Type Hose Inside Diameter Connecting Thread Ordering No. mm in Hose Nipple 20 3/4 - 9000 0312 00 25 1 - 9000 0313 00 Hose Nipple Lock Nut 20 3/4 - 9000 0263 00 25 1 - 9000 0264 00 External Thread - - G3/4A 9000 0302 00 - - G1A 9000 0303 00 Internal thread - - G3/4 9000 0306 00 - - G1 9000 0307 00 Packing 20 3/4 - 9000 0000 00 25 1 - 9000 0000 00 Locking Spring 25 per pack 3176 8640 00 Cover 9000 0314 00