Valves for Polymer Industry0 pages

SchuF Polymer Valves
SchuF’s polymer valves were originally designed together with the polymer pioneers in the early
stages of polymer development. SchuF can proudly claim that it developed more original polymer
valves than anybody else. The first diverter, multiport and in-line sampling valves came from
SchuF as well as the first bottom drain and lift-plug valves. Additive injection for PET, steam injection, stripper and killer valves for PVC and PP were all developed in SchuF's offices.
SchuF's polymer valves are used to drain, feed, changeover, sample, inject, distribute and control
Polyester (including PET), Nylon, PVC, PP, PU, HDPE, LDPE and related polymers. Most applications are in Polyester plants.
In this brochure, we will look at valves and solutions for the above processes. More detailed leaflets are available for each valve type.
SchuF’s strengths are its flexibility of design and construction, it's unrivaled experience with the
media and the way all its valves can handle vacuum, high pressures and temperatures as well very
high viscosities, while eliminating "dead" and "slow" spaces, avoiding impurities and reducing
residence times.
SchuF offers cast valves to optimise polymer flow and forged or welded constructions where material integrity is of maximum importance. In all cases the flow path is optimised by the contour of
the valve's body and moving parts. SchuF can provide valves with and without replaceable seats
depending on start-up conditions. SchuF offers the best high pressure sealing by a judicious combination of different grades of stellite and a specially angled seat to achieve a tangential "zero
force" seal.
For vacuumtightness, special aluminium grade sealing rings offer leak tightness under 10-6
torr.l.sec-1 and a Helium vacuum test to prove it. We can offer you performance and seat testing
under low or high temperatures, und high pressure or vacuum, with Helium, Nitrogen or water ...
whatever is required.
SchuF is not only the first polymer valve company to have obtained ISO 9001 approval but also
the only one with TRD 801 Nr. 45 which allows us to design and build high pressure vessels.
In short SchuF offers unmatched experience and individual solutions to specific polymer handling
problems.

SchuF - the superior polymer valve!