High Performance Double Offset Wafer Butterfly Valves – Series HG1
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- The hydrogen valve can be customized to suit your application and requirements:
- 9 different seat ring materials
- Several cleaning standards, including for technical gases
- Requirements for the hydrogen sector:
- Tightness inside (absolutely tight)
- Tightness outside (technically permanently tight)
- High pressure resistance
- Resistance to hydrogen embrittlement
- Additional standards for hydrogen ball valves:
- Special cleaning procedures
- Separate assembly
- Careful packaging
- Clear labeling
- Certificates / Approlvals:
- PED 2014/68/EU, ATEX 2014/34/EU Zone 0 IIC, Fire Safe ISO 10497, TA-Luft, EC 1935/2004, FDA, USP Cl VI, SIL, and others – several cleaning standards, including for technical gases.
- The hydrogen valve can be customized to suit your application and requirements:
Key features
- Automation:
- Standard mounting flange according to EN ISO 5211
- Direct actuator mounting without interruption of the stem
- Variable and exchangeable for any actuator size
- Actuator protection against leakage
- Safety TA-Luft ISO 15848-1:
- Stem sealing can be re-tensioned beneath the mounting flange; thus, it can be readjusted without dismounting the actuator.
- Long service life:
- The insert ring of the body efficiently protects the seat ring from the direct medium flow and prevents wear such as erosion and abrasion.
- Reliability:
- Reliable sealing against high pressures and low torques due to the double offset design.
- Low wear switching characteristics.
- Exact and variable: Face-to-face dimension: EN 558 line 20/25/16
- Option: Design with groove / spring EN 1092, form D
- Precise mounting: Easy mounting due to centring aids for all standard flanges.
- Service-friendly: The axial centring of the stem can be reached easily and is prepared for later service.
- Efficient and safe:
- GEFA-MULTITOP Efficient automation with variable interface without interruption of the stem.
- Pivoting angle limitation and optical position indicator at the stem prevents wrong position of the stem during servicing.
- The cylindrical screws fix the mounting flange without transferring torques (driving torques).
- The clamping sleeves guarantee a clearance-free connection between the mounting flange and the body and transfer the driving torques.
Technical specifications
- Sizes: DN 50 – DN 800
- Pressure ratings: PN 6 – 40, ASME Cl 150/300, PS 25 or PS 40
- Temperature range: -50 °C to + 400 °C
- Face-to-face dimension DIN EN 558 line 20, 25, 16 API 609 table 1
- Connections:
- Intermediate flange valve that can be flanged on both sides
- Double flange variant
Materials
- Body: 1.0619, 1.4408
- Valve disc: 1.0619/nickel-plated, 1.4408, 1.4408/nitrated
- Shaft: 1.4571
- Seat ring: PTFE/glass, PTFE/1.4571/Graphite, PTFE/1.4571/nitrated + Graphite
- Bearing bush: 1.4401/PFTE, 1.4571/nitrated
- Package: PTFE, Graphite
- Insert ring: C-steel, 1.4571
- For other material requirements, please contact the Vendor!
Application areas
- Production
- Power-to-gas, electrolysis,
- Steam reformation, Pyrolysis
- Infrastructure
- Gas pipelines
- Gas storage
- Applications
- Transport-/distribution network
- Commercial/industrial use
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Contact us
- GEFA Processtechnik is your reliable partner for hydrogen applications with extensive experience. Interested? Please contact the vendor by filling in the contact vendor form and request for quote form.
