Specification

Working Pressure and Temperature
Range for Acetal Fittings (PI, SI, SM
Also suitable for vacuum
General Technical Specifications:
For Polypropylene Working Pressure and Temperature
Range, refer to the Fluid Systems portion of catalog.
Tube Types
Plastic Tube - Polyethylene, nylon and polyurethane
conforming to the tolerances shown below. For soft
tubing or thin wall tube we recommend the use of tube
inserts.
Braided Tube - Use of Tube to Hose Stems listed on
page 14 is essential when using braided tube or hose.
The use of clamps to retain braided tube on barbs is
recommended.
Metal Tube (soft) - Brass, copper or mild steel
conforming to the tolerances below.
Metal Tube (hard) - We do not recommend John Guest
fittings for hard metal or chrome plated tubes.
For stainless steel and other polished metal tubes we
recommend the use of Superseal fittings. These are
shown on page 30-31 of this catalog.
It is essential that outside diameters be free from score
marks and that the tube be deburred before inserting
the fitting.
Tube Tolerances
John Guest Fluid System fittings are offered for tubes
with outside diameters to the following tolerances.
Size (inches) 5/32 - 3/16 1/4 - 1/2
Tolerance
(inches)
+0.001 /
-0.003
+0.001 /
-0.004
Size (mm) 4mm - 5mm 6mm - 22mm
Tolerance
(mm)
+0.05 / -0.07 +0.05 / -0.10
Installation and System Testing
Fittings and tube should be kept clean and
undamaged before use.
All tube and fittings installations must be pressure
tested after installation to ensure system integrity
before handing over to the final user. Refer to "How to
make a Push-Fit connection".
Chemicals
For use with chemicals or other potentially aggressive
liquids, please contact our Technical Support
Department. John Guest fittings are not recommended
for use with explosive gases, petroleum spirits, or other
fuels.
Collet Covers
Are available as additional security against removal of
the tube or to provide a simple means of color coding.
The cover is offered in a range of six colors. Please see
page 46 of this catalog.
Food Quality
All of the fittings in this catalog are produced in Food
and Drug Administration (FDA) approved materials
and are therefore recommended for food quality
applications.
The wetted surfaces of John Guest PI, PM, SI, SM, CI,
CM and NC plastic fittings, PPSV and ASV Valves, and
PE Tubing are in compliance with FDA requirements
for direct contact with food as detailed in 21CFR part
177.2470 for the body and 177.2600 for the O-ring.
NSF International Standard 51 and 61.
Maximum Torque Values for Plastic
Threads BSP, BSPT & NPT.
Do not overtighten plastic threaded fittings as
this could cause undue stress and eventual failure.
Maximum recommended torque figures are shown
below.
Threads
1/8" - 1/4" 3/8" - 1/2" 3/4"
Maximum
Torque
1.0ft lbs 2ft lbs 3ft lbs
1.5Nm 3.0Nm 4.0Nm
John Guest recommends that OEM customers consider
replacing threaded ports with the more modern
Cartridge Systems.
It is recommended that all installations are checked
prior to use to determine that a seal has been made.
The maximum torque figures quoted for use with
Speedfit fittings are dependent on the mating thread
conforming to the relevent U.S., British or International
thread standard.
Maintenance and Replacement Intervals
John Guest products generally require little maintenance
but as a minimum we recommend routine visual
inspection. Frequency of visual inspection will depend
on severity of application and risk of failure. If after
visual inspection John Guest products appear damaged,
cracked, charred, discolored, heat distorted or corroded,
they should be replaced. Any product that is or appears
to be leaking should be replaced.
Product life is affected by the severity of the
application, the hostility of the working environment
and contact with aggressive chemicals or liquids. It is
therefore important that specific replacement intervals
be considered by specifiers/users/customers based
on previous service life or when failure could result in
unacceptable downtime, damage or injury risk.
Cleaners and Sanitizing of Fittings
The external surfaces of John Guest products must
not come into contact with oxidizing or acidic cleaners
and sanitizing agents, for example (but not limited to)
those below pH 4, high in sodium hypochlorite level
(bleach) or containing hydrogen peroxide. Our plastic
material suppliers recommend ECOLAB Oasis 133 as a
suitable cleaner for the external surfaces of products
manufactured by John Guest. Several different
methods exist for sanitizing the internal surfaces of
fluid systems, including sodium hypochlorite, hydrogen
peroxide, chlorine dioxide or ozone. It is entirely the
responsibility of the end user to determine if the
chosen method is suitable for use with John Guest
products over the planned working life of the system.
However, to avoid unnecessary early failure, John
Guest requires that the disinfection solution must be
immediately flushed out at all draw off points with
fresh, wholesome water at the end of the disinfection
period. The solution must not be left in the system.
Disinfection solutions must only come into contact
with the internal (fluid carrying) surfaces of the system.
If any other surfaces of a fitting come into contact with
disinfection solution the whole fitting must be replaced
immediately. Polypropylene fittings offer greater
resistance to aggressive chemicals but does not have
the same mechanical properties as other materials.
John Guest polypropylene fittings are generally
designated by the part number prefix PP or PPM.
Our material suppliers recommend ECOLAB Oasis 133 as
a suitable external cleaner for products manufactured
by John Guest.
Responsibility of Use
While we give a warranty against defects in
manufacture or materials, it is the responsibility of
the user/installer to ensure that fittings and related
products are suitable for their application. The
installation must be carried out correctly in accordance
with our recommendations, complying with recognized
codes of practice and relevant national standards, and
be properly maintained. Please refer to our terms and
conditions of sale.
Side Load
Fittings should not be subject to excessive side loads
and they should not be used as support brackets.
Tubing and fittings should be adequately supported to
prevent excessive side loading.
Product Selection and Installation
John Guest fittings and related products are specifically
designed and manufactured by John Guest to the
Technical Specifications set out in the John Guest
Product Catalog. All John Guest fittings and related
products should be selected, installed, used and
maintained in accordance with these Technical
Specifications. It is the customer’s/user’s responsibility
to ensure that John Guest fittings and related products
are suitable for their intended applications, and are
properly installed and maintained and are used in
accordance with the Technical Specifications. It is
also the customer’s/user’s responsibility to provide
its customers with any relevant technical information
about John Guest products it supplies them.
The company has a policy of continuous research and
development and reserves the right to amend without
notice the specification and design of all products
illustrated in this catalog. John Guest reserves the right
to change the color and shape of products. Photographs
are for illustration purposes only.
Subject to our Terms and Conditions of Sale shown on
page 83.
John Guest USA, Inc. is not responsible for misprints or
typographical errors.
Fluid System Technical Specications for Products Listed on Pages 12-59.
Fittings and pipe should be kept clean and undamaged
before use.
Sizes
3/8" to 1" CTS.
Pipes
Click-to-Lock products can be used with: PEX, Copper and CPVC Pipes
conforming to ASTM Standards. Click-to-Lock products cannot be used on
stainless steel pipe.
Standards
Click-to-Lock products are designed and manufactured under a fully
integrated system assessed by B.S.I. to BS EN ISO9001. Click-to-Lock
products are also NSF-61, IAPMO and ICC listed.
Do not use for gas, fuel oil or compressed air applications.
Working pressures and temperatures:
Burst Pressure (ttings)
Click-to-Lock product used with copper, CPVC or PEX pipe will withstand
pressures well in excess of normal service conditions.
Insulation
Comply with code requirements.
Minimum bend radius with clips (PEX)
Clip Spacing (In Inches): For surface mounted pipes.
Expansion (PEX Pipe)
1% on length between 68°F and 180°F.
Flow rates
Comparable with metal systems.
Cleaners, inhibitors and descalents
For advice on the use of additives such as corrosion inhibitors, the additive
manufacturers should be consulted.
Paint and Chemicals
Only use water or oil-based paint. DO NOT ALLOW CONTACT WITH
jointing compounds, cellulose-based paints, paint thinners, paint strippers,
solder flux, acid-based descalents or aggressive cleaning products.
Solder Flux
No fluxes of any type should come into contact with Click-to-Lock products.
Extreme care should be taken to ensure that no such contact takes place.
Chlorine
Click-to-Lock products are suitable for use with water supplies containing up
to 4ppm of chlorine.
Pipe clips
Pipe clips should not be fitted any closer than 2.5 inches from the end of the
fitting. Pipe should be adequately supported by pipe clips to prevent undue
stress (side load) on fittings.
Pipe inserts: Plumbing
John Guest recommends the use of pipe inserts for PEX pipe connections
with Click-to-Lock product in Standard Residential Plumbing (hot and cold
water) installations.
Pipe inserts: Heating
John Guest requires the use of pipe inserts for PEX pipe connections with
Click-to-Lock products in all heating installations.
Connection to boilers
A minimum 36 inches run of copper pipe must be installed between the boiler
and the Click-to-Lock product system.
Connection to Hot Water Heater
A minimum 18 inches run of copper pipe must be installed between the hot
water heater and
the Click-to-Lock product system.
Connection to copper pipe
18 inches is the minimum distance to make a solder connection on copper pipe
inserted into a Click-to-Lock product. Ensure that no solder flux comes into
contact with the fitting.
Concrete and masonry
Pipe and fittings can be laid in concrete and masonry providing they are installed
in conduit pipe with access boxes for the fittings. This is to enable the pipe to
expand and provide accessibility for both pipe and fittings. Fittings and pipe
should be removable for possible replacement. Insulation is also recommended
to protect against heat loss and the eects of frost. Fittings not to be vused
underground.
Electrical continuity
If Click-to-Lock products are used in an existing metal system, electrical
continuity must be reinstated.
System testing
To ensure the pipework and fittings have been installed correctly, whether it
be on a new or extended system, it is essential that the system be checked and
hydraulically wet tested. Testing should be at 30 psi for 10 minutes and 150 psi
for 10 minutes. This testing, combined with other relevant checks, should reveal
installation problems and is regarded as good plumbing practice. However,
system testing should not be regarded as a substitute for correct installation
(see also "How to make a Click-to-Lock connection").
Disinfection of Hot and Cold Water Systems
Click-to-Lock products can be disinfected after installation or as part of a routine
maintenance program. The disinfection procedure must comply with code
requirements. Only disinfection solutions specifically recommended as suitable
for contact with plastic plumbing systems and, where necessary, employing
specialist contractors may be used with Click-to-Lock products. Disinfection
solutions must only come into contact with the internal (wet) surfaces of the
system. If any normal dry surfaces of a Click-to-Lock product come into contact
with disinfection solution, the whole fitting must be replaced immediately. The
disinfection solution must be immediately flushed out at all draw out points
with fresh, clean water at the end of the disinfection period. The solution must
not be left in the system.
System ushing
As is usual practice for any plumbing installation, flushing of the system prior to
the use of Click-to-Lock products is recommended to remove any contaminants/
chemical residue from elsewhere in the system.
Vermin
Click-to-Lock products will need protection in vermin-infested areas.
Tube insertion depths
Side Loads
Fittings should not be subject to excessive side loads and they should not
be used as support brackets. Tubing should be adequately supported to
prevent excessive side loading.
Maximum torque values of threads: in Ft lbs
It is recommended that all installations are checked prior to use to determine
that a seal has been made.
John Guest USA, Inc. is not responsible for misprints or typographical errors.
Application Max. Pressure Max. Temperature
Water 160 psi 73° F
Water 100 psi 180° F
Water 80 psi 200° F
Pipe Diameter 3/8" CTS 1/2" CTS 3/4" CTS 1" CTS
Min Radius 4" 5" 7" 10"
Click-to-Lock
TM
(PSEI and MWI Range) for Products Listed on Pages 62-65.
Technical Specifications
and PM Range).
Clip Spacing
Pipe Diameter Horizontal Run Vertical Run
3/8" CTS 12" 20"
1/2" CTS 16" 20"
3/4" CTS 20" 30"
1" CTS 30" 36"
3/8" CTS 1/2" CTS 3/4" CTS 1" CTS
PSEI
1
1
/8
"
1
3
/8
"
1
1
/2
"
1
1
/2
"
MWI
1
1
/8
"
1
1
/8
"
1
1
/2
"
1
1
/2
"
1/2" NPT 3/4" NPT 1" NPT
Plastic 2 3 3
Metal 3 4 4
Air -4F 230psi 150psi
Potable
Liquids
and Air
+33F
F
F
230psi
230psi
150psi
150psi
150psi
100psi
Size Size
5/32" - 5/16"
4mm - 8mm
3/8" x 1/2"
10mm - 22mm
Temp. Pressure
78 79
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