DIN Bellows Globe Valve Extended Bonnet Manufacturer and Suppliers-Flowspec Luokai

DIN Bellows Globe Valve Extended Bonnet Descriptions

DIN bellows globe valve extended bonnet is our latest developed bellows sealed globe valve. Its biggest feature is that its metal bellows is sealed into the extended sealing space, which is not affected by medium, temperature and pressure at all. As a result this type of bellows globe valve has longer service life than the normal one. There is one more sealing protection on the bellows sealing, whose material is Ti that is one anti-high temperature and anti-corrosive material. In this case, there are three sealings for the valve stem packing. So this type of valve is more reliable and stable in the working, especially for the harsh mediums. Flowspec Luokai manufacturers and supply the DIN bellows globe valve extended bonnet according to DIN 3356 with sizes of 1/2″~16″ (DN15~DN400mm). Contact us today. Get the better prices. 30 years of experience. Great after-sales service.

1. FEATURES

Bellow seal element. The key part of bellows sealed globe valve is the bellow, which is roll welded with stem assembly on the bottom, and is roll welded with connecting cover on the top, forming a metal barrier between the mediums and atmosphere, and ensuring there is no leakage from the stem packing.
Tapered design valve disc. Valve sealing seat and mediums are designed to streamline, the disc can remove the impurity with better sealing and long service life.
Double seal design (bellows + packing). If bellows seal is failed, the stem packing can take sealing effects, preventing of stem leakage.
Patented central location design. Prevent the stem from being with tremble or noise, making the bellows has stable performance and long service life.
Valve bonnet is with grease nipple, which can lubricate the valve stem, nuts and stem sleeve directly.
Ergonomic design hand wheel, long service life, easier operation, safe and reliability.
Compound valve casting technology. Sand is mixed with binder and other additives, which make the rough casting is with fewer defects, such like pore, trachoma or cracks, but better tensile strength.

3. STANDARDS

Design & manufacturing: DIN 3356
Face to face: DIN 3202
Flanged ends: DIN 2543-2545
Inspection & testing: DIN 3230

2. TECHNICAL SPECIFICATIONS

PN1.6MPa / PN2.5MPa / PN4.0MPa
Size: 1/2″~16″ (DN15~DN400mm)
Materials: steel GS-C25, ductile iron GGG-40, 1.7363, stainless steel 1.4401, 1.4408, 1.4306, 1.4301
Applicable medium: water, hot oil, gas, steam
Applicable temperature: -29℃~+350℃

4. APPLICATIONS