85840/85850

2/2-way piston valves
SIL 2/SIL 3

Technical features

Medium	Air, water, gases according to DVGW data sheet G 260 with seat seal FPM, oils and other fluids on request
Switching function	Normally closed
Operation	Solenoid operated, with forced lifting
Mounting	Preferably solenoid vertical on top
Flow direction	Determined
Port size	G1/4, G3/8, G1/2, G3/4, G1, G1 1/4, G1 1/2, G2 1/4 NPT, 3/8 NPT, 1/2 NPT, 3/4 NPT, 1 NPT, 1 1/4 NPT, 1 1/2 NPT, 2 NPT
Operating pressure	0 … 25 bar (0 … 362 psi)
Fluid temperature	–10 … +60°C (+14 … +140°F)
Ambient temperature	–10 … +50°C (+14 … +122°F)
Qualification approval	Single-channel safety-related systems in 85840 accordance with DIN EN 61508 / 61511 up to and including SIL 2 and up to and including SIL 3 in multi-channel systems.
Material	Body: Stainless steel (1.4408) Seat seal: NBR Internal parts: Stainless steel, PTFE/carbon