Specifications & Installation Instructions
TAPPING BANDS AND NUTS
Material: Low Lead Gunmetal (LLLG2)
BS1400:1986-BS EN1982:1999.
AS2738-2000. Alloy C83600A.
Chemical Composition % (Nominal):
Copper 84-86 %
Tin 4-6 %
Zinc 4-6 %
Lead 4.5 % Max
Meet the following Standards:
• AS/NZ 2345 - 2006 Dezincification Resistant
• AS/NZ 4020 - 2005 Potable Water Contact
• AS2738 - 2000 Alloy Standard C83600A (Low Lead Gunmetal)
LIP SEALS AND 'O' RINGS
Material: Nitrile Rubber
Meet the following Standards:
• AS1646.1 - 2000 Elastomeric Seals for waterworks purposes
• AS/NZ 4020 - 2005 Potable Water Contact
Service Conditions:
Maximum Pressure Rating of 2068 KPa (300PSI)
Maximum Water Temperature of 50° C
Quality:
Giltech Tapping Bands are manufactured to the strictest quality
standards in our ISO9001:2000 (LIC 108) accredited foundry.
The Tapping Band's ample width and pre-formed radius provides
greater distribution of clamping pressure to avoid crushing the
pipe.
Giltech Tapping Bands have the approval of most Local Authorities;
the main one being MANARC (Manakau City Council Approval
MW7).
Advantages:
• Corrosion Resistant
• Resistant to seawater
• Dezincification Resistant
• Weather resistant
• Resistant to other materials which attack traditional
materials
• Excellent fatigue resistance
• Resistant to vibration pump loads and water hammer
• Resistant to damage in transport and storage
• Giltech Tapping Bands are widely used in New Zealand and are
exported to Australia, the Middle East, and the Pacific
Islands.
• They are suitable for water reticulation and irrigation where
their strength helps avoid damage by farm implements, live stock
etc.
Installation Instructions:
• Make sure the pipe is clean and free from dirt or other
contaminants and has no grooves or other irregularities such as
weld beads or indentations on it.
• Fit the Tapping Band around the pipe and hand tighten the 2
nuts.
• Tighten the nuts to approximately 20 Newton metres or 15 foot
pounds.
• This can be achieved by giving the nuts a firm turn with a
200/250mm adjustable spanner or equivalent.
• Note: When properly tightened there will still be a gap between
the top and bottom band. This gap allows for the manufacturing
tolerances of the outside diameter of the pipe.
• DO NOT OVER TIGHTEN the nuts.
• DO NOT use tools such as rattle guns as over tightening the nuts
could damage the tapping band.
• If after tightening a leak is evident - check the pipe and seal
to find the cause.
• Continuing to tighten the band WILL NOT fix the problem.