Stainless steel ball valve model specification | valve specification model_Shanghai Zhongding Valve
Ball valve specification model | ball valve model representation method | ball valve model compilation representation is mainly divided into seven important constituent elements: valve type, driving mode, connection form, structural characteristics, nominal pressure, sealing surface material, valve body material and other elements. Let me break down and explain.
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1. Specification and code of ball valve: Ball valve-Q
If there is a code in front of Q, it is an additional code for the ball valve: V indicates that the spool has a V-shaped structure, D indicates low temperature, B indicates thermal insulation, P indicates an eccentric structure, and U and S and DY indicate a top-mounted type;
2. Code for the transmission mode of the ball valve: common methods are: transfer method Worm gear pneumatic electric Handwheel Code 3 6 9 No code
3. Code for connection mode of ball valve: Connection method internal thread Flange welding Double clip Clamp card cover Code 1 4 6 7 8 9
. 4. Code design of ball valve: structure type Code structure type Code Floating ball Straight flow path 1 Fixed ball Straight flow path 7 Y-shaped three-way flow channel 2 Four-way flow path 6 L-shaped three-way flow channel 4 T-shaped three-way flow channel 8 T-shaped three-way flow channel 5 L-shaped three-way flow channel 9 — — Hemisphere pass 0
. 5. Ball valve sealing material code: material Babbitt alloy Boil Nitriding steel 18-8 series stainless steel Fluoroplastic glass Cr13 stainless steel Lining Monel Code B C D E F G H J M material Nylon plastic Monel Lead lined Mo2Ti stainless steel plastic Copper alloy rubber Cemented carbide Valve body direct processing Code N P Q R S T X Y W
6. The nominal pressure value of the ball valve is directly expressed with Arabic numerals, which is 10 times the MPa. For example: Q41F-16C where 16 means that the pressure is 16 kg (1.6Mpa) and the maximum pressure can be up to 64Mpa; if it is 150LB, it means the American standard pound pressure, the maximum pressure level can reach 2500LB (150LB = 1.6MPA / 300LB = 2.5-4.0mpa / 400LB = 6.4mpa / 600LB = 10mpa);
7. Material code of ball valve body: Body material Carbon steel 18-8 series stainless steel Mo2Ti series stainless steel Chrome-molybdenum steel grey cast iron plastic Code C P R I Z S Body material Ductile iron Copper and copper alloys Code Q T
In the end, everyone should have a general understanding. In order to be able to analyze concretely, let me give an example. Ball valves are generally divided into floating ball valves and fixed ball valves. The model of the floating ball valve can be written as Q41F (where: Q is the first word of Qiu pinyin of the ball of the ball valve, 4 is the flange connection, 1 is the structure form is floating, F is the sealing surface material is PTFE, which is commonly known as tetrafluoroethylene ), The model of the fixed ball valve can be written as Q47F (where: Q is the first word of Qiu pinyin of the ball of the ball valve, 4 is the flange connection, 7 is the structural form is fixed, F is the sealing surface material is PTFE, which is commonly known as PTFE PTFE). 
Stainless steel ball valve specification model "alt =" Stainless steel ball valve specification model "/>
Both of these representations are manual. If you want to add turbo transmission above, then the models are Q341F and Q347F (so the number 3 is the meaning of turbo transmission).
1. Floating ball valves generally range from DN15 to DN250. Fixed ball valves generally start from DN50. To sum up, use floating ball valves and large diameter fixed ball valves.
2. From the appearance, the bottom of the fixed ball valve has a lower stem support than the floating ball valve.
3. Floating ball valve material is no different from fixed ball valve. Material can be provided upon request.
Example of ball valve editing:
1. Low-temperature ball valve DQ41H-16P indicates: D low temperature, Q ball valve, 4 flange connection, 1 floating straight flow path, H indicates stainless steel, 16 pressure is 16 kg, and P valve body is 18-8 series stainless steel;
2. Pneumatic ball valve Q645F-25C means: Q ball valve, 6 pneumatic drive, 4 flange type, 5T three-way flow channel, F fluorine plastic, 25 pressure 25 kg, C cast steel.
Common ball valve models are:
V-type ball valves: VQ40F, VQ640F, VQ940F, VQ641H, VQ941H, VQ70F, VQ670F, VQ970F, VQ71H, VQ671H, VQ971H;
Insulation ball valve: BQ41F, BQ641F, BQ941F;
Stainless steel ball valves: Q41F, Q641F, Q941F, Q41H, Q641H, Q941H;
Fluorine-lined ball valves: Q41F46, Q641F46, Q941F46;
Low temperature ball valve: DQ41F, DQ41H, DQ41Y;
Wafer type ball valve: Q71F, Q671F, Q971F, Q71H, Q671H, Q971H,
High temperature ball valve: Q41M, Q641M, Q941M, Q41PPL, Q641PPL, Q941PPL,
Fixed ball valves: Q347F, Q647F, Q947F, Q347H, Q647H, Q947H, Q347W, Q647W, Q947W;
Turbo ball valve: Q341F, Q341H, Q341W, Q341Y;
Welded ball valves: Q61F, Q361F, Q61H, Q661F, Q661H, Q961F, Q961H;
Eccentric hemispherical valves: Q340F, Q640F, Q940F, Q340H, Q640H, Q940H, Q340Y, Q640Y, Q940Y;
Top-mounted ball valves: SQ340F, SQ940F, SQ340H, SQ940H, SQ347H, SQ647H, SQ947H, DYQ340F, DYQ640F, DYQ940F
Three-way ball valve: Q44F, Q45F, Q44H, Q45H, Q644F, Q645F, Q644H, Q645H, Q944F, Q945F, Q944H, Q945H;
Four-way ball valve: Q46F, Q46H, Q646F, Q646H, Q946F, Q946H.
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