VMAL – Below seal globe valve

Model VWJ41H is an advanced version equipped with a metal bellows sealing mechanism, which is a key component of the valve. The bellows is welded and sealed between the valve bonnet and stem, creating a continuous metal barrier that prevents process fluid from leaking through the valve stem into the external environment, providing zero leakage.

Key Advantages

• Zero Leakage: The metal bellows serves as the primary sealing layer, eliminating the risk of process fluid leakage through the valve stem.
• Double Seal Design: In addition to the primary metal bellows seal, the valve features a secondary graphite packing seal, providing enhanced safety and reliability.
• Safe for Hazardous Media: Ideal for applications requiring a high level of safety and protection against the release of toxic, flammable, high-value fluids, as well as thermal oil systems and high-pressure steam applications.
• Extended Service Life: Protects the valve stem from corrosion caused by the process medium and surrounding environment.
• Assisted Handwheel: The ergonomic handwheel design allows for smoother and easier operation.
• Grease Nipple: Allows direct lubrication of the valve stem, stem nut, and bushing, ensuring smooth operation and simplifying maintenance.

Technical Specifications

• Model: VWJ41H
• Type: Bellows Seal Globe Valve
• Size: DN25 (1 inch)
• Connection: PN16 Flanged
• Body & Bonnet Material: GG25 Cast Iron
• Disc, Shaft & Seat Material: 2Cr13 Stainless Steel
• Maximum Operating Temperature: 250°C
• Stem Sealing Material: Metal Bellows Seal, primary + Graphite Packing, secondary
• Shaft Nut Material: Brass
• Operation: Handwheel Operated