GRACO 24K903 – FKM Bolt-Through Diaphragm Kit, Husky 3300

GRACO 24K903 – FKM Bolt-Through Diaphragm Kit for Husky 3300 Pumps

The GRACO 24K903 is a FKM bolt-through diaphragm kit for Husky 3300 air-operated diaphragm pumps (Ref. 20). It contains two diaphragms enough to rebuild both fluid chambers plus the shaft-bolt O-rings (used on metal pumps only) and anaerobic adhesive.

Specifications

Specification	Detail
Diaphragm material	FKM
Configuration	Bolt-through (single-piece)
Reference no.	20
Fits pumps	Husky 3300A, 3300S, 3300P
Diaphragm bolt torque	110-120 ft-lb (149-163 Nm) at 100 rpm maximum
Adhesive	Anaerobic, medium-strength (included)

Kit Contents

Ref.		Qty
20	Diaphragm, FKM	2
17	O-Ring, shaft bolt (metal pumps only)	2
302	Diaphragm install tool (not included with rubber diaphragms)	1
	Adhesive, anaerobic (not shown)	1

Installation Notes

Rounded side faces the diaphragm.

Apply lithium-based grease to the shaft.

Torque the diaphragm bolt to 110-120 ft-lb (149-163 Nm) at 100 rpm maximum.

AIR SIDE markings on the diaphragm must face the center housing.

Apply primer and the supplied medium-strength adhesive to the shaft-side threads.

For maximum diaphragm life, reduce the pump cycle rate.

Compatible Equipment

Husky 3300 Air-Operated Diaphragm Pumps 3300A (aluminum), 3300S (stainless steel), 3300P (polypropylene)

Related Parts

Other Husky 3300 diaphragm kits (Ref. 20):

24K897 – Buna-N Diaphragm Kit

24K900 – Geolast Diaphragm Kit

24K902 – Santoprene Diaphragm Kit

24K901 – TPE Diaphragm Kit

24K904 – Polychloroprene Diaphragm Kit (standard)

24K898 – Polychloroprene Diaphragm Kit (overmolded)

24K899 – PTFE Diaphragm Kit (overmolded)

24K905 – PTFE/Santoprene Diaphragm Kit (two-piece)

Diaphragm plate kits (sold separately):

24K975 – Air-Side Plate Kit (all 3300 models)

24K906 – Fluid-Side Plate Kit (3300A aluminum)

24K907 – Fluid-Side Plate Kit (3300P polypropylene)

24K908 – Fluid-Side Plate Kit (3300S stainless steel)

Center Section Rebuild Kit: 24K850 – Center Section Rebuild Kit, 3300
Air Valve Rebuild Kit: 24K860 – Air Valve Rebuild Kit, 125 PSI

Reference Manuals

406956 (Page 1) – Bolt-Through Diaphragm Kits, Husky 3300

3A0411 (Page 35) – Husky 3300 Air-Operated Diaphragm Pump, Repair/Parts