Graco 308550ZAC important safety instructions Flange Connections, Bolt Tightening Sequence

Installation

Flange Connections

The fluid inlet and outlet ports are 2” raised face, standard 150 lb class pipe flanges. Connect 2” flanged plastic pipe to the pump as follows. You will need:

DTorque wrench

DAdjustable wrench

D6” diameter, 1/8” thick PTFE gasket, with four 0.75” diameter holes on a 4.75” diameter bolt circle, and a 2.20” diameter center

1.Place a flat washer (E) on each bolt (C). Refer to Fig. 3.

2.Align the holes in the gasket (B) and the pipe flange (A) with the holes in the pump outlet flange (S).

3.Lubricate the threads of the four bolts. Install the bolts through the holes and secure with the wash- ers (E), lockwashers (D), and nuts (F).

DFour 5/8” x 3” bolts

DFour 5/8” spring lockwashers

DEight 5/8” flat washers

DFour 5/8” nuts.

4.Hold the nuts with a wrench. Refer to the tighten- ing sequence in Fig. 3 and torque the bolts to 20–30 ft-lb (27–41 NSm). Do not over-torque.

5.Repeat for the pump inlet flange (R).

BOLT TIGHTENING SEQUENCE 1

3 1

F

D

E

S 2 4

B

04405

A

E

C 1

R

KEY FOR FIG. 3

AFlanged plastic pipe

BPTFE gasket

CBolt

DLockwasher

EFlat washer

FNut

R2” fluid inlet flange

S2” fluid outlet flange

1

Lubricate threads. Torque to 20–30 ft-lb

(27–41 NSm). Do not over-torque.

Fig. 3

04615B

308550 9