VERDER VERDERAIR VA 25 Instructions-Parts List Manual page 7

Installation
Flange Connections
The fluid inlet and outlet ports are 1 in. raised face flanges.
Connect 1 in. flanged plastic pipe to the pump as follows. You
will need:
D Torque wrench
D Adjustable wrench
D a 4.25 in. diameter, 1/8 in. thick PTFE gasket, with four
0.62 diameter holes and a 1.15 in. diameter center
D four 1/2 in. x 2.5 in. bolts
D four 1/2 in. spring lockwashers
Fig. 3
D eight 1/2 in. flat washers
D four 1/2 in. nuts.
1.
2.
3.
4.
F
E
S
B
R
04404B
Place a lockwasher and a flat washer on each bolt. Refer
to Fig. 3.
Align the holes in the gasket and the pipe flange with the
holes in the pump flange.
Lubricate the threads of the four bolts. Install the bolts
through the holes and secure with the washers and nuts.
Hold the nuts with a wrench. Refer to the tightening se-
quence in Fig. 3 and torque the bolts to 14–20 NSm.
Do not over-torque.
BOLT TIGHTENING SEQUENCE
A
E
D
C
1
Torque to 14 to 20 N-m. Do not over-torque.
1
3 1
2 4
04405
KEY
A Flanged plastic pipe
B PTFE gasket
C Bolt
D Lockwasher
1
E Flat washer
F Nut
R 1 in. fluid inlet flange
S 1 in. fluid outlet flange
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