Graco 406807C User Manual

GENUINE GRACO PARTS AND ACCESSORIES

Bolt-Through Diaphragm Kits

Husky® 1050 Diaphragm Pumps

Important Safety Instructions

Read all warnings and instructions in the

Husky Repair/Parts manual. Save all instructions.

Kit 24B622, Buna-N Kit 24B623, Geolast Kit 24B624, TPE Kit 24B628, Santoprene Kit 24B629, Fluoroelastomer

1050 Air-Operated Diaphragm Pump

101

406807C

Ref. Description Qty.

101 DIAPHRAGM, material shown at left 2 103 O-RING, shaft bolt, for 1050A (aluminum),

1050H (hastelloy), and 1050S (stainless

steel) models 104 TOOL, diaphragm install 1 105 O-RINGS, manifold, PTFE (not shown) 8

Rounded side faces diaphragm.

ENG

104

Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441

(Plastic Pumps)

(Metal Pumps)

103

ti14022a

Apply lithium-based grease.

Torque to 20-25 ft-lb (27-34 N•m) at 100 rpm maximum.

AIR SIDE markings on diaphragm must face center housing.

See reverse for assembly instructions.

Assembly

1. Follow the steps for your type of pump to assemble the diaphragms and attach one of the fluid covers.

Metal Pumps (1050A, 1050H, 1050S)

a. Install the o-ring (102) on the shaft bolt.

b. Assemble the fluid side plate, the diaphragm

(101), and the air side diaphragm plate on the bolt exactly as shown on page 1.

c. Apply medium-strength (blue) Loctite or equiva-

lent to the bolt threads. Screw the bolt into the shaft hand tight.

d. Grease the shaft u-cups (in center housing) and

the length and ends of the diaphragm shaft. Slide the shaft into the housing.

e. Repeat Steps a-c for the other diaphragm

assembly.

f. Hold one shaft bolt with a wrench and torque

the other bolt to 20-25 ft-lb (27-34 N•m) at 100 rpm maximum. Do not over-torque.

e. Hold one of the plates with a wrench, and

torque the other plate to 20-25 ft-lb (27-34 N•m) at 100 rpm maximum. Do not over-torque.

f. Reattach the first fluid cover. See Torq ue

Instructions in the manual.

2. To ensure proper seating and extend diaphragm life, attach the second fluid cover with air pressure on the pump.

a. Place the supplied tool (104) where the air valve

gasket normally goes. Arrows (A) must face toward the fluid cover that is already attached.

104

ti14120a

g. Reattach the first fluid cover (3). See To rque

Instructions in the manual. Go to Step 2.

Plastic Pumps (1050C, 1050F, 1050P)

a. Assemble the diaphragm (101) and the air side

diaphragm plate onto the fluid side plate.

b. Apply medium-strength (blue) Loctite or equiva-

lent to the threads of the screw on the fluid side plate. Screw the assembly into the shaft hand-tight.

c. Grease the shaft u-cups (in center housing) and

the length and ends of the diaphragm shaft. Slide the shaft into the housing.

d. Repeat Steps a and b for the other diaphragm

assembly.

b. Reattach the air valve.

c. Supply a minimum of 20 psi (0.14 MPa, 1.4 bar)

air pressure to the air valve. Shop air may be used. The diaphragm will shift so the second fluid cover will seat properly. Keep air pressure on until the second fluid cover is attached.

d. Attach the second fluid cover. Follow Torque

Instructions in the manual.

e. Remove the air valve and the tool (104).

NOTE: If you are replacing the diaphragms but not the air valve, you must remove the air valve and gasket, put the tool in place of the gasket, and put the air valve back on to get the air pressure needed for proper installation of the second fluid cover. Remember to remove the tool and replace the gasket when finished.

3. Reassemble the ball check valves and manifolds as explained in the manual.

2 406807C