Type 818 & 848 - Atmospheric Safety Valves


The range of safety Valves for compressed air and gas are compact, highly efficient and incorporate the exclusive Tutchtie-Seal Technology for repeatable bubble-tight sealing performance: designed for applications including air/gas compressors, specialist gas plants, chemical equipment and piping, pressure vessels, thermal relief and medial gases etc. 


These valves are manufactured in brass and offer a wide range of connections, for applications up to 250ºC.  Manufactured in accordance with a wide range of international standards and approvals such as TÜV (Germany) to AD Merkblatt A2, National Board UV Stamp to ASME Sections VIII Division 1, EAC customs union (Russia, Belarus and Kazakhstan), the Canadian CRN and compliant with the requirements of Pressure Equipment Directive, PED (CE Marked).



Part NumberInlet ConnectionRange (Bar)  Bore   MaterialFittingSeal
8180612231/4" BSP Taper4 to 366mmBrass
RotaliftViton
8188812231/4" BSP Taper3 to 218mmBrass
Rotalift
Viton
8188812533/8" BSP Taper3 to 218mmBrass
Rotalift
Viton
8188812831/2" BSP Taper3 to 21
8mmBrass
Rotalift
Viton
8188812731/2" BSP Parallel3 to 21
8mmBrass
Rotalift
Viton
8181008831/2" BSP Taper2.41 to 2110mmBrass
Rotalift
Viton
8181309133/4" BSP Taper2.8 to 2113mmBrass
Rotalift
Viton
8181509431" BSP Taper2.5 to 2115mmBrass
Rotalift
Viton
8488812231/4" BSP Taper3 to 218mmSt. Steel
Rotalift
Viton
8488812831/2" BSP Taper3 to 21
8mmSt. SteelRotalift
Viton
6mm Bore Safety Relief Valve 818061223

6mm Bore Safety Relief Valve 818061223

SKU: 818061223

6mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)4.0...

8mm Bore Safety Relief Valve 818881223

8mm Bore Safety Relief Valve 818881223

SKU: 818881223

8mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3.0...

8mm Bore Safety Relief Valve 818881253

8mm Bore Safety Relief Valve 818881253

SKU: 818881253

8mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3.0...

8mm Bore Safety Relief Valve 818881283

8mm Bore Safety Relief Valve 818881283

SKU: 818881283

8mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3.0...

8mm Bore Safety Relief Valve 818881273

8mm Bore Safety Relief Valve 818881273

SKU: 818881273

8mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3.0...

10mm Bore Safety Relief Valve 818100883

10mm Bore Safety Relief Valve 818100883

SKU: 818100883

10mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3...

13mm Bore Safety Relief Valve 818130913

13mm Bore Safety Relief Valve 818130913

SKU: 818130913

13mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3...

15mm Safety Relief Valve 818150943

15mm Safety Relief Valve 818150943

SKU: 818150943

15mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3...

8mm Bore Safety Relief Valve 848881223

8mm Bore Safety Relief Valve 848881223

SKU: 848881223

8mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3.0...

8mm Bore Safety Relief Valve 848881283

8mm Bore Safety Relief Valve 848881283

SKU: 848881283

8mm Nominal Bore Atmospheric Discharge Safety Relief Valve for Compressed Air & GasesNotes:Relieving pressure is set at +10%Reseating pressure is set at -10%FLOW TABLEGas (Air)Pressure (bar g.)3.0...

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