HOLMAN PVC-U Pressure Fittings systems Installation Guide
- June 3, 2024
- Holman
Table of Contents
Pressure Pipe and Fittings Systems
Installation Guide
PVC-U Pressure Fittings systems
Holman Industries PVC-U Pressure Fittings systems are intended for use above
and below ground, our products are manufactured to AS/NZS 1477:2017 PVC pipes
and fittings for pressure applications. Holman Fittings are certified
products, holding ISO Type 5 and WaterMark certifications, providing assurance
that the products have been independently assessed and recognised as quality
products.
Note: Requirements for installation and use of pipe and fittings
manufactured to AS/NZS 1477:2017 are set out in AS/NZS 2032 and AS/NZS 2566.1
as applicable.
Quality
All Holman products are certified by ApprovalMark International, an accredited
Certification Body by JAS-ANZ, who provides certification to all Holman
Plumbing products in accordance with Watermark certification. This provides
assurance and confidence that Holman only supplies products which comply to
the relevant Australian and New Zealand Standards and are manufactured to the
highest quality. Fabfit t/a Holman Industries is a quality endorsed company to
ISO 9001:2015 Certification and conducts independent batch release testing to
maintain the highest level of compliance.
Product Range of Moulded and Fabricated fittings certification under the
WaterMark certification system:
- AS/NZS 1260 PVC-U Pipes and Fittings for Drain, Waste and Vent applications
- AS/NZS 1477 – PVC-U Pressure Pipes and Fittings for Pressure applications
- WMTS-006 Reflux Valves Sewerage
- WMTS-030 Solenoid Valves
Product applications
PVC-U Pressure pipes and fittings have been in use for pressure applications in Australia since the 1960s supported by a much longer service history elsewhere in the world. Over this time, the industry has recognised the many benefits of PVC for pressure pipes and fittings.
- material stability
- corrosion resistance
- high strength to weight ratio
- ease of handling and installation
- excellent flow characteristics
| SWJ Pressure Fittings | RRJ Pressure Fittings |
|---|---|
| Pumped sewerage and effluent pipelines | Water supply services |
| Potable water | Above ground water supply |
| Irrigation and turf watering | Below ground drainage and sewer |
| Slurry transport | Watermains |
| Pressure sewerage | Irrigation |
| Water supply | |
| Recycled water |
Handling and Storage
While PVC-U pipes and fittings are light and easy to handle, careless handling
may result in unnecessary damage. Pipes and fittings should not be dropped or
thrown onto hard surfaces or allowed to come into contact with sharp objects
that could inflict deep scratches.
Bowing or distortion
- Pipes and fittings can distort under high applied loads due. This may be caused by not being properly supported or stacking incorrectly. This can be aggravated at high ambient temperature and long-term storage.
- Heat sources should be avoided to reduce the risk of distortion.
- If pipes are stored outdoors for more than 12 months, they should be protected by for example, hessian or white shade cloth in a manner that allows ventilation and avoids heat build-up. Fittings are to be stored indoors only, up to the installation stage.
Jointing Methods
PVC-U pipelines are designed to be easily assembled. While rubber ring jointed
(RRJ) pipe systems can be fully assembled above the trench, care must be taken
to ensure joints do not pull apart during lowering into the trench. All joints
must be subsequentially be inspected. Solvent Weld Joint (SWJ) pipe systems
may be jointed above the trench but not lowered into the trench until the
solvent has completed its initial set stage.
1.1 Solvent Weld joint
Only Solvent Cement and Priming Fluids that are manufactured to AS/NZS 3879
“Solvent Cements and Priming Fluids for PVC (PVCU and PVC-M) and ABS pipe and
fittings” are recommended.
To achieve a strong and leak free joint Installers shall:
- Select the correct solvent cement for the intended application/s
- Select the correct pipe for the application and the correct fitting/s using the relevant Holman Product Catalogue
- Follow jointing steps 1 to 8 carefully in jointing instructions. Shortcuts will result in poor joints that are likely to leak or cause system failures.
Solvent Weld Jointing Instructions Step 1 to 8
Do not work with hot pipes and fittings or on hot windy days without
providing adequate protection to the pipes and fittings from the wind. When
not in use always keep lid on solvent cement to minimise evaporation. DO NOT
use solvent if over 12 months old.
Step 1 - Cut spigot square and deburr
Cut the spigot as square as possible using a mitre box and hacksaw or power
saw where applicable. Remove all swarf and burrs from both inside and outside
edges with a sharp knife, file, or using sandpaper. Swarf and burrs which are
left behind will wipe or remove the solvent cement and prevent proper joining.
Also, swarf left behind may dislodge and jam taps and valves.
Step 2 - Check alignment
Check and ensure the pipe and spigot or fittings are properly aligned.
Adjustments or alterations must be made prior to applying the solvent cement
so the joint is not compromised at the welding stage.
Step 3 - Mark Clearly
Mark the spigot by using a pencil or marker only, at a distance equivalent to
the internal depth of the socket. Do not score or damage the surface of the
pipe or fitting.
Step 4 - Clean and soften the surface*
Thoroughly clean the inside of the socket and area between the pencil
(witness) mark and the spigot end with a clean, lint free cotton cloth dipped
in priming fluid (defer from using any synthetic material). This removes dirt
and grease and will soften the PVC surface. Attention: Do not brush or pour
the priming fluid onto the jointing surface. Holman Industries recommends
the use of protective gloves. If contact with skin occurs, wash affected area
with soap and water immediately.
Step 5 - Coat socket first then spigot
Apply a thin and uniform coat of solvent cement onto the internal surface of
the socket. Ensure that solvent build up does not occur in the root area of
the socket. A pool of solvent cement in the root area of the socket will
severely weaken the pipe or fitting. Next apply a uniform coat of solvent
cement to the external surface of the spigot up to the pencil mark (witness)
mark.
Step 6 - Assemble and hold for 30 seconds
Quickly assemble the joint before the solvent cement starts to set, by pushing
the spigot squarely and firmly as far as the pencil (witness) mark, ending
with a quarter turn to ensure the cements spreads evenly in the joint. Hold
the joint in position for a minimum of thirty (30) seconds without any
movement.
Step 7 - The welding stage
Wipe of any excess solvent cement from outside of the joint and where
possible, from the inside of the joint. Do not disturb the joint for at least
a further five (5) minutes, movement may break the initial welding bond.
Step 8 - Curing and testing
The “cure time” ensures the joint will achieve sufficient strength to allow
for testing by internal pressure or vacuum. The minimum cure time for solvent
weld joints in pipes and fittings is twenty-four (24 hours)
1.2 Elastomeric seals
Rubber Ring Joint (RRJ) fittings are supplied with rubber rings for ease of
jointing, these rubber rings fit easily into the ring groove of the socket.
It is necessary to cut pipes on site using a fine-toothed handsaw. A mitre box
is recommended to ensure the cut is square to the pipe axis and all burs must
be removed with a file. The cut position should be measured allowing for
adequate penetration “depth” of the spigot onto the socket. Measure socket
depth at every joint as pipe manufacturers run different socket designs and
therefore different witness marks related to their socket design. A witness
mark and chamfer depth, which is similar to the pipe manufacturer design is
essential before attempting to join the pipes and fittings.
Rubber Ring Jointing Instructions - Step 1 to 4
Step 1 - Clean jointing surface
Remove all dust and dirt from the pipe or fitting spigot and socket.
Step 2 - Ring and Groove
Check the Rubber Ring is correctly seated into the ring groove. Where possible
remove the rubber ring to clean the ring groove ensuring there are no
contaminants prior to re-seating the rubber ring into the ring groove.
Step 3 - Apply lubricant
Apply lubricant to the spigot, fully covering the circumference up to the
witness mark. Ensure the lubricant is applied evenly to also cover the
chamfered section. This will help in the initial jointing stage.
Step 4 - Insert pipe or fitting
Ensuring the pipe or fitting is aligned, introduce the spigot into the socket
up to the witness mark, witness mark must be still visible to ensure the joint
can adjust to thermal expansion and contraction. Jointing may be assisted with
the use of a crowbar of a wooden block. Extra care must be taken to ensure the
socket of the joint being made is restrained to prevent any backwards movement
which may affect the previous joints made in the stack.
Melbourne
**145 Northcorp Blvd, Broadmeadows VIC 3047
PO Box 627, Pascoe Vale VIC 3044
+61 3 8335 4444
[email protected]|
Brisbane
** 1-2/68 Lisgar St, Virginia QLD 4014
P.O. Box 749, Virginia BC QLD 4014
+61 7 3216 5200
[email protected]
---|---
Sydney
** 2/98 Kurrajong Ave, Mount Druitt NSW 2770
P.O. Box 1538, Osborne Park WA 6916
+61 2 9832 3298
[email protected]|
Plumbing Manufacturing
**298A Stapylton Jacobs Well Rd, Stapylton QLD 4207
+61 7 3807 1922
BOOKLEAF PTY LTD as Trustee for the Eden Unit Trust Trading as HOLMAN INDUSTRIES A.B.N 29 385 212 665 A.C.N. 009 036 202
Holman Industries Head Office
11 Walters Drive, Osborne Park WA 6017
PO Box 1538, Osborne Park DC WA 6916
+61 8 9416 9999
[email protected]
www.holmanindustries.com.au