National Grooved piping system is reliable and is faster to install than welding, threading or flanging, resulting in lowest installed cost. It can be adopted to suit standard pipe with cut grooves or standard and light wall pipe with rolled grooves. Couplings perform equally well under pressure and vacuum. Couplings are available for flexible and rigid system. Grooved end fitting are machined to AWWA C606 cut groove standard Products are offered with RAL 3000 alkyl enamel rust preventive paint as standard and hot dipped galvanised coating is available optionally.
Rigid Coupling Style 5
Flexible Coupling Style 11
Flexible Coupling Style 11L
Flexible Coupling Style 12
Shouldered Piping System - Style 30
Mechanical Branchlets Style 15 Grooved & Style 16 Threaded
Mechanical Branchlets Style 15 Grooved & Style 16 Threaded
Mechanical Branchlets Style 13
Concentric Reducer Style 140
Standard Grooved Fittings Styles 105, 106, 107, 135 & 155
Reducing Tee - Short Pattern Style 120
End of Line Fitting - Style 112
Bullhead Tee - Standard Style 111
Flange Adapters Style 190
Nipples (Steel) Style 35
Hose Nipple Style 80
Eccentric Reducer Style 145
Grooved End Butterfly Valve - Style 50
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Rigid Coupling Style 5
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Flexible Coupling Style 11
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Flexible Coupling Style 11L
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Flexible Coupling Style 12
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Shouldered Piping System - Style 30
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Mechanical Branchlets Style 15 Grooved & Style 16 Threaded
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Mechanical Branchlets Style 15 Grooved & Style 16 Threaded
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Mechanical Branchlets Style 13
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Concentric Reducer Style 140
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Standard Grooved Fittings Styles 105, 106, 107, 135 & 155
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Reducing Tee - Short Pattern Style 120
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End of Line Fitting - Style 112
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Bullhead Tee - Standard Style 111
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Flange Adapters Style 190
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Nipples (Steel) Style 35
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Hose Nipple Style 80
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Eccentric Reducer Style 145
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Grooved End Butterfly Valve - Style 50
