AG Publications Aquafax Equipment Catalogue

TECHNICAL

PRODUCT GROUP

www.aquafax.co.uk

MAIN HEADING TECHNICAL DATA

BSP PIPE THREADS SIZE CHART

By measuring the overall diameter of the pipe fitting including the thread as shown, the table below helps to identify the correct BSP thread size of the pipe fitting. Thread Size Threads per Inch Thread Pitch Overall Thread Diameter BSP No. / Inch (mm) (mm) (Inch) 1 ⁄ 16 28 0.907 7.723 0.304 1 ⁄ 8 28 0.907 9.728 0.383 1 ⁄ 4 19 1.337 13.157 0.518 3 ⁄ 8 19 1.337 16.662 0.656 1 ⁄ 2 14 1.814 20.995 0.825 5 ⁄ 8 14 1.814 22.911 0.902 3 ⁄ 4 14 1.814 26.441 1.041 1 11 2.309 33.249 1.309 1 1 ⁄ 4 11 2.309 41.91 1.65 1 1 ⁄ 2 11 2.309 47.803 1.882 2 11 2.309 59.614 2.347 2 1 ⁄ 2 11 2.309 75.184 2.96 3 11 2.309 87.884 3.46 4 11 2.309 113.03 4.45 5 11 2.309 138.43 5.45 6 11 2.309 163.83 6.45 Suggested Thread Sealants: Metal to Metal: Loctite 577 Metal to Plastic: Loctite 5331 Plastic to Plastic: Loctite 5331 Overall Thread Diameter Dia.

DEZINCIFICATION

A major part of our business is dedicated to supplying non-ferrous metals and we take interest and care in the material specification and suitability for our type of business. We are able to call on the support, and expertise of the manufacturers we represent or federations to help answer any additional queries you may have.

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BRONZE CC491K

BRASS CW617N, CC753S & CC754S

Brass alloy material is commonly used to manufacture a wide range of fittings and is a relatively strong low-cost material. Brass should only be used in fuel and freshwater applications and should not be fitted to convey contaminated wastewater, brackish or seawater. Brass fittings used in an aggressive electrolytic environment may suffer dezincification potentially causing the fitting to crack and fail.

There are various types of bronze material used in manufacturing. Our bronze plumbing products have a high resistance to salt water and can be used above and below the waterline. These can be used to convey wastewater, brackish or salt water.

Alloy: CC491K CuSn5Zn5Pb5

Dezincification resistant (CR) brass has a much higher resistance to seawater corrosion than standard brass and is commonly referred to as DZR brass. These fittings can be identified by the CR stamped or cast onto the fitting, valve or strainer. DZR brass can be used above or below the waterline and can be used to convey wastewater, brackish or seawater. DZR DEZINCIFICATION RESISTANT (CR) BRASS CW602N & CB770S

Alloy: CC753S CuZn37Pb2Ni1AlFe Cast Products CC754S CuZn39Pb1Al Cast Products CW617N CuZn40Pb2 Hot Stamped & Turned Products CM612N CuZn40Pb2 Turned Products

Note: It is good practice to use the same metal material where parts are connected that are in contact with or conveying a highly conductive electrolyte such a seawater. The installer may also consider bonding the below waterline plumbing installation to a sacrificial anode to protect against galvanic corrosion. Where possible, use the same parts as originally fitted by the boat builder.

Alloy: CB770S CuZn36Pb-C Cast Products CW602N CuZn36Pb2/As Hot Stamped & Turned Products

For expert advice, contact our dedicated sales team Tel: 01582 568700 Email:techteam@aquafax.co.uk