How to specify

Suggested Specification:

LASCO Swing Joints (specify type - Unitized, Factory-Assembled, Assembly Kit; diameter  -  1", 1¼", 1½" ,  inlet and outlet styles, lays lengths - as applicable

LASCO Swing Joints shall be molded of rigid polyvinyl chloride (PVC). Type 1, Cell classification 12454-B per ASTM specification D 1784, with NPT threads and pipe sockets per ASTM D 2464 and D2466, respectively. Each rotating joint shall be sealed with a EPDM rubber 0-ring, installed pre-compressed in a sealing groove free of parting lines to prevent leakage. Modified stub ACME threads shall have special engineered (S.E.) diameters and clearances to allow full circle (360º) movement and to reduce stress concentrations and joint fracture at thread roots.

(Note: All LASCO Swing Joints are pressure rated at 315 psi. Gray color on some swing joints does not necessarily indicated Schedule 80 pressure rating. Be sure the units you specify and use bear a 315 psi. rating)

Installation Notes:	1) ACME O-Ring sealed threads should be Finger Tightened and "Backed Off" one full rotation to provide maximum flexibility.
	2) The swing joint arm should be installed at any angle between 30° and 45° of the lateral pipe in order to absorb downward impact.

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Last modified: December 06, 2007