globe valve ； CLASS150--900 gate valve ;
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- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 pc
- Supply Capability:
- 3000 pc/month
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Specification
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 gate valve Z41H-40 mean?
- Z - that means gate valve (the initial letter of Zha)4---- is the connection form, which means flange connection1---- form of structure, which means Plain Bar wedge type rigid single gate valveH---- sealing surface overlaying ferrous carbide (initial letter of alloy steel He)40---- nominal pressure is 40 kg, or 4.0MPa, that is, PN10 at 250 degrees Celsius, the maximum working pressure is 40 kgThe material is cast carbon steel
- Q: Z45T-10 what kind of material is the gate valve?
- JB/T 308 regulation3.7.4 nominal pressure of less than 1.6Mpa gray cast iron valve body material code, in the type of preparation to be omitted.So its body material is gray cast iron, the sealing surface is copper alloy
- Q: How big valves and fittings need flange installation, such as gate valves, DN50, DN80 and the like?.
- Specifically, look at the pressure of the pipeline, the environment is not big, if large with flange connection, usually hoop or wire can be connected.
- Q: Does the relief valve have a gate valve?
- With the ball valve, needle valve, with the valve did not see, but there should be some.
- Q: Why does the fire hydrant box in the air defense area need to be added with gate valves?
- Code for design of basement for civil air defence GB50038The installation and installation of the protective valve on the water supply line of the 6.2.13 air defense basement shall comply with the following requirements:OneWhen the water supply pipe from the entrance into, should be set up in the inner protective sealing door;
- 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: Internal screw current limiting gate valve (Tan Gang) PN5.0 DN15/ Phi 1 Rc1/2 what does that mean?
- We did thatInternal thread current limiting gate valve (Tan Gang)Body material: carbon steelPressure rating: PN5.0 = 300LB American StandardNominal = DN15 = 1/2"Phi 1 = in the middle of the gate drilling a Phi 1 hole, so that in closing there will be a certain flow, that is, the minimum flow, that is, the current limit.Rc1/2 is thread, which is the connection
- Q: What do gates, Z15T-10, Z15W-16T, Z45T/W-10, Z41T-10 mean?
- Z15T stands for manual, internal thread connection, dark wedge single gate. The sealing surface is made of copper alloy. The nominal pressure is PN1MPa;Z15W-16T for manual, internal thread connection, dark wedge type single gate, the valve body material is copper alloy, the valve seat sealing surface material directly processed by the valve body, nominal pressure is PN1.6MPa;Z45T/W-10 stands for manual, flange connection, dark wedge single gate. The valve body is made of copper alloy, and the valve seat face material is directly machined by the valve body. The nominal pressure is PN1MPa;Z41T-10 stands for manual, flange connections, plain wedge single gate, sealing surface material is copper alloy, nominal pressure is PN1MPa.According to domestic valve model standards, the valve model is by the valve type, gate valve drive mode, gate valve connection, gate valve structure, sealing material, valve body material code to indicate
- Q: What's the difference between a soft seal gate valve and a hard sealed gate valve?
- It uses the elastic material of the gate, and uses the elastic material to produce the micro deformation compensation effect. It can achieve good sealing effect. Soft sealing gate valve has the advantages of light switch, reliable sealing, good elasticity memory and long service life.Hard sealing surface of the gate valve for cast iron or stainless steel, open and close resistance is small, no flow, but poor sealing performance.
- Q: What is plug welding gate valve?
- Socket welding valve refers to the use of socket welded connection valve.Simple socket welding is to insert the pipe into the gate joint to weld.The form of socket welding is mainly used for welding small bore valves and pipes, fittings and pipes. Small caliber pipeline wall thickness is thin, and error prone edge ablation, butt welding is difficult, more suitable for socket welding. In addition, the socket of socket welding has reinforcement effect, so it is also used under high pressure. But socketweld also has disadvantages, one is the stress condition is not good after welding, easy welding penetration, pipe inside a gap, so should not be used for piping system of crevice corrosion sensitive medium pipeline system and clean high requirements for socket welding. In addition, ultra high pressure pipeline, even small caliber pipe wall thickness is also very big, can use butt welding connection, as far as possible to avoid socket welding.
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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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