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



  • 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.

1. Standard top flange

ISO 5211/DIN 3337 allows simple mounting of all actuator types

2. Bearing

with secondary sealing

3. PTFE seat ring

in solid design according to DIN 3354, T5, diffusion stable, lined on all sides ensures permanent sealing to the stem exit and gate

4. Elastomer "spring element"

Exactly fitted elastic ring of silicone or EPDM behind the PTFE-seat ensures flexible sealing of the shut-off

5. PFA-coated disc

In transfer moulding, solid PFA-coated (min. 3mm) stainless steel carrier with stem protection-coating in the sealing area

6. Two-piece body

Standard length DIN EN 558-1 line 20 (DIN 3202 K1) Highly service friendly, simple exchange of wearing parts

7. Primary seal

integrated in the seat, provides play-free and pressure stable sealing to the outside. Pressure is applied by the spring loaded bearings.

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 roand, 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 industrys

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

Application range

Industries and 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

at full differential pressure

Face-to-face dimension:
EN 558-1 line 20
DIN 3202-K1

Top flange:
DIN 3337 - ISO 5211


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
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 / carbon TK