Page 8 of 8
PD20X-XXX-XXX-B (en)
PN 97999-1108
A
C
D
R
B
D
B
H
J
L
F
E
P
G
L
Q
M
K
N (
Bolt circle)
Air Inlet
3/4 - 14 N.P.T.F. - 1
Exhaust port 1-1/2 - 11-1/2 N.P.T.
S
(Material inlet)
(PX20X-FXX-XXX-B)
Material inlet
(PX20X-AXX-XXX-B)
T
(PX20X-BXX-XXX-B)
U
Material outlet
(PX20X-AXX-XXX-B)
T
(PX20X-BXX-XXX-B)
U
S
(Material outlet)
(PX20X-FXX-XXX-B)
TROUBLE SHOOTING
Product discharged from exhaust outlet.
Check for diaphragm rupture.
Check tightness of (14) diaphragm screw.
Air bubbles in product discharge.
Check connections of suction plumbing.
Check “O” rings between intake manifold and inlet side fluid
caps.
Check tightness of (14) diaphragm screw.
Motor blows air or stalls.
Check (176) check valve for damage or wear.
Check for restrictions in valve / exhaust.
y
y
y
y
y
y
y
Low output volume, erratic fl ow or no fl ow.
Check air supply.
Check for plugged outlet hose.
Check for kinked (restrictive) outlet material hose.
Check for kinked (restrictive) or collapsed inlet material hose.
Check for pump cavitation - suction pipe should be sized at
least as large as the inlet thread diameter of the pump for
proper fl ow if high viscosity fl uids are being pumped. Suction
hose must be a non-collapsing type, capable of pulling a high
volume.
Check all joints on the inlet manifolds and suction connections.
These must be air tight.
Inspect the pump for solid objects lodged in the diaphragm
chamber or the seat area.
y
y
y
y
y
y
y
DIMENSIONAL DATA
Dimensions shown are for reference only, they are displayed in inches and millimeters (mm).
Figure 4
DIMENSIONS
A - see below
B - 24-3/4” (628.7 mm)
C - 10-1/16” (255.6 mm)
D - see below
E - 16-3/16” (411.2 mm)
F - 12” (304.8 mm)
G - 26-1/4” (666.8 mm)
H - 9-1/16” (230.2 mm)
J - 10-1/16” (255.6 mm)
K - 9/16” (14.3 mm)
L - see below
M - 5/8” (15.9 mm)
N - 4.834” (122.8 mm)
P - 21-5/8” (548 mm)
Q - 27-7/8” (708.0 mm)
R - see below
S - 2” A.N.S.I. / DIN Flange
T - 2 - 11-1/2 N.P.T.F. - 1
U - Rp 2 (2 - 11 BSP, parallel)
“A”
“D”
“L”
“R”
PX20X-XAX-XXX-B( )
19-3/4” (501.7 mm)
1-7/8” (47.6 mm)
2” (50.8 mm)
12-15/16” (328.6 mm)
PX20X-XCX-XXX-B( )
19-3/4” (501.7 mm)
1-7/8” (47.6 mm)
2” (50.8 mm)
12-15/16” (328.6 mm)
PX20X-AHX-XXX-B( )
19-1/4” (488.7 mm)
2-1/2” (63.5 mm)
2-3/32” (53.0 mm)
13-9/16” (344.5 mm)
PX20X-BHX-XXX-B( )
19-1/4” (488.7 mm)
2-1/2” (63.5 mm)
2-3/32” (53.0 mm)
13-9/16” (344.5 mm)
PX20X-ASX-XXX-B( )
19-3/8” (492.1 mm)
2-1/2” (63.5 mm)
2-3/32” (53.2 mm)
13-9/16” (344.5 mm)
PX20X-BSX-XXX-B( )
19-3/8” (492.1 mm)
2-1/2” (63.5 mm)
2-3/32” (53.2 mm)
13-9/16” (344.5 mm)
PX20X-FHX-XXX-B( )
19-1/4” (488.7 mm)
2-1/2” (63.5 mm)
3-1/4” (82.6 mm)
13-9/16” (344.5 mm)
PX20X-FSX-XXX-B( )
19-3/8” (492.1 mm)
2-1/2” (63.5 mm)
3-1/4” (82.6 mm)
13-9/16” (344.5 mm)
Dotted lines show optional
67263 muffl
er assembly.
