SERIES 40 UNION FLANGE

An economical, practical and reliable alternative to welded and screwed systems, Clow canada's Union Flange joins plain-ended pipe to flange-ended equipment, fittings and valves (not recommended for PVC pipe; better alternative is Clow Canada's Series 90 Adapter Flange). On-site installation is simple: a wrench is the only tool required. The Union Flange is a unique solution to the problems which can occur in the use of pro-fabricated flanged piping, such as downtime, reliance on off-site suppliers and inaccurate dimensions. The design of the Union Flange comprises three elements: the flange, the gasket and the restraint. The flange is manufactured from ductile iron, which is stronger than the usual grey iron threaded flange, to avoid breakage upon impact or from overtightening of bolts. The gasket used is the standard mechanical joint gasket, proven reliable in over 40 years of service. A set screw locking device provides the restraint. This device resembles those used in mechanical joint retainer glands, hundreds of thousands of which are in use worldwide, replacing concrete thrust blocks and other restraining devices.

Clow Canada's Union Flange has been successful in numerous municipal and industrial applications such as fire protection, water and wastewater, and process piping systems.

Advantages of Clow's Union Flange

	Easy to Install	no skilled labour or special equipment required
	Efficient	no problems with bolt-hole alignment; no additional restraining connections needed
	Versatile	can be used under or above ground; usable with abrasive materials; can handle wide temperature range
	Durable	all materials corrosion resistant; ductile iron used for flange, for added toughness
	Reliable	based on proven design principles; extensively field tested; manufactured under strict quality controls
	Economical	prevents delays during assembly; plain-end pipe less costly than threaded or flanged; no tie-rods required
	Design Superiority	exceeds capabilities of threaded and weld flanges and flanged coupling adapters.

Click here for technical specifications of Series 40 Union Flange.