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Pipework & Fittings 

All pipework and fittings supplied by TMC are selected for their non-toxic properties and are therefore suitable for use with potable water (water suitable for human consumption).  They have been utilised for aquatics and aquaculture installations worldwide and are suitable for use in both fresh and saltwater aquatic systems.

Pipework Technical Facts

Plumbing Tips 

Jointing rigid pipework and fittings is easy provided the following steps are followed:


1.   Cut pipe square. Remove internal burrs. 
2.  Chamfer the outer edge of the pipe. 
3.   Roughen the joint surfaces with emery cloth. 
4.   Degrease the joint surfaces with a suitable pipe cleaner. 
5.   Using the correct size of brush, apply an even layer of cement to the pipe and fitting. On larger sizes, apply a second coat to both surfaces. 
6.   Working quickly, push the pipe into the fitting to the stop. Hold for a few seconds before wiping off excess cement. Note that for sizes above 3", two people are needed.


1.   Use damaged pipe. 
2.   Be careless cutting pipe - cut it square! 
3.   Thin solvent cement with cleaning fluid. 
4.  Leave the lid off cement when in use. 
5.   Use a rag to apply cement - use correct brush! 
6.   Smoke while working - ensure good ventilation! 
7.   Put any load on the joint until it is cured.

Solvent Weld Connections 

Use a quality grade of pipe cleaner/primer and solvent cement formulated for the type of connection, with the correct size applicator. Read and follow all the solvent cement manufacturer's application and cure time instructions thoroughly. Before applying cleaner and cement, appropriate safety precautions should be taken. To avoid compatibility problems when connecting rigid pipework of differing polymers i.e. ABS to PVC, we recommend that you only use our Wet ‘R Dry Cement which is suitable for use with both materials. 

How Much Solvent Cement? 

Estimate the number of joints per size, then use this table to calculate how much solvent cement to order.

Please specify if metric conversions are required – these will be supplied with your filtration system. The table below can be used to correctly identify the equivalent metric fittings required. It includes the inch names for pipe products (called NPS or "nominal pipe size") and the corresponding metric equivalents (called DN or "diameter nominal").

Pipework Support 

As working temperature increases, the distance between supports is reduced. Above 60°C continuous support is required.