Lüdecke - Main Catalogue Page 265
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Valve Designs The couplings are available in different valve designs. Single Shut-off Straight-Through ➛ ➛ ➛➛ Female part (Coupling) Male part (plug) • No valve - neither within the coupling nor within the plug • Maximum flow rate • During disconnection: media will leak from the coupling and plug line Female part (Coupling) Male part (plug) • Straight-through plug • Coupling with valve • During disconnection: media might leak from the plug line Double Shut-off Dripless ➛ ➛ Female part (Coupling) ➛ ➛ Female part (Coupling) Male part (plug) • Valves on both sides (male/female) • During disconnection: media will stay in the hose of both connection lines, constant pressure is maintained • Valve construction designed for media flow from coupling to plug Male part (plug) • Valves on both sides (male/female) - without dead space volume • During disconnection: only a minimal film of the media will leak (no drops will form) Materials only works with premium materials which are customised to the application. Stainless Steel Steel (machining steel) Most of the processing industry couplings and fittings consist of stainless steel - a material with a special degree of purity. If products are used under tough conditions (i.e. in foundries), they need to be manufactured out of machining steel (hardened, nickelplated or zinc-plated). This material has good case-hardening properties and a long lifetime. Brass (plain/ nickel-plated) Seals Brass MS 58 (machining brass) is a very sturdy material which guarantees high durability and is perfectly suited for galvanization (nickel, chrome). Depending on the requirement, offers different types of sealings made of NBR, EPDM, FKM or FFKM. Various Applications The processing industry products can be utilized in pharmacy, medical, control, measurement and regulation technology, food and chemical industry, temperature regulation technology as well as in machinery and plant construction. 265
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