Bellow Seal Globe Valve

Bellow seal globe valve is a reliable valve manufactured by Waits. The product can be used in urban heating, gas transmission, steam pipelines and large water conservancy projects. It has a price advantage and has been recognized by many overseas factory customers. It is widely sold in Italy, France, Spain in Europe, and Saudi Arabia, Iran, Israel in the Middle East.

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Product Description

The bellow seal globe valve is welded by automatic rolling welding to form a metal barrier between the fluid medium and the atmosphere, ensuring the zero leakage design of the valve stem. The internal structure of this valve is a bellows structure. The lower end of the stainless steel bellows is welded to the valve stem to prevent the process fluid from corroding the valve stem. The other end is placed between the valve body and the valve cover to form a static seal. The double sealing design is adopted. If the bellows fails, the valve stem packing will also avoid leakage. The bellows are welded to the valve stem to maintain stable operating performance and avoid valve stem vibration caused by valve plug vibration. It is most suitable for pipelines with steam, flammable, explosive, thermal oil, high purity, toxic and other media.

Implementation Standards

Design Standard	DIN 3356, ASME B16.34, GOST
Flange standards	DIN2543-2545，ASME B16.5，ASME B16.47
End Connection	RF, RTJ, BW, etc.
Inspection & Test	DIN 3230, API 598, GOST
Face to Face	DIN 3203, ASME B16.10, GOST
Pressure and temperature ratings	ASME B16.34
Fireproof test	API607, API6FA
Low leakage standards	ISO 15848-1, API 622
Anti-corrosion design	NACE MR 0103, NACE MR 0175

Application

Size	2"-24", DN50-DN600
Pressure Rating	Class 150-1500, PN10-PN260
Operating Temperature	-20℃~350℃
Application range	Tap water, sewage, construction, petroleum, chemical industry, food, medicine, textile, electricity, shipbuilding, metallurgy, energy system, etc.
Operator	HW, Gear, Electric, Pneumatic, etc.
Body Material	Carbon Steel, Stainless Steel, Duplex Stainless Steel, Alloy Steel, Monel, Al Bronze, etc.
Sealing surface	Body, body cladding iron-based alloy, cladding hard-based alloy
Valve stem	F6A F304 F316 F51 F53 Monel K500
Valve stem nut	Copper Alloy
Packing	Flexible graphite, graphite asbestos packing, polytetrafluoroethylene...

Advantages of bellow seal globe valve

1. Reasonable product structure, reliable sealing performance, beautiful appearance;

2. Co-based hard alloy surfacing on the sealing surface, good wear resistance, corrosion resistance, anti-friction performance, long service life;

3. Valve stem tempering and surface nitriding treatment, with good anti-corrosion and anti-friction performance;

4. Bellow seal globe valve double seal, more reliable performance;

5. Valve stem lifting position indication, more intuitive;

6. Parts material, flange and butt welding number size can be reasonably selected according to actual conditions or user requirements to meet various engineering needs.

Product features of bellow seal globe valve:

1. Double sealing design (bellows + packing). If the bellows fails, the valve stem packing will also avoid leakage and meet international sealing standards;

2. No fluid loss, reduce energy loss, and improve factory equipment safety;

3. Long service life, reduce maintenance times, and reduce operating costs;

4. Strong and durable bellows sealing design ensures zero leakage of the valve stem and provides maintenance-free conditions;

5. The gas medium valve seat adopts PTFE soft sealing material to improve the sealing of this valve;

6. The high temperature resistant valve seat adopts conical hard seal to achieve zero leakage of airtight performance;

Bellow Seal Globe Valve