The pressure/temperature ratings of 1” to 12” PSI Plastic-Lined Piping Products conform to standard ANSI codes and specifications per the appropriate metallurgy.  See Figure 1.  The pressure/temperature ratings for lined piping with ANSI B16.5 Class 300 flanges are adjusted to account for plastic raised faces on pipe and fittings, and are lower than actual ANSI B16.5 Class 300 pressure/temperature ratings.  

PVDF (1”-8”) and PP (1”-12”) pipe and fittings have been full vacuum rated at their maximum service temperature and can be used at full vacuum within their operating temperature ranges.  Standard 1” -12” PTFE pipe and fittings are available to provide Full Vacuum / 450° F performance, if so specified.  Some pipe and fittings may have a reduced vacuum rating.  1”-4” PFA-lined pipe and fittings are rated for full vacuum to 450° F.  6” and 8” PFA-lined pipe and fittings are non-vacuum rated.  

Figure 1: Working pressures for PSI plastic-lined pipe and fittings (includes PTFE-lined stainless steel pipe)  

Curves

  1. Class 150 stainless steel (Steel Flanges) (Type 304L) ANSI B16.5.
  2. Class 150 ductile iron/plastic lined ANSI B16.42.
  3. Class 150 cast steel/plastic lined ANSI B16.5.
  4. Class 150 stainless steel/plastic (Steel Flanges) lined ANSI B16.5.
  5. Class 150 carbon steel ANSI B16.5.
  6. Class 300 cast steel/plastic lined.
  7. Class 300 stainless steel/plastic (Steel Flanges) lined.
  8. Class 300 stainless steel (Steel Flanges) (Type 304L) ANSI B16.5.
  9. Class 300 cast steel ANSI B16.5.

  Maximum temperatures may be reduced depending on the aggressiveness of the fluid being handled.  

Notes:

1.  All vacuum data reflects testing done per ASTM F1545.

2.  1”-8” fittings meet or exceed pipe liner thickness and vacuum ratings for same size and liner material.  Vacuum ratings 

    for some 10” and larger fittings  may have vacuum limitations.  Consult factory.

3.  Vacuum ratings may not apply for special angle elbows, sight flow indicators and laterals, crosses and eccentric reducers that are 6” and above. 

      Consult factory.

4.  Certain chemicals may affect vacuum ratings.  Consult factory.