safety relief valves
HON 835
HON 835 is a Type-B direct-acting safety relief valve (SRV) according to DIN 33821. It is primarily used to relieve gas leakage in gas pressure regulators to prevent the SSV from being actuated by accident.
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- Function Class B
- Simple construction, easy to maintain
- Installation irrespective of position
- High response accuracy
- Suitable for non-aggressive gases, other gases on enquiry
- CE registration according to PED
- Max. admissible pressure PS: 25 bar
- Max. operating pressure pmax: up to 25 bar
- Outlet pressure range: Wd 5 mbar to 2 bar
- Valve seat Ø
- 3 mm (measuring unit 0)
- 25 mm (measuring units 1 and 2)
- Connection
- Inlet and outlet:
- PN 5: internal thread G 1
- PN 16 and 25: Pipe connections according to DIN EN ISO 8434-1 (DIN 2353)
- For pipe sizes:
- 12 mm (measuring unit 0)
- 28 mm (measuring units 1 and 2)
- Inlet and outlet:
Environmental Conditions
- Ambient Temperature Range
- -15 to +60 deg C
- Setting Range
- 0.03 to 2 bar
- Maximum Operating Pressure
- Up to 25 bar kilopascal
Mechanical & Physical Properties
- Valve Seat Diameter
- 3 mm (measuring unit 0), 25 mm (units 1 and 2)
Processing & Performance Metrics
- Maximum Admissible Pressure
- 25 bar
Standards & Certifications
- Explosion Protection
- They are not subject to ATEX 95 (94/9/EC). All electrical components used with this device fulfill the ATEX requirements
- Approvals
- DIN 3381, SEP according to PED
Technical Specifications
- Connection Type
- PN 16 and PN 25: Screw connections (DIN 2353), Pipe dia. 12 mm (unit 0), 28 mm (unit 1 and 2)
- PN 4: Internal thread G 1
Material Specifications
- Body Material
- Cast Aluminum Alloy
Applications & Compatibility
- Applications
- For natural gas (DVGW G 260), other gaseous media on request
- Leakage relief valve in gas pressure regulating stations
Environmental Conditions
- Ambient Temperature Range
- -15 to +60 deg C
- Setting Range
- 0.03 to 2 bar
- Maximum Operating Pressure
- Up to 25 bar kilopascal
Mechanical & Physical Properties
- Valve Seat Diameter
- 3 mm (measuring unit 0), 25 mm (units 1 and 2)
Processing & Performance Metrics
- Maximum Admissible Pressure
- 25 bar
Standards & Certifications
- Explosion Protection
- They are not subject to ATEX 95 (94/9/EC). All electrical components used with this device fulfill the ATEX requirements
- Approvals
- DIN 3381, SEP according to PED
Technical Specifications
- Connection Type
- PN 16 and PN 25: Screw connections (DIN 2353), Pipe dia. 12 mm (unit 0), 28 mm (unit 1 and 2)
- PN 4: Internal thread G 1
Material Specifications
- Body Material
- Cast Aluminum Alloy
Applications & Compatibility
- Applications
- For natural gas (DVGW G 260), other gaseous media on request
- Leakage relief valve in gas pressure regulating stations
- Ambient Temperature Range : -15 to +60 deg C
- Valve Seat Diameter : 3 mm (measuring unit 0), 25 mm (units 1 and 2)
- Setting Range : 0.03 to 2 bar
- Maximum Operating Pressure : Up to 25 bar kilopascal
- Maximum Admissible Pressure : 25 bar
- Explosion Protection : They are not subject to ATEX 95 (94/9/EC). All electrical components used with this device fulfill the ATEX requirements
- Connection Type : PN 16 and PN 25: Screw connections (DIN 2353), Pipe dia. 12 mm (unit 0), 28 mm (unit 1 and 2)|PN 4: Internal thread G 1
- Body Material : Cast Aluminum Alloy
- Approvals : DIN 3381, SEP according to PED
- Applications : For natural gas (DVGW G 260), other gaseous media on request|Leakage relief valve in gas pressure regulating stations
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