globe valve ； CLASS150--900 gate valve ;
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 3000 pc/month
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Item specifice
Standards
Design and Manufacture: Cast steel globe valve to BS 1873 and ASM, 16.34 Fore tea gibe valve to API 602(IS015761).
Inspection and Test: API 598
End flange dimension: ASME B16 BW end dimension. ASME B16.25
Socket-weld dimension ASME B16. 11
Face to face and end to end. ASME B16. 10
Pressure-temperature ratings: ASME B16. 34
The features of globe valve
Bolted Bonnet; Outside Screw and Yoke; Rising stems; Metallic sealing surfaces.
Body and Bonnet Connection
The body and bonnet of Class 150-class900 globe valves are usually bolted bonnet design. And the Class 500-clas 2500 globe valves are usually of pressurized seal design
Gasket of Cover Flange
Stainless steel flexible graphite wounded gasket is used for Class) ( gs300 globe valve Stain less steel flexible graphite wounded gasket is used for Class N)0, and ring joint gasket is also optional for Class600. Ring joint gasket is used for Class f globe valve. Pressurized seal design is used for Class 1500-class2500 globe valve
Actuation
Hand wheel, impact hand wheel gear box is usually used for globe valve actuation Chain wheel and electric actuator can be also used for globe 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 u 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 u 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 can be adopted for enhancing the durability and reliability of the packing seal
Back Seating Design
All our globe valves have the back seating design. In most cases, the carbon steel globe valve is fitted with a renewable back seat. For stainless steel globe valve, the back seat is machine directly in the bonnet or is machined after welding. When the globe valve is at fully open position, the sealing of the back seat can be very reliable. However, as per the requirement of APL, 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 globe valve, the seat is usually forged steel, The sealing surface of the seat is spray welded with hard alloy specified by the customer, Renew able threaded seat is used for NPSS10 globe valve, and welded on seat can be also optional if being requested by the customer. Weed on seat is use for NPS 12 carbon steel globe valves. For stainless steel globe valve, integral seat is usually adopted or to weld hard alloy directly integrally. Threaded or welded on seat is also optional for stainless steel globe valve if being requested by the customer.
Stem Design
The stem is of integral forged design. The minim diameter of the stem shall per the standard requirement
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 globe valve, rolling bearing is fitted at the two sides of stem nut in order to minimize the open and close torque of the globe valve.
Special Globe Valve
Besides the common globe valves, my Company also makes cryogenic globe valve, bellow sealed globe valve, Jacketed globe valve, etc
- Q:What does Z941H-25DN250 mean by electric gate valve (excluding electric equipment)?
- 9- electric (drive)4- flange connection (connection)1- plain wedge single gate valve (valve structure)H-Cr stainless steel (sealing surface material)25- nominal pressure is 25 kg, or 2.5MPa;DN250- valve by 250mm
- Q:The difference and use of gate valve and stop valve
- Generally large and nominal caliber DN50 mostly with gate valve, especially industrial high temperature, high pressure, highly toxic and so on.Stop valve is able to stop and adjust flow, small footprint, small size, generally less than the nominal diameter, DN50 occasions use it. Two can be closed, in the flow of linear requirements are not high, you can adjust the flow. Just because of its structural characteristics of the valve to make its flow resistance, so there is a demand for throttling with a little more than the gate valve. In addition, the cut-off valve, whether it is a formal or reverse installed, in the opening and closing process, there is always a very difficult, and therefore can not do a great deal, or it is not easy to open and close. In addition, the cut-off valve has a one-way sealing effect of good features, so in the prevention of reverse flow of the working fluid, it also has a place to play.Hope to be of some help to you!
- Q:Generally, how big is the diameter of the installation flange plate gate valve?
- Under normal circumstances:Flanged gate valves for piping over DN50,DN50 (below) can be made of wire or gate valves, or flanged gate valves (flanged valves or welded gate valves)
- Q:What are the working principles of the electric gate valve?
- You see what type of electric valve, is integral or ordinary type, if the overall type Denso took power on the line, is generally 380V and 220V power supply, and then according to their own needs and then open the signal line, in place and closing in place and remote control line, valve position feedback signal 4~20ma over torque protection, fault signal. 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:What is the standard for ductile iron gate valve set?
- The valve material name, specifications and price according to the facts that the valve rod input line.
- Q:What is the allowable leakage rate of the gate valve D?
- In GB/T 13927, the leakage rate of the valve is divided into 10 grades, namely: A, AA, B, C, CC, D, E, EE, F, G class. And stipulates that when the order contract does not specify, the metal sealing valve according to D requirements.
- Q:Which is more expensive, bronze gate valve or brass gate valve?
- The casting and workability of brass are much better than that of stainless steel, especially the valve with more complicated internal cavity.
- Q:What are the types and product categories of knife gate valves?
- Knife gate valve drive mode:Manual, sprocket, electric, pneumatic, hydraulic, bevel gear, electronically controlled, hydraulic and pneumatic drive. Knife gate shape: bright rod, dark rod two kinds. Knife gate valve material: cast iron, cast steel, carbon steel, stainless steel, fluorine and so on. Knife gate valve seal: hard sealing, soft sealing, single-sided sealing, double sided sealing and other material seal.
- Q:Does the relief valve have a gate valve?
- The pressure reducing valve group is composed of an adjustable pressure reducing valve, a pressure gauge, a copper valve, a Y filter, a rubber soft joint, a spring pressure gauge, a pressure gauge, an air valve, a pressure gauge and a bent pipe.
- Q:What are the main types of gate valves?
- sealing surface configuration can be divided into wedge gate valve and parallel gate valve, wedge gate type valve can be divided into: single gate type, dual gate plate and the flexible gate type; parallel gate valve can be divided into single and dual gate gate plate.
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globe valve ； CLASS150--900 gate valve ;
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 3000 pc/month
OKorder Service Pledge
OKorder Financial Service
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