gate valve ； CLASS150--2500 gate valve ;
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 pc
- Supply Capability:
- 30000 pc/month
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Specification
Standards
Design and Manufacture: Cast steel gate valve to API 600(ISO10434)or API 6D(IS014313) Cast stainless steel gate valve to API 603 or API 600(IS010434) Forged steel gate valve to API 602.
Inspec tion and Test: API 598, API 600 or API 6D
End flange dimension: ASME B16.5(for NPS<24): ASME BI6.47 series B API 605 or ASME B16. 47 series A. MSS SP-44 (for NPS> 24)
BW end dimension. ASME B16.25
Socket-weld dimension. ASME B16.11
Face to face and end to end. ASME BI6. 10
Pressure-temperature ratings: ASME B16. 34.
Design of Disc
Gate Valves with NPS=2 are of flexible wedge gate; Gate valves with NPS 2 are of solid wedge gate
Body and Bonnet Connection
The body and bonnet of Class 150-Class 900 gate valves are usually bolted bonnet design. And Class 1500-class 2500 gate valves are usually of pressurized seal design
Gasket of Cover Flange
Carbon steel or stainless steel flexible graphite combined gasket is used for Class 150 gate valve; Stainless steel flexible graphite wounded gasket is used for Class 300 gate valve; Stainless steel flexible graphite wounded gasket is used for Class 600 gate valve, and ring joint gasket is also optional for Class 600 gate valve; Ring Joint gasket is used for Class 900 gate valve; Pressurized seal design is used for Class 1500 --class 2500 gate valve.
Actuation
Hand wheel or gear box is usually used for gate valve actuation. Chain wheel and electric actuator can be also used for gate valve actuation if being requested by the customers
Packing Seal
Molded flexible graphite is used for packing material. PTFE or combined packing material can be also used if being requested by the customer. The intenal surface of the stuffing box, of which area is contacted with the packing, is of excellent finish (Ra 3.2 m). The stem surface, contacting with the packing, should be rolled and pressed after being precisely machined, so as to reach to the high finish and compactness (Ra 0.8 m )and ensure the reliable tightness of the stem area
Belleville Spring Loaded Packing Impacting System
If being requested by the customer, the Belleville spring loaded packing impacting system can be adopted for enhancing the durability and reliability of the packing seal
Back Seating Design
All our gate valves have the back seating design. In most cases, the carbon steel gate valve is fitted with a renewable back seat. 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 AP 600, it is not advisable to add or change packing by the mean of back seating when the valve is pressure containing
Seat
For carbon steel gate valve, the seat is usually forged steel. The sealing surface of the seat is spray welded with hard alloy specified by the customer. Renewable threaded seat is used for NPS 10 gate valves, and welded on seat can be also optional if being requested by the customer. Welled on seat is used for NPS 10 carbon steel gate valves. For Stainless steel gate valve, integral seat is usually adopted, or to weld hard alloy directly integrally. Threaded or welded on seat is also optional for stainless steel gate valve if being requested by the customer
Stem Design
The stem s of integral forged design. The minimum diameter of the stem shall per the standard requirement.
The connection of the stem and disc is T type. The strength of the connecting area is bigger than that of the T threaded part of the stem. The strength test of that area conforms to API 591
Stem Nut
Usually, the stem nut is made of ASTM A439 D2. it is also can be made of copper ally if being requested by the customer. For large sized gate valves( NPS 10 for Class 150, NPS 8 for Class 300, NPS 6 for Class 600, NPS 5 for Class 900), rolling bearing is fitted at the two sides of the stem nut in order to minimize the open and close torque of the gate valve
Special Gate Valve
Besides the common gate valves, my Company also makes cryogenic gate valve, Jacketed Gate Valve, Bellow Sealed Gate Valve, Extension Stem Gate Valve for underground application, Flat Gate Valve, etc.
- Q: What are the working principles of the electric gate valve?
- Ordinary type electric valve should be equipped with the control box, the motor is the true story and the inversion, and in general to a trip signal signal is normally open and normally closed, closed in place are normally open and normally closed two points according to their own needs wiring, three lines and then open and close control of the line of control there are also 4 lines to control some manufacturers, as well as the valve position, some three lines connected with the potentiometer, some installed valve position transmitter is connected with two lines, and over torque protection fault signal.
- Q: Soft sealed gate valve and hard sealing gate valve which good?
- If the caliber, material and pressure levels are the same, the current market price is still soft sealed gate valve, about 20-30%.
- Q: Function of signal butterfly valve and gate valve
- The signal butterfly valve applies to petroleum, chemical, food, medicine, papermaking, water and electricity, ships, water supply and drainage, smelting, energy and other system pipelines. It can be used as regulating and throttling devices in a variety of corrosive, non corrosive gases, liquids, semi fluids, and solid powder pipelines and containers. It is widely used in high buildings, fire protection systems and other piping systems that need to display valve switching status.
- Q: What kind of gate valve is Z6CS-H102?
- Z== valve type: gate valve6== pressure rating: 800LB, API602C== structure: bolt connection, valve cover, bolt connection gland, bright rod support typeS== connection form: socket welding, that is, SWH1== body material: A10502== inner material: seat sealing surface STL, gate sealing surface STL, valve stem 13Cr
- Q: How about the model of stainless steel gate valve?
- Stainless steel gate valve is divided into 304 stainless steel gate valve, 316 stainless steel gate valve, 321 stainless steel gate valve. The expression is: Z41H-16P.
- Q: What are the features and uses of the gate valve?
- 1) advantages: sealing performance than the cut-off valve, the fluid resistance is small, open and close more effort, full sealing surface by the erosion of media, media flows from the restrictions, with double flow, small structure length, wide application range. 2) disadvantages: high size, open need a certain space, opening and closing time is long, in the opening and closing, the sealing surface is easy to erode and scratch, and the two sealing pairs bring difficulties to the processing and maintenance.3) use: gate valve is generally used in the caliber of DN15-1800mm pipes and equipment, and its dosage is great, mainly cutting off function, not allowed to throttle.
- Q: What does gate valve do?
- The gate (gate valve) is a gate opening and closing parts, RAM direction of motion perpendicular to the direction of the fluid, valve can only be fully open and fully closed, can not be adjusted and the throttle.Gate valves for Class150 ~ 2500, the working temperature of -29 to 425 DEG C (Tan Gang) or -29 to 500 DEG C (stainless steel) small caliber pipeline, used to cut off or connect the line of medium, use different materials, can be separately applied to water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea etc. a variety of media, the 3 Classification valve according to the different classification methods can be divided into: the parallel gate valve, wedge gate valve, valve lift, rotating rod valve, quick opening and closing valve, reduced valve, flat gate valve etc.. 4, characteristics of fluid resistance is small, applicable pressure, temperature range, medium flow direction is not restricted, good sealing performance
- Q: What does the gate valve 150# mean? Is it stress PN? What's that, PN16 or?It's better to have some specific links, thanks!
- I think PSI is equal to 150#The sign behind is "PSI"You Baidu "ANSI standard pressure, pound scale and nominal pressure relations table" will knowI'm new, too, I understand
- Q: Yes, soft sealing gate valve can reach 25 kilograms, Fujian light valve company has this type of soft sealing gate valveAnonymous browsing | 28 times
- Soft seal butterfly valve seal is good, but can only withstand up to 16 pressure, or the plastic can not stand. A short period of time is OK, and it's also related to the workmanship and quality of the factory. The quality is poor.
- Q: The main question is, what are the functional differences in which case?
- The gate (gate valve) is a gate opening and closing parts, RAM direction of motion perpendicular to the direction of the fluid, valve can only be fully open and fully closed, can not be adjusted and the throttle gate valve. The direction of motion perpendicular to the direction of the fluid, valve can only be fully open and fully closed, can not be adjusted and the throttle.Gate valve advantages: 1, fluid resistance is small,.2, opening and closing more labor-saving,.3, medium flow unrestricted, not disturbed flow, do not reduce pressure,.4, simple shape, structural length is short, manufacturing process is good, a wide range of applicationsValve shortcomings: 1, between the sealing surface is easy to cause erosion and abrasions, maintenance is more difficult,.2, big size, open need some space, opening and closing time is long,.3, the structure is more complex
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gate valve ； CLASS150--2500 gate valve ;
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 pc
- Supply Capability:
- 30000 pc/month
OKorder Service Pledge
OKorder Financial Service
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