MrPEX® plastic fittings are made from a blend of engineered high performance PolyPhenylSUlfone (PPSU) resin to achieve a long-term durable product. These PPSU fittings are durable, light weight, corrosion free, and resistant to chlorine and other substances that may be present in today’s potable water supply. The Sulfone resin has been used and refined over the past 20 years and has proven a very reliable replacement for brass and copper fittings. MrPEX® fittings are listed to ASTM F2159. MrPEX® Stainless Steel Press Sleeves and PEX Press tools are required and purchased separately.

Technical Data

Material Operating Pressure Rating
PolyPhenylSulfone 180 degrees F @ 100 psi
Barb Size ID OD
1/2″ 0.32″ 0.47″
3/4″ 0.46″ 0.67″
1″ 0.62″ 0.86″

Standards

  • ASTM F2159
  • ASTM F877
  • NSF/ANSI 14
  • NSF/ANSI 61
  • NSF/ANSI 61 Annex G
  • CSA B137.5

Listings

  • IAPMO
  • UPC
  • cNSFuspw
F2159 PPSU Fittings_Image1
Part # Type A B C
4015050 1/2″ PEX to 1/2″ PEX 1.52″ 0.63″ 0.10″
4017575 3/4″ PEX to 3/4″ PEX 1.52″ 0.83″ 0.10″
4011010 1″ PEX to 1″ PEX 1.84″ 0.99″ 0.13″
Part # Type A B C D
4065050 1/2″ PEX to 1/2″ PEX 1.40″ 1.40″ 1.16″ 1.16″
4067550 3/4″ PEX to  1/2″ PEX 1.64″ 1.64″ 1.26″ 1.26″
4067575 3/4″ PEX to  3/4″ PEX 1.64″ 1.64″ 1.26″ 1.26″
4061010 1″ PEX to 1″ PEX 2.00″ 2.00″ 1.53″ 1.53″
Part # Type A B C
4040500 1/2″ PEX 0.84″ 0.63″ 0.13″
4040750 3/4″ PEX 0.85″ 0.83″ 0.13″
4041000 1″ PEX 1.00″ 0.98″ 0.14″
Part # Type A B C
4025050 1/2″ PEX to 1/2″ NPT 1.68″ 0.87″ 1/2″ NPT
4025075 1/2″ PEX to 3/4″ NPT 1.70″ 1.00″ 3/4″ NPT
4027575 3/4″ PEX to 3/4″ NPT 1.70″ 1.00″ 3/4″ NPT
4021010 1″ PEX to 1″ NPT 2.04″ 1.31″ 1″ NPT
Part # Type A B C D
4035050 1/2″ PEX to 1/2″ FPT 1.59″ 1.08″ 1.02″ 1/2″ NPT
4037575 3/4″ PEX to 3/4″ FPT 1.66″ 1.25″ 1.25″ 3/4″ NPT
4031010 1″ PEX to 1″ FPT 1.74″ 1.47″ 1.46″ 1″ NPT
Part # Type A B C
4095055 1/2″ PEX x 1/2″ PEX x 1/2″ PEX 2.32″ 1.16″ 1.16″
4095057 1/2″ PEX x 1/2″ PEX x 3/4″ PEX 2.52″ 1.26″ 1.26″
4097555 3/4″ PEX x 1/2″ PEX x 1/2″ PEX 2.40″ 1.16″ 1.16″
4097557 3/4″ PEX x 1/2″ PEX x 3/4″ PEX 2.52″ 1.26″ 1.26″
4097571 3/4″ PEX x 3/4″ PEX x 1″ PEX 2.6″ 1.3″ 1.36″
4097575 3/4″ PEX x 3/4″ PEX x 1/2″ PEX 2.52″ 1.26″ 1.26″
4097577 3/4″ PEX x 3/4″ PEX x 3/4″ PEX 2.52″ 1.26″ 1.26″
4091011 1″ PEX x 1″ PEX x 1″ PEX 3.05″ 1.53″ 1.53″
4091015 1″ PEX x 1″ PEX x 1/2″ PEX 2.68″ 1.34″ 1.33″
4091017 1″ PEX x 1″ PEX x 3/4″ PEX 2.68″ 1.34″ 1.33″
4091071 1″ PEX x 3/4″ PEX x 1″ PEX 2.82″ 1.48″ 1.53″
4091077 1″ PEX x 3/4″ PEX x 3/4″ PEX 2.68″ 1.34″ 1.33″
Part # Type A B C D
4040500 1/2″ PEX to 1/2″ NPT Elbow 1.46″ 1.16″” 0.75″ 1/2″ NPT
Part # Type A B C D
4040500 1/2″ PEX to 1/2″ NPT Straight 1.47″ 0.75″” 0.13″ 1/2″ NPT

Technical Data

Material: Stainless Steel

Standards

  • ASTM F877

Listings

  • cNSFuspw
MrPEX® F2159 & F1807 PEX Stainless Steel Sleeves

MrPEX® Press Sleeves can be used with both PPSU 2159 and brass F1807 fittings. MrPEX® Press Sleeves come with a witness hole to confirm PEX depth.

Size Part # Height ID OD
1/2″ 4000500 0.58″ 0.63″ 0.71″
3/4″ 4000750 0.60″ 0.88″ 0.93″
1″ 4001000 0.73″ 1.14″ 1.21″