[. . . ] [. . . ] Install gland and collar onto vacuum relief valve assembly. Collar threads left-handed. The plastic plug is not used. Screw the adaptor (as assembled) into the PG7600TM vacuum port. Torque to 15 Nm (Newton meter). PG7600 is a trademark, registered and otherwise, of DH Instruments, Inc. Document 560002a 060303 DH Instruments, Inc. 4765 East Beautiful Lane Phoenix AZ 85044-5318 USA Tel 602. 431. 9100 Fax 602. 431. 9559 dhi@dhinstruments. com www. dhinstruments. com [. . . ] [. . . ]