Product description
	PTFE-lined lug type butterfly valve, centric design, for installation between flanges DIN EN 1092-1, PN 10/16, ANSI 150 lbs. Two-piece body, self-centering, one-piece disc/stem. DN 350 – DN 600

	Approvals
	TÜV certified according to DIN EN ISO 9001:2000 Controlled manufacturing through AD 2000 - WO/TRD 100 CE identification complies with the safety standards of the European pressure equipment directive PED 97/23/EC GOST-R Certificate for the Russian Federation Pressure test: DIN EN12266-1, P10/P11/P12-A DIN 3230,T3 – BA/BO-1, DIN3230,T5,T6 Approvals: Germanischer Lloyd, Lloyd´s Register of Shipping, Det Norske Veritas (DNV)

	Product features
	On the numbered markings you receive further information.

	Pressure-temperature range diagram

	Product advantages
	Very maintenance friendly Easy exchange of wearing parts due to the two-piece body, therefore low maintenance costs Excellent diffusion and corrosion resistance due to PTFE seat-ring in solid version according to DIN 3354, lined all the way round, thus guaranteeing permanent sealing at the stem output and in the bore Very aggressive and corrosive media are safely shut-off and controlled Valve design cavity-free makes simple sterile cleaning possible and choice of body material independent from the medium Long service life seals tightly at full differential pressure even with very high switching cycles and varying temperatures Excellent bubble-tightness Body lined completely with PTFE (at least 3 mm) with the seat-ring as a multi-functional sealing element, easily exchangeable, maintenance-free, with long service life No frictional electricity (ATEX) due to the neutral characteristic of the PTFE/PFA materials touching the product Absolutely maintenance-free seal system The spring-loaded pressure bearings, integrated in the seat-ring, ensure a pressure-stable sealing to the outside, the bearing with O-ring prevents foreign substances from penetrating from the outside Independent primary and secondary seal guarantees maximum tightness to the atmosphere according to TA-Luft requirements Universal range of application thanks to the absolutely cavity-free structure and the physiologically neutral characteristic of the PTFE/PFA materials touching the product, which makes its use typical in the food and pharmeceutical industries Economic and easy assembly of all actuator types The standard top flange according to DIN/ISO 5211 makes it possible to mount all common actuator types

	Applications
	Water / Sewage Engineering Food industry Chemical and petrochemical industry Colouring, Varnish, Dyeing factories

	Technical data
	Nominal sizes: DN 350 – DN 600 PTFE-lined lug type butterfly valve for installation between flanges DIN EN 1092-1, PN 10/16, ANSI 150 lbs Two-piece body self-centering, one-piece disc/stem Temperature range: -30°C to +200°C depending on the seat material Control range: 10° - 90° opening angle 15° - 70° linear characteristic Bubble-tight at full differential pressure Face-to-face dimension: EN 558-1 line 20 DIN 3202-K1 Top flange: DIN 3337 - ISO 5211

	Materials
	Body: Material: Code: Stainless steel 1.4301/1.4308 63 Stainless steel 1.4571/1.4408 66 Grey cast iron GG 25 22 Grey cast iron, Gotekplast-coated 72 Ductile iron GGG 40.3 24 Cast steel GS-C25 44     Disc: Material: Code: Alloy C 93 Alloy C 22 92 Stainless steel 1.4581/1.4408 66 Stainless steel, polished 31 PTFE-lined 77 Titanium 94     Seat ring: Material: Code: PTFE T PTFE / carbon TK UHMWPE U

	Data sheets/documentation
	Downloads / documents   Description PDF-Download Language Dimensions DN350-500 K-Dimensions DN350-500 with cast iron gear operator Materials K-Torques K-Pressure-temp-range diagram PTFE-seated valves K-Flow coefficients Kv Installation Installation