Demountable Couplings are essential fittings used for applications where in-line equipment such as UV systems, pumps, filters, and other components need to be removed quickly for cleaning or maintenance.
Each coupling is sized according to the Internal Diameter (ID) of the joining socket unless specified otherwise.
Demountable Coupling Body
Retaining Nut
Socket
Sealing “O” Ring
The design allows rigid pipe to be solvent welded internally on both the coupling body and the socket.
Once installed, align the male (coupling body) and female (retaining nut) threads, tighten them together, and the heavy-duty E.D.P.M sealing washer creates a strong, water-tight seal.
Ideal for systems requiring regular maintenance or cleaning
Quick and easy installation
Provides a durable, leak-free connection
Suitable for ponds, plumbing, filtration, aquatics, and other water systems
For use with rigid pipe; always use a non-toxic solvent weld sealant
All demountable couplings are measured by Internal Diameter (ID) unless explicitly stated otherwise.
The following sizes are measured by Outside Diameter (OD):
60.3mm (OD)
63mm (OD)
Full size list:
43mm (1.5" Waste / 40mm Domestic)
48.3mm (1.5" Grey Pressure)
50mm
56mm (2" Waste / 50mm Domestic)
60.3mm (OD – Grey Pressure)
63mm (OD)
82mm (3" Waste)
110mm (4" Waste)
(Refer to the Demountable Coupling size chart for complete dimensional information.)
Before purchasing, double-check the outside diameter (OD) of your rigid pipework.
Pipe can sometimes be mislabeled, so confirming the OD ensures the correct fit.
Note: Each Demountable Coupling is sized according to the diameter (mm) of the rigid pipe it is designed to work with.
For example: A 50mm Demountable Coupling fits 50mm OD rigid pipe.