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Fusible PVC™ - Fusible C-900®, Fusible C-905®, FPVC®

Fusible PVC™ products are segmented into 3 product lines

Pipe TypeSizes (Nominal OD)SeriesDimension Ratios (DR)UsesColor
Fusible C-900®4" - 12"DIPSDR 14, 18, 25Potable Water AWWA C900Blue
Fusible C-905®14" - 36"DIPSDR 14, 18, 21, 25, 32.5, 41Potable Water AWWA C905Blue
FPVC®4" - 36"DIPS, IPS, or ScheduleDR 14, 18, 21, 25, 26, 32.5, 41 and Sch.40, Sch.80Non-Potable Water or Potable Water Applications not in C900/C905 DimensionsBlue, Purple, Green, White, Grey

*Not all diameters are extruded to all listed DR's. Please check our pipe dimensional data for available sizes.

PVC Formulation:

  • The Plastics Pipe Institute (PPI) publishes the industry standard for PVC formulation for pressure pipe in its Technical Report #2 (TR-2)
  • Based on over 40 years of testing, PVC pressure pipe made to PPI TR-2 will have a Hydrostatic Design Basis (HDB) of 4000 psi - a basic requirement of PVC pressure pipe.
  • The UGSI formulation is the result of determining the right ingredients and the amounts that are optimal for fusion with the UGSI fusion process and in conformance to PPI-TR-2
  • UGSI's specific formulations are proprietary and patents are pending.
  • UGSI's proprietary formulations meet C900/C905 and NSF 61 requirements.


  • PVC fusion is performed on industry standard fusion equipment - which in some cases has been modified slightly
  • The fusion equipment must be in good mechanical, hydraulic, and electrical condition for use in Fusible C-900®, Fusible C-905® and FPVC® applications
  • All fusions are accomplished with a datalogger which records time and pressure for the duration of the fusion process. Initial heat plate temperature is also measured and recorded.
  • Each fusion joint takes approximately 1.5 to 2 minutes per diameter-inch to be completed or about the same amount of time as an HDPE fusion joint. Site conditions, weather, pipe handling, etc. can affect the length of time to complete a fusion joint.
  • All PVC fusion technicians are trained and qualified to the UGSI fusion process. Fusion qualifications are for specific pipe sizes and for a length of time, normally one year. Refresher training after each year is required based on level of experience.
  • Testing of the fusion joint has been done in accordance with ASTM standards.
  • Tensile-strength testing across butt-fused joint is done per ASTM D638.
  • Burst testing of fused sections is done per ASTM D1599.
  • Fusion joints completed following UGSI procedures with UGSI formulated PVC pipe achieve the strength of the parent PVC pipe.


Applications for this technology cover every aspect of piping installations including both pressure and non-pressure situations in the water, sewer, electrical, industrial and telecommunications industries. Fusible C-900®, Fusible C-905® and FPVC® have been installed at over 5000 sites throughout the US, Canada, Mexico, the Caribbean and New Zealand.

  • Water Mains (AWWA C900, C905)
  • Gravity Sewer and Force Mains
  • Process Water
  • Water Reuse
  • Irrigation and Raw Water
  • Storm Drains
  • Electrical and Fiber Optic Conduit
  • Casings

Features & Benefits:

Fusible C-900®, Fusible C-905® and FPVC® pipes are often installed by cost saving trenchless methods including:

  • Horizontal directional drilling
  • Sliplining
  • Pipe bursting

Fusible C-900®, Fusible C-905® and FPVC® are competitive for traditional direct bury methods in situations where the lines require shoring, restrained joints and/or cathodic protection - all of which are costly, labor intensive and reduce daily production rates. Fusible C-900®, Fusible C-905® and FPVC® offer these advantages:

  • Elimination of nearly all gasketed joints
  • Restrained joints without external harnesses
  • Larger flow area for the same outside diameter than HDPE
  • Standard ductile iron and industrial pipe sizes
  • Simple connection and reconnection
  • Sizes range from 3" through 36" with larger sizes (42" and 48") to be available in the near future

Material and mechanical advantages of Fusible C-900®, Fusible C-905® and FPVC® include:

  • PVC is today's most widely utilized pipe material in the United States
  • Fusible PVC™ pipe provides a monolithic, fully restrained, gasket free, leak-free piping system
  • PVC has superior stiffness (modulus) compared to other plastic pipe which limits long term deformation under soil load
  • High tensile strength (ASTM D638) of the fused joint (up to 7000 psi) allows for higher safe pulling stresses and consequently longer installation pull-in lengths
  • Low wall thickness for given pressure requirement translates into highest flow per outer diameter (OD) dimension
  • Fusible PVC™ has a specific gravity of 1.40 - it will not float in a flooded trench
  • PVC material properties have low time dependencies - the properties do not change over time - no pull-in relaxation period for example
  • Standard waterworks fittings are used to tap, connect and change direction on Fusible PVC™ pipe systems - eliminating the use of expensive transition fittings or fused-on fittings
  • PVC resists hydrocarbon permeation better than other thermoplastic pipe systems (AWWA Research Foundation)
  • PVC is more resistant to water disinfectant induced oxidation than other thermoplastic pipe systems
  • PVC has been used for over 50 years - owner and contractor familiarity of the pipe is well established