There are non return valves with guts ring connection after German Institute for Standardization 2353 (EN ISO 8434-1)for the tube dimensions of the light series 6L to 42L and for the series 6S to 38S. Schwer offers also non return valves with external thread connection after German Institute for Standardization of ISO 228 in the sizes G 1/8" to G 1 1/2". There are also a multiplicity in valve feathers for different opening pressures.
Non return valves with one-piece valve housing and internal thread connection after German Institute for standardization of ISO 228 by the thread sizes G 1/8" to G 2" and the proved close system with soft sealing are standard.
According to connection variant and sealing material the valves are usable for many fluid-in the form or gaseous media as well as with raised temperatures (by special applications we ask our Servicecenter to contact). A 100% of functional control on flow and density before leave of the house the highest customer''s satisfaction guarantees for us.
Of course these valve types are also available in special materials on inquiry.