Bellows Seal Valve – Key Features & Advantages
Double-Layered Safety
Primary Seal: Metal bellows (stainless steel, Inconel) welded to the stem and bonnet, ensuring zero fugitive emissions.
Secondary Seal: Redundant graphite or elastomeric packing for fail-safe protection.
Maintenance-Free Operation
No stem packing adjustments required, reducing downtime and lifecycle costs.
Corrosion-resistant bellows withstand extreme temperatures (-200°C to +600°C) and pressure cycles.
Zero Environmental Leakage
Critical for handling hydrogen, chlorine, ammonia, or cryogenic fluids.
Extended Service Life
Bellows absorb stem movements, preventing wear from thermal expansion or vibration.
Clean Process Integrity
Ideal for pharmaceuticals, semiconductors, and food-grade applications.
Bellows Seal Valve – Zero-Leakage Solution for Hazardous Media
A bellows seal valve is a precision-engineered valve designed with a hermetically sealed metal bellows that isolates the stem from the process fluid. This eliminates traditional packing seals, providing unmatched leak prevention for toxic, volatile, or high-purity applications.
Bellows Seal Gate Valve
Features
Bellows Seal Type
Extended Bonnet
Outside screw and yoke
Rising stem and non-rising handwheel
Flexible wedge, fully guided
Manual operation standard, gear operator and actuation available
Butt weld end
Standards
Design & Manufacture: API 600, API 6D, ASME B16.34
Face to Face: API 6D, ASME B16.10, EN 558, DIN 3202, BS 2080
Connection End: ASME B16.5, ASME B16.25, EN 1092, EN 12627, JIS B2220
Test : API 600, API 6D, EN 12266
Sizes: 2″ – 12″ (DN 50 – DN 300)
Pressure Rating: Class 150 – Class 600
Valve Materials: WCB, LCB, WC6, WC9, C12, C5, CF8, CF8M etc.
Operation: Handwheel, Gear, Pneumatic, Hydraulic and Electric actuator
API Bellows Seal Globe Valve
Features
Bellows Seal Type
Extended Bonnet
Outside screw and yoke
Rising stem and non-rising handwheel
Manual operation standard, gear operator and actuation available
Butt-weld end or flange end
Standards
Design&Manufacture: BS 1873, ASME B16.34
Face to Face: ASME B16.10, EN 558, BS2080
Connection End: ASME B16.5, ASME B16.25, EN 1092
Test and Inspection: API 598, EN 12266, BS 6755
Sizes: 1/2″ – 12″ (DN12 – DN300)
Pressure Rating: Class150 – Class900
Body Materials : WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M etc.
Operation: Handwheel, Gear, Pneumatic, hydraulic and Electric actuator.
Bellows Seal Gate Valve Extended Bonnet
Features
Bellows Seal Type
Extended Bonnet
Outside screw and yoke
Rising stem and non-rising handwheel
Flexible wedge, fully guided
Manual operation standard, gear operator and actuation available
Flange end: raised face or ring type joint
Standards
Design & Manufacture: API 600, API 6D, ASME B16.34
Face to Face: API 6D, ASME B16.10, EN 558, DIN 3202, BS 2080
Connection End: ASME B16.5, ASME B16.25, EN 1092, EN 12627, JIS B2220
Test : API 600, API 6D, EN 12266
Sizes: 2″ – 12″ (DN 50 – DN 300)
Pressure Rating: Class 150 – Class 600 (PN 16 – PN 100)
Body Materials: WCB, LCB, WC6, WC9, C12, C5, CF8, CF8M etc.
Operation: Handwheel, Gear, Pneumatic, Hydraulic and Electric actuator
DIN Bellows Seal Globe Valve
Features:
Bellows Seal Type
Extended Bonnet
Outside screw and yoke
Rising stem and non-rising handwheel
Manual operation standard, gear operator and actuation available
Butt-weld end or flange end
Standards:
Design & Manufacture: BS 1873, ASME B16.34
Face to Face: ASME B16.10, EN 558, BS2080
Connection End: ASME B16.5, ASME B16.25, EN 1092
Test and Inspection: API 598, EN 12266, BS 6755
Sizes: 1/2″ – 12″ (DN15 – DN300)
Pressure Rating: Class150 – Class900
Body Materials : WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M etc.
Operation: Handwheel, Gear, Pneumatic, hydraulic and Electric actuator.
China Bellows Seal Gate Globe Check Valves Manufacturer Provider Supplier Bellows Seal Valves
