Safety valve, type 851, gunmetal

Angular shape, spring-loaded, body red brass, spring: stainless steel, seal cap prevents unauthorized changing of set

pressure, set pressure: 0,5 … 50 bar

K: twist-type lifting mechanism, L: Lifting lever, O: without lifting device

Seat: N: NBR (-30°C … +130°C), F: FKM (-20°C … +200°C), P: PTFE (-60°C … +225°C), E: EPDM (-40°C … +170°C)

with extra costs: m: metal (-60°C … +225°C)

Type 851 sF: non-gastight version of spring housing, for neutral liquid without counter pressure

Type 851 sG: non-gastight version of spring housing, for neutral air, vapours, gases without counter pressure

Type 851 bF: with bellows, for neutral and non-neutral liquid and/or counter pressure up to 4 bar

Type 851 bG: with bellows, for neutral and non-neutral air, vapours, gases and/or counter pressure up to 4 bar

Type 851 tFO / tGO: gastight version of spring housing, for neutral and non-neutral media without counter pressure,

without lifting device

Type 851 tbFO / tbGO: gastight version with bellows, for neutral and non-neutral, flammable, toxic and

environmentally hazardous media and/or counter pressure up 4 bar, without lifting device