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Globe Valve

High Temperature Steam Thermal Oil Manual Operated Cast Steel WCB Bellows Seal Globe Valve


Place of Origin:China
Brand Name:Jinhongda
Model Number:DN15-DN400
Certification:ISO CE
Media:Gas,heat oil,steam,etc
Customized support:OEM, ODM
Minimum Order Quantity:1
Packaging Details:first packed by plastic film.then put them into wooden cases High Temperature Steam Thermal Oil Manual Operated Cast Steel WCB Bellows Seal Globe Valve
Delivery Time:To be negotiated
Supply Ability:15000 Set/Sets per Month
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Description

The stop valve, also known as the shut-off valve, is a forced sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve disc, the resistance to be overcome by the operating force is the friction between the valve rod and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diameter of the valve rod is larger, otherwise the valve rod will be bent. There are three types of connection: flange connection, screw connection and welding connection. After the appearance of the self-sealing valve, the medium flow direction of the stop valve will change from the top of the valve disc to the valve chamber. At this time, under the medium pressure, the force to close the valve is small, while the force to open the valve is large, and the diameter of the valve rod can be reduced accordingly. At the same time, under the action of medium, this type of valve is also relatively tight. Our country's "three chemical supply" has stipulated that the flow direction of stop valves should be from top to bottom. When the stop valve is opened, when the opening height of the valve disc is 25%~30% of the nominal diameter, the flow has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the full open position of the stop valve should be determined by the stroke of the valve disc.

微信截图_20230212142403

Specifications


SPECIFICATIONS FOR BELLOWS SEAL GLOBE VALVES
Pressure rating and size:PN16,PN25,PN40
DN15 to DN600
1/2"~24"
Material:Body : GS-C25, WCB, CF8, CF8M
Disc  : C.S+13Cr, SS304, SS316
Stem : 1Cr13, SS304, SS316
Bellows : SS304, SS316
Bonnet : GS-C25, WCB, CF8, CF8M
Operated typeHandwheel
Structure:Bellows seal for high temperature medium
Flange connection:EN1092 PN16, PN25, PN40
Medium:W.O.G
Temperature:-20 to 425°C
Applications

The opening and closing parts of stop valve and Globe valve are plug shaped valve discs. The sealing surface is flat or sea cone. The valve disc moves in a straight line along the center line of the valve seat. The movement form of the valve rod (common name: non-rising rod), as well as the lifting rotary rod type, can be used to control the flow of air, water, steam, various corrosive media, mud, oil, liquid metal, radioactive media and other types of fluids. Therefore, this type of shutoff valve is very suitable for shutoff or adjustment and throttling. Because the valve stem opening or closing stroke of this type of valve is relatively short, and it has a very reliable cut-off function, and because the change of valve seat opening is in direct proportion to the stroke of the valve disc, it is very suitable for flow regulation.

微信截图_20230212142203

Competitive Advantage

Construction features

1. Accord with GB standard, reasonable structure, reliable sealing, good performance and beautiful appearance.

2. Variety complete, packing and gasket materials reasonable matching, can according to customer's request to apply to all kinds of pressure, temperature and medium conditions, high pressure valve selects high quality alloy steel manufacturing, sealing surface using department too vertical (stellite) cobalt-based hard alloy, safe and reliable, stable performance and long service life.

3. The valve bonnet structure is reasonable, the wall thickness is strictly controlled and the test conforms to the national standard GB12234 and the American standard ANSI B16.34, the strength is high, the rigidity is good, the flow resistance is small.

4. Using wedge-type elastic gate structure, it is made of whole cast, with fine design and good sealing performance.

5. The stem is made of heat-resistant alloy steel with good mechanical properties and corrosion resistance and abrasion resistance.

6. Gate valves shall be fully resealed, which may be repaired or modified in unstopped working conditions.

7. The stem nut adopts the internal function structure, the ball bearing is set up with the connecting part of the bracket, the torque is small and the lifting is easy.

8. According to the requirements of users or engineering, the connection form should be reasonably selected, and various operation modes can meet different usage requirements.

Customer Questions & Answers
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