[labnetwork] joining long PVDF pipe runs

[Iulian Codreanu]

Good Morning.

We are trying to determine how to best join long runs of PVDF pipe on 
our ultrapure water system (we are trying to achieve Type E-1.1 per ASTM 
D5127).  We are aware of the following methods:
- fully welded system
- systems using flanges
- systems using unions
- systems using GF sanitary couplings with clamps

Knowing how other University Fabs do it would be very helpful in making 
a decision (affecting water quality, cost, and schedule) and thus your 
input will be much appreciated.

Iulian
-- 
iulian Codreanu, Ph.D.
Director, Penn NanoFab
200 South 33rd Street
Room 376 GRW Bldg
Philadelphia, PA 19104-6314
P: 215-898-9308
F: 215-573-2068
www.seas.upenn.edu/~nanofab