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Unival® BUTTERFLY VALVES Seats - Application Guide Data Sheets Manual NBR Butadiene Acrylonitrile (-20ºC) -10ºC ... 75ºC (90ºC) Lubricating oil, cutting oils, fuel oils, animal and vegetable oils, aviation kerosen, LPG, oily air. Generally resistant to oils and solvents. Limited resistance to ozone and wheather. EPDM Ethylene Propylene Diene (-20ºC) -5ºC ... 120ºC (130ºC) Salts in water, diluted acids, alkaline solutions, ester, ketones, alcohols, glycols, hot water, intermittent steam, sterilisation Good resistance to ozone and wheather. It is attacked by hydrocarbon solutions, chlorinated hydrocarbons and other petroleum based oils. Viton (FPM) Vinylidenefluoride-hexafluoro-propyleneco-polymer (-20ºC) -10ºC ... 150ºC (180º) Strong and weak mineral acids, aliphatic hydrocarbons, chlorine gas, oils, aliphatic acids, phosporic acids, ozone, certain aromatic solvents Not suitable for hot water, steam and dry heat. Hypalon (CSM) Chlorosulfonated polyethylene (-20ºC) -10ºC ... 110ºC (130ºC) Good chlorine and weather resistance. Low resistance to oil and fats Silicone (-40ºC) -20ºC ... 170ºC (190ºC) Good wheather resistance. Recommended for hot air applications. Not resistant to mineral oils. Moderate mechanical properties. PTFE PTFE/EPDM (-20ºC) -5ºC ... 110ºC (120ºC) - PTFE/NBR (-20ºC) -10ºC ... 80ºC (90ºC) Excellent resistance to chemicals or biopharmaceuticals, strong acids and solvents, alkalies and salts in water. Excellent resistance to weather. FEP -20ºC ... 120ºC (130ºC) Similar properties to PTFE but more translucent and with lower porosity, so most suitable for concentrated mineral acids, aromatic, aliphatic and chlorinated solvents. PFA -20ºC ... 180ºC (190ºC) Similar to FEP but with smoother surface texture and for higher continuos service temperatures. Breaf Peak Temperature Working Temperature Temperature ranges given just for reference. Body pressure-temperature rating also to be considered for valve selection. Please consult our Technical Department for a particular application. Data subject to change without prior notice 14
Unival® BUTTERFLY VALVES Valve Coding Data Sheets Manual V F 7 0 0 P X/Y X/Y X/Y 0 0 0 5 0 VF = UNIVAL BUTTERFLY VALVE IDENTIFICATION 050 = Valve size DN50 100 = Valve size DN100 700 = WAFER TYPE CARTRIDGE SEAT 701 = WAFER TYPE WITH EDGE-BOOT SEAT 751 = LUG TYPE WITH EDGE-BOOT SEAT 750 = LUG TYPE WITH BACK SEAT 760 = GROOVE END TYPE 790 = DOUBLE FLANGE TYPE 7U = U-TYPE 791 = DOUBLE ECCENTRIC TYPE 00 Special Requirements P = WITH LEVER R = WITH WORM GEAR B = BARE SHAFT XXX G* = DISC IN DUCTILE IRON GGG40 I* = DISC IN ST. STEEL AISI316 B* = DISC IN AL-BZ F* = DISC COATED FEP P* = DISC COATED PFA *E* = SEAT IN EPDM *N* = SEAT IN NBR *V* = SEAT IN VITON *S* = SEAT IN SILICON *T* = SEAT IN PTFE *F* = SEAT IN FEP *P* = SEAT IN PFA *H* = SEAT IN HYPALON YYY G* = BODY IN DI GGG40 A* = BODY IN CS WCB I* = BODY IN ST.ST. AISI316 *G* = DISC IN DI GGG40 NICKEL PLATED *I* = DISC IN ST.ST. AISI316 *B* = DISC IN AL-BZ *F* = DISC COATED FEP *P* = DISC COATED PFA *N = SEAT IN NBR *T =SEAT IN PTFE *V = SEAT IN VITON *F = SEAT IN FEP *S = SEAT IN SILICON *P = SEAT IN PFA *H = HYPALON *0 = BODY IN GG25 Data subject to change without prior notice 15
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Untitled - COMEVAL

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