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DescriptionMaterial:Housing and cap brass. Spring stainless steel. Lift disc brass. O-ring NBR.Version:Flat seal asbestos-free.Note:Opening pressure 0.35 bar (±0,05).Functional principle:See 28038 vent screws with check valve.Drawing reference:
1) flat seal 2) O-ring 3) lift disc 4) vent hole 2x 5) cap
Special features:
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