Explanation of the gate valve model numbering method

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This post was last edited by Wu Xiaozhen on 2017-9-13 at 11:45. Explanation of the method for coding gate valve models: Those who are purchasing gate valve products for the first time or lack knowledge regarding the coding of such valves should understand this coding method. It helps in making the right selection and in procuring products from reputable valve manufacturers, thereby avoiding issues such as choosing the wrong model, placing incorrect orders, or receiving insufficient product information, which can lead to returns and exchanges. The editing method for this model combines international model standards with the internal technical specifications of Biaoguang Valves (www.cnbgfm.com) to ensure accurate representation. It explains the additional codes for gate valves, the valve codes themselves, the driving methods, connection types, structural designs, sealing materials, pressure ratings, and valve body materials, in the hope of being helpful to users. Explanation of the coding method for standard gate valve models: Additional codes for gate valves: WZ denotes bellows gate valves, DZ denotes low-temperature gate valves, NKZ denotes vacuum gate valves, and PZ denotes knife gate valves ； Gate valve type designation: Z ； Drive type indicates: Manual (no code), 2 – Electro-hydraulic, 3 – Turbine worm gear, 5 – Bevel gear drive, 6 – Pneumatic, 9 – Electric ； Connection method indicates: 4 flange connection, 6 welding, 7 clamp type ； Structural format representation: 0 – elastic gate valve; 1 – single gate valve with visible stem and wedge mechanism; 2 – double gate valve with visible stem and wedge mechanism; 3 – single gate valve with visible stem and parallel mechanism; 4 – double gate valve with visible stem and parallel mechanism; 5 – single gate valve with hidden stem and wedge mechanism; 6 – double gate valve with hidden stem and wedge mechanism; 7 – single gate valve with hidden stem and parallel mechanism; 9 – double gate valve with hidden stem and parallel mechanism ； Sealing material types: W – directly machined valve body; T – alloy; X – rubber; F – fluoroplastic; H – Cr stainless steel; Y – cemented carbide; M – Monel alloy ； The pressure rating is indicated as PN1.0–32 Mpa; 10=1.0 MPA, which means the pressure is 10 kilograms. 150LB–1500LB denotes pressure in US pounds, while 5–63 K represents pressure in kilopascals ； Valve body materials are indicated as follows: Z – gray cast iron, Q – ductile cast iron, T – alloy, C – carbon steel, P – stainless steel 304, R – stainless steel 316, V – chromium-molybdenum-vanadium steel. Example explanation of gate valve model designation: 1. Z41X-10/16Q means: Z gate valve, 4 flange connection, 1 straight stem wedge-type single gate plate, X rubber sealing, 10/16 kilograms of pressure ； 2. Z945X-16Q means: Z gate valve, 9 electric, 4 flange type, 5 wedge-shaped single gate with hidden stem, X rubber seal, 16 kilograms of pressure. Common gate valve models of Biaoguang valves: Elastic seat gate valve: Z40X, Z40H ； Stainless steel gate valves: Z40W, Z41W, Z40H, Z41H ； Electric gate valves: Z940H, Z941H, Z943W, Z944H, Z945X, Z943H ； Pneumatic gate valve: Z641F, Z641H, Z641W ； Welded gate valves: Z60H, Z61H, Z62H, NKZ64H ； Z560H, Z561H, Z960H, Z961H ； Slurry valve: Z73X, Z73H, Z673X, Z673H, Z973X, Z973H ； Knife gate valves: PZ43H, PZ543H, PZ643H, PZ943H, PZ73H, PZ573H, PZ673H, PZ973H ； Straight-through gate valve: Z41X, Z41H, Z41X, Z42H, Z44X ； Dark stem gate valve: Z45X, Z45H, Z47F ； Screw gate: LMD single-direction, LMS double-direction ； Bevel gear gate valves: Z540H, Z541H, Z542H, Z543H, Z545H ； Bellows gate valve: WZ41H, WZ41W ； Low-temperature gate valves: DZ40H, DZ40W, DZ40Y, DZ41F, DZ41H, DZ41W, DZ41Y.