainless steel, anti-cavitation, extended life, thereby ensuring that the valve seal under high-pressure differential did not leak.
TANA Bypass gate valves have the back seating design.For stainless steel gate valve, the back seat is machined directly in the bonnet or is machined after welding .When the gate valve is at fully open position, the sealing of the back seat can be very reliable .However, as per the requirement of API600, it is not advisable to add or change packing by the mean of back seating when the valve is pressure containing.
Slab Gate Valves(Parallel type gate valves, Through Conduit Gate Valves)are widely used in oil, natural gas long-distance pipelines and gas fields as open/close control valves. Valves used in forging or casting body, the gate designed with diversion holes, non-diversion holes; single plate and double plate structure; Seat used bi-direction seal seat which mainly based on the metal seat sealing and assisted with soft seat sealing as a second type of seal. The series of parallel type gate valve has rational design, compact structure, sulfur resistance, corrosion resistance, wear-resistant, reliable sealing, and light torque of switches, easy-to-use.
Gost standard gate valve use a combination of die-formed flexible graphite and interbraided graphite in a predetermined arrangement to ensure an effective seal.Graphite packing achieves its maximum ability to isolate the atmosphere when it is contained within a chamber that is precise in finish and dimension.The cast steel russian standard gate valve.
Wenzhou Topnotch Machine Co.,Ltd is a professional leader China Pressure seal gate valve,Knife gate valve,Cast steel gate valve,DIN standard Gate Valve,Cast iron gate valve manufacturer with high quality and low price.Welcome to contact us!
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