DKV BELLOWS GLOBE VALVE BANGLADESH BD

The DKV Bellows Seal Globe Valve is an industrial zero-leakage shut-off valve designed specifically for high-temperature, toxic, volatile, and high-pressure media pipelines. Built according to international DIN / EN standards, DKV bellows valves utilize a flexible stainless steel bellows seal element welded between the stem and valve bonnet, completely eliminating fugitive stem emissions and gland packing leakage.

Equipped with a secondary graphite gland packing seal for backup safety, DKV bellows globe valves are widely utilized across steam boilers, thermal fluid systems, chemical processing, and power plants where environmental protection and energy conservation are paramount.

 

Key Features & Benefits

• Zero Stem Emission (100% Hermetic Seal): Multi-ply stainless steel bellows forms a durable physical barrier preventing fluid leakages through the packing box.

• Double-Sealing Safety Design: Combines a primary bellows seal with a secondary graphite packing gland for failsafe operation.

• Energy-Saving Performance: Prevents costly steam or thermal oil losses, optimizing thermal plant operating efficiency.

• Maintenance-Free Operation: Requires no periodic tightening of gland packing nuts under continuous thermal cycling.

• Position Indicator & Lock: Includes visual open/close position indicator and anti-rotation device to prevent bellows twisting during manual operation.

Key Technical Specifications

• Brand / Series: DKV Valve Series

• Standard Design: DIN 3356 / EN 13709 / BS 5160

• Face-to-Face Standard: DIN EN 558-1 Series 1 (F1) / EN 1092-1

• Nominal Diameter Range: DN15 to DN400 (1/2" to 16")

• Pressure Ratings (PN): PN16, PN25, PN40, Class 150, Class 300

• Body Materials:

  • Cast Iron (GG25 / EN-GJL-250)

  • Ductile Iron (GGG40.3 / EN-GJS-400-18-LT)

  • Cast Carbon Steel (GS-C25 / 1.0619 / WCB)

  • Stainless Steel (1.4308 / 1.4408 / CF8 / CF8M)

• Bellows Material: SS304 / SS316L / Hastelloy

• Disc / Seat Material: Hardened Stainless Steel 13Cr / Stellite Faced

• Connection Ends: Flanged Ends (RF), Butt Weld (BW)

• Medium Temperature Range: -20°C to +400°C (up to +450°C for cast steel)

Common Target Applications

DKV bellows seal globe valves are widely specified across critical industrial piping loops:

• High-Pressure Superheated Steam Networks

• Thermal Oil & Heat Transfer Fluid Lines

• Toxic, Hazardous, and Flammable Chemical Services

• Power Plants & Condensate Systems

• Refrigeration, Ammonia, and Gas Supply Pipelines