Stack-mounting pilot-operated check valves

ISO sizes 2 … 7, series SRE… / SREA… / SREZ…

Pilot-operated check valves prevent any flow in one direction. In the opposite direction, free flow with minimal pressure drop is possible. By applying a defined pilot pressure at X, the checked flow direction is held open as long as the pilot pressure is maintained.

Stack-mounting valves with ISO / DIN / NFPA / ANSI interface.

Advantages

• High pressure rating
• Virtually zero leakage
• Small opening pressures

Technical data

Symbol

Type

Q max.
(l/min)

P max.
(bar)

Opening
pressure ratio

Interface

25

60

120

300

250

315

315

350

1 : 3,3

1 : 6

1 : 6

1 : 13

25

60

120

300

250

315

315

350

1 : 3,3

1 : 6

1 : 6

1 : 13

25

60

120

300

250

315

315

350

1 : 3,3

1 : 6

1 : 6

1 : 13