Zurn PEX Plumbing Design and Application Guide

1 1-800-872-7277 PEX Plumbing Design and Application GuideZurn PEX Tubing and FittingsCertifiedNotice:This manual contains recommended installation instructions for Zurn PEX hotand cold water systems. Failure to observe these installation instructions may result insubstandard performance of the system. Zurn Industries, Inc. expressly disclaims anyresponsibility or liability for substandard performance resulting from failure to complywith installation PEX PLUMBINGD esign and Application GuideSTANDARDS, LISTINGS, APPROVALS, OR ACCEPTANCESPEX Plumbing Systems are covered in the following codes, standards orapprovals:ASTM F876 American Society for Testing and MaterialsASTM F877 ASTM F1807 ANSI/NSF Standard 14 NSF InternationalANSI/NSF Standard 61 NSF InternationalCAN/CSA Standards AssociationIPCI nternational Plumbing CodeIRCI nternational Residential CodeUPCI nternational Association of Plumbing andMechanical OfficialsState and LocalCity, County, and State ResidentialCode AcceptanceContact your local Plumbing officialThe standards and code bodies above may not list all elements comprisingthe Zurn PEX System.

2 Check your local code under cross-linked polyethylene or PEX. MARKINGAll Zurn PEX tube is marked with nominal size, wall thickness, pressurerating, NSF-PW, and the applicable ASTM standards. Zurn PEX tube is for water applications only. Do not use with LP or natural gas. See Figure 1 Zurn PEX Plumbing Design and Application GuideFigure 1 Zurn PEX NSF-pw-Cl-TD ASTM F876/F877 SDR-9 100 PSI at 180 F 3/4" CTS - 7/8" AA-12-21-95-18:36 ManufacturerListing Agency andChlorine RatingASTMS tandardsStandardDimension RatioPressure/TemperatureRatingOD SizeProduction CodeIt is the sole responsibility of the installer to assure that this productmeets local IS ZURN PEX?Zurn PEX: is a flexible pipe for hot and cold water Plumbing applications . is listed by NSF as safe for use with drinking water, meets or exceedsthe requirements of ASTM F877.

3 Is installed using insert and crimp system of fittings, tools, andGo/No-Go gauges. can be used in residential and light commercial hot and cold waterplumbing applications . can be used in hydronic radiant floor applications . may be bent in a radius as small as six (6) times the outside diameterof the Zurn PEX: should not be stored or installed where it will be exposed to direct orindirect ultraviolet light ( sunlight). should not be exposed to direct flame. should not be used in excessive operating conditions inconsistent withpressure ratings that appear on tubing and applicable standards. should not be subjected to prolonged exposure to free chlorine con-centrations greater than 4 ppm. should not be used in contaminated soils. should not be exposed to materials that affect the basic properties ofcross-linked polyethylene, brass, or !

4 Zurn PEX fittings are identified by the letters Q and PEX stampedonto the body of the PEX fittings also have two ribs on theinsert portion of the PEX crimp rings are identified by the letters Q and PEX stamped on the outside of the PEX crimp rings are coloredblack for easy :It is the installer s responsibility to avoid mixing PB andZurn PEX components. Zurn Industries, Inc. does not guarantee orin any way warrant the installation of Zurn PEX systems due to thewide variance in installation of PB and Zurn PEX components may cause Plumbing systemfailure and result in severe water 2 Zurn PEX Plumbing Design and Application GuideCAUTION:Never use any chemicals, pipethread compounds, putty, mineral or linseed oil products. They coulddamage your pipe and THE ZURN PEX SYSTEM WORKSThis insert and crimp-ring system is designed to help a professionalplumber make permanent, tightly sealed, leakproof connections for creation of a well-functioning Zurn PEX pipe hot and cold water distribution system or to repair any existing system.

5 The tools and recommended techniques are explained in this 3 Zurn PEX Plumbing Design and Application GuideFittingsMade of strong brass, the fitting isinserted into the end of the PEX pipe. A tightly sealed connection is formed byproperly crimping a copper ring on process presses the fitting ribsinto the RingAnnealed and ductile with a black finish,this precision-formed copper ring goeson the pipe and must be located over theribs of the inserted fitting. When crimped,it permanently seals the pipe and flat steel Go/No-Go gauge lets youdetermine if a crimped connection wasproperly ToolDesigned for smooth, even cutting, thetool s jaw will fit firmly over the pipe toallow a square, burr-free ToolThe tempered steel tool provides positiveinterlocking jaw action for precision Ring Removal ToolThis compact tool assists in removing thecrimp ring and PEX tubing without damag-ing the fitting.

6 Using the ring removal toolallows a fitting to be safely 4 Zurn PEX Plumbing Design and Application GuideMAKING A CONNECTIONM easure and cut the pipe. Be sure youhave a square burr-free cut. An unevenor jagged cut may cause an , slip a copper crimp ring onto thepipe. Do not use hose clamps!1/8" to 1/4"Crimp RingSpacingFitting Shoulder90 Now insert the fitting into the pipe up tothe fitting shoulder. Position the crimpring 1/8" to 1/4" from the end of the improperly positioned ring may pro-duce a weak the tool so the crimp ring iscompletely covered by the tool the tool at a 90 angle to the fitting and close it 5 Zurn PEX Plumbing Design and Application GuideUSING THE ZURN CHECKING GAUGEA fter making crimp connections, use the appropriate opening of this flat Go/No-Go Gauge to check your finished crimp.

7 The Go openingshould go freely across a crimped ring anywhere on its diameter with thepossible exception the upset area on the ring surface caused by the tooljaws closing. Do not force the gauge across the ring. The No-Go openingshould not go across a crimped ring anywhere. If the crimp fails eithertest, cut out the fitting and and No-Go OpeningsDO sAlways place the gaugeopening on the crimp ringat a 90 angle for an accurate certain you use thegauge opening sized for the diameter of your TsYesNoDon t slide the gauge ontothe connection by sliding it along the tube. Push itdirectly onto the t try to save time byrecrimping a crimp thatdoes not gauge fitting must be cut out and t modify the gaugeopening areas for any reason. They have beencarefully manufactured inch 6 Zurn PEX Plumbing Design and Application GuideINCORRECT CONNECTIONS AND THE CONSEQUENCES#1 Ring crimped over end of the tube.

8 Result:Does not cover enough ribs.#2 Tool was not at 90 to the tube when crimped. Result:Insufficient rib coverage; plastic dented.#3 Ring not completely covered by crimping tool. Result:Ring distortion, non-uniform crimp.#4 Tube not cut squarely. Result:Insufficient rib coverage.#5 Ring too far from pipe end. Result:Insufficient rib every case, the final consequence is improper sealing and leak PERFECT CRIMP CONNECTIONThe PEX tubing must be placed to the fitting shoulder. For fittingswithout a shoulder, the PEX tubing must be placed far enough to coverall the fitting barbs. The crimp ring is placed 1/8" to 1/4" from theshoulder or end of the PEX ShoulderProper pressureand frictionbetween fittingand forced firmlybetween dimples, ears, orleak path gaps.#1#2#3#4#51-800-872-7277 7 Zurn PEX Plumbing Design and Application GuideADJUSTMENT(QCRT2T, QCRT3T, QCRT4T)Zurn crimp tools are factory set to provide proper crimps.

9 This shouldbe checked before use by making a test crimpconnection and checkingit with the crimp gauge. As long as the finished crimp connection gaugesproperly, there is no need to adjust the tool. We recommend checkingeachcrimp connection with the Zurn Go/No-Go the tool wears and the crimps no longer gauge properly, the toolneeds adjusting. Follow these simple the bottom locking setscrew two turns using the hex wrenchsupplied with the tool until the jaws just touch and increased resistance is is the pre-load the top Adjusting Screw until the distance between the raised + marks on the handles is between 7 and 8-1/2 inches. Tighten thebottom locking a test crimp connection and check it with both the Go and No-Go openings of the gauge. If necessary, make additional adjust-ments.

10 If the No-Go opening goes over the crimped ring, the toolis too tight. The distance between the + marks should be the Go opening does not go over the crimped ring, the tool istoo loose and the distance between the + marks should be a light oil to the tool pivot points each time the tool is to lubricate the tool will shorten its " - 8 1/2"WARNING:Increasing the pre-load distancebeyond 9" will make the tool hard to use and shorten tool life because of excessive ScrewLocking Screw1-800-872-7277 8 Zurn PEX Plumbing Design and Application GuideADJUSTMENT(QCRT5T)Zurn crimp tools are factory set to provide proper crimps. This shouldbe checked before use by making a test crimpconnection and checkingit with the crimp gauge. As long as the finished crimp connection gaugesproperly, there is no need to adjust the the tool wears and the crimps no longer gauge properly, the toolneeds adjusting.