Alemite 7716-D1 User manual

Service Guide
8568
Alemite Corporation
PO Box 473515, Charlotte, North Carolina 28247-3515
Copyright
©
1995 by Alemite Corporation
This document contains confidential information that is the property of Alemite Corporation
397140
and is not to be copied, used, or disclosed to others without express written permission.
Revision (11-95)
SER 7716-D1
7716-D1
Specifications
Material Inlet Material Outlet
(at Body)
Max. Material
Pressure Max. Displacement/Cycle
psi Bars Ounce Grams
1/4 “ NPTF (f) 1/8 “ NPTF (f) 5,000 345 1 28.4
Table 1 Model 7716-D1 Specifications
Description and Operation
The model 7716-D1 control valve handles
fibrous, light, and heavy greases including
semifluid and fluid lubricants.
This control valve regulates the amount of
product dispensed. It delivers from zero to 1
ounce (28.4 grams) of material per cycle
[depress and release the trigger].
When the lever is depressed, it delivers 1/2
of a preset measured amount of product.
Release the lever to complete the preset
delivery. An adjustment screw is set to obtain
the amount required.
8-7/8 "
(22.5 cm)
Material
Outlet
Material Inlet
High-Pressure Measuring Control Valve
Figure 1 High-Pressure Measuring Control Valve Model 7716-D1

SER 7716-D1 High-Pressure Measuring Control Valve
Revision (11-95) 2 Alemite Corporation
35
41
14
25
26
1
2
2
8
9
10
345
6
543
711
12
13
15
21
22
23
24
16
17
18
19 20
1a
Accessory Item
27
28
29
30
31
34
33
32
13
14
36 37
38
39
40
Figure 2 High-Pressure Measuring Control Valve Model 7716-D1 - Exploded View

High-Pressure Measuring Control Valve SER 7716-D1
Alemite Corporation 3 Revision (11-95)
Item
No. Part No. Description Qty Notes Numeric Order Part # (Item #)
1Plug, 1-5/16 " -20 16304-B (41)
2171001-20 O-Ring, 1-5/16 " OD x 1-1/16 " ID 245569 (36)
3171009-9 O-Ring, 1-1/16 " OD x 15/16 " ID 249136 (40)
4337044 Packing, V-Block, 1.20 " OD 2
53952 (9)
5338971 Ring, Split, Backup (Teflon) 2
76839 (25)
6326355 Piston, Measuring 1
77795 (20)
7328499 Body, Valve 1
77863 (26)
8319211 Screw, Packing, 1-5/16 " -20 x 13/16 " -20 1131132 (32)
9V-Packing 1131133 (33)
10 Nut, 13/16 " -20 1
131135 (34)
11 328224 Plug, 1/4 " -28 1
131137 (31)
12 305413 Screw, Adjusting, 1/2 " -20 1170779 (19)
13 Seal, 3/4 " OD x 3/8 " ID 2171001-20 (2)
14 Washer, 0.372 " (Brass) 2171009-9 (3)
15 Retainer, 15/16 " -20 x 7/8 " -20 1171013-17 (27)
16 302678 Washer, 0.265 " 1
172190-32 (13)
17 305784 Spring, 2 " Long 1302678 (16)
18 Cap, 15/16 " -20 x 1/4 " -20 1
305412
(10)
19 170779 Setscrew, Hexagon Head Socket, 1/4 “ -20 x 5/8 " 1305413 (12)
20 Nut, 1/4 " -20 1
305414
(37)
21 Gasket, Valve Seat 1305415 (24)
22 305780 Valve and Seat Assembly, Slide 1
305416
(38)
23 305426 Guide, Valve 1
305418
(35)
24 305415 Lever 1
305419
(21)
25 Washer, Lock, 6 2305426 (23)
26 Screw, 6 -32 x 3/8 " 2
305431
(30)
27 171013-17 O-Ring, 1.00 " OD x 13/16 " ID 1
305432
(29)
28 Handle, Inlet 1305780 (22)
29 Bushing, 13/16 " -20 1305783 (39)
30 Gasket (Aluminum) 1305784 (17)
31 Stud, 8 -32 1
305785
(18)
32 131132 Strainer, 1.00 " Long (Compressed) 1
305786
(15)
33 131133 Washer, Retaining, 0.172 " 1
310107
(14)
34 Nut, Knurled 8 -32 1319211 (8)
35 Screw, Packing, 7/8 " -20 1
319212
(1)
36 45569 Nut, 10 -32 1326355 (6)
37 Setscrew, 10 -32 x 1.00 " 1328224 (11)
38 Pin, 1-15/16 " Long 1
328498
(28)
39 305783 Stem, Valve Actuation 1328499 (7)
40 49136 Extension, Rigid 1337044 (4)
41 6304-B Coupler, Hydraulic 1338971 (5)
Optional Equipment
1a 6778 Extension, Rigid/Flexible
Legend :
Part numbers left blank (or in italics ) are not available separately
designates a repair kit item
Repair Kits
Part No. Kit Symbol Description
398971-2
Kit, Major Repair
393530-32
Kit, Minor Repair [includes five (5) of item number 13 ]

SER 7716-D1 High-Pressure Measuring Control Valve
Revision (11-95) 4 Alemite Corporation
Accessories
WARNING
Altering the control valve with the addition of a flexible hose extension is
not recommended. Personal injury may occur. If a flexible extension is mandatory,
use only Alemite Corporation extension hose number 6778.
Preventive Maintenance
Refer to section entitled Overhaul for details on the procedures necessary to perform
maintenance.
Part Number Description
6778 Rigid/Flexible Extension
Table 2 High-Pressure Measuring Control Valve Model 7716-D1 Accessory
Daily Weekly Monthly Quarterly
Wipe Exterior with Clean Cloth Inspect for Leakage 1. Clean Strainer (
32 ) *
2. Inspect Valve Guide ( 23 ) *
* Refer to Figure 2 Parts List for Parts Identification
Table 3 High-Pressure Measuring Control Valve Model 7716-D1
Preventive Maintenance Schedule

High-Pressure Measuring Control Valve SER 7716-D1
Alemite Corporation 5 Revision (11-95)
5. Remove Retaining Washer ( 33 ), Strainer ( 32 ), and the
Stud from the Bushing.
6. Unscrew the Inlet Handle from the Valve Body.
• Use a strap wrench or other suitable tool that will not
mar the surface of the Inlet Handle.
7. Remove O-Ring ( 27 ) from the Inlet Handle.
Valve Body
Lever and Valve Actuation Stem Travel Assembly
8. Remove Valve Guide ( 23 ) from the Valve Body.
• Use needle-nose pliers.
9. Remove Pin ( 38 ) from the Valve Body.
• Drive the Pin from the opposite of the knurled end
with a punch and hammer.
10. Remove Lever ( 24 ) from the Valve Body.
11. Remove Nut ( 36 ) and Setscrew ( 37 ) from the Lever as
required.
12. Unscrew Packing Screw ( 35 ) from the Valve Body.
13. Remove Valve Actuation Stem ( 39 ), Washer ( 14 ), and
Seal ( 13 ) from the Valve Body.
NOTE : The earlier units contain a leather
washer (not illustrated) that is no longer
required.
14. Unscrew Cap ( 18 ) from Retainer ( 15 ).
15. Remove Spring ( 17 ) and Washer ( 16 ) from the
Retainer.
16. Unscrew Nut ( 20 ) and Setscrew ( 19 ) from the Cap if
necessary.
17. Unscrew the Retainer from the Valve Body.
18. Remove the additional Washer ( 14 ), and Seal ( 13 )
from the Valve Body.
Slide Valve and Seat Assembly
19. Remove the Slide Valve portion of Slide Valve and
Seat Assembly ( 22 ) from the Valve Body.
20. Remove Screws ( 26 ) and Lock Washers ( 25 ) that
secure the Seat to the Valve Body.
21. Remove the Seat and Gasket ( 21 ) from the Valve Body.
Adjusting Screw Assembly
22. Unscrew Plug ( 1 ) from the Valve Body.
• Remove O-Ring ( 2 ) from the Plug.
Overhaul
NOTE : Refer to Figure 2 and/or Figure 3
for component identification on all overhaul
procedures.
Prior to performing any maintenance procedure, the
following safety precautions must be observed. Personal
injury may occur.
WARNING
Do not use halogenated hydrocarbon
solvents such as methylene chloride or 1,1,1-
trichlorethane in this valve. An explosion can
result when aluminum and/or zinc-plated parts
come in contact with halogenated hydrocarbon
solvents.
Release all pressure within the system prior to
performing any overhaul procedure.
• Disconnect the air supply line from the pump
motor.
• Into an appropriate container, operate the
control valve to discharge remaining pressure
within the system.
Never point a control valve at any portion of your
body or another person. Accidental discharge of
pressure and/or material can result in personal
injury.
Read each step of the instructions carefully. Make
sure a proper understanding is achieved before
proceeding.
Removal
Remove the control valve from its delivery line.
Disassembly
1. ClampValve Body ( 7 ) vertically in a soft-jaw vise with
the Inlet Handle facing upward.
2. Unscrew Extension ( 40 ) and Coupler ( 41 ) from the
Valve Body.
Inlet Handle
3. Unscrew Bushing ( 29 ) from Inlet Handle ( 28 ).
• Remove Gasket ( 30 ) from Bushing.
4. Unscrew Knurled Nut ( 34 ) from Stud ( 31 ).

SER 7716-D1 High-Pressure Measuring Control Valve
Revision (11-95) 6 Alemite Corporation
45
3
2
1
5432
6
7
89
10
12
15 16 17 18 2019
24
38
39
35
36 37
40
13 14
13
14
26
21
25
22
23
27
28
34
33
31
32
30
29
11
NOTE: The earlier units contain
a leather washer (not illustrated)
that is no longer required.
23. Unscrew Nut ( 10 ) from Packing Screw ( 8 ).
24. Unscrew the Packing Screw and Adjusting Screw
assembly from the Valve Body.
25. Remove O-Ring ( 2 ), V-Packing ( 9 ), and Adjusting
Screw ( 12 ) from the Packing Screw.
26. Push the Measuring Piston assembly from the Valve
Body.
IMPORTANT: Backup Ring ( 5 ) is of Teflon
construction. The earlier model contained
leather washers.
27. Remove O-Ring ( 3 ), V-Block Packing ( 4 ), and Backup
Ring ( 5 ) from each end of Measuring Piston ( 6 ).
28. Unscrew Plug ( 11 ) from the Valve Body as required.
Figure 3 High-Pressure Measuring Control Valve Model 7716-D1 - Section View
Refer to Figure 2 Parts List
Clean and Inspect
NOTE : Use a repair kit for replacement
parts. Make sure all the components are
included in the kit before discarding used
parts.
1. Clean all metal parts in a modified petroleum-based
solvent. The solvent should be environmentally safe.
2. Inspect all parts for wear and/or damage.
• Replace as necessary.
3. Closely inspect the mating surfaces of all components
for any imperfections. Ensure a smooth and clean
contact is obtained when assembled.
EXAMPLE : Make sure the halves to Slide
Valve and SeatAssembly ( 22 ) mate properly.
for Parts Identification

High-Pressure Measuring Control Valve SER 7716-D1
Alemite Corporation 7 Revision (11-95)
Assembly
NOTE : Prior to assembly, certain
components require lubrication in clean oil.
Refer to Table 4 for details.
Valve Body
Measuring Piston Assembly
1. Install Backup Ring ( 5 ) onto each end of Measuring
Piston ( 6 ).
• Seat each Ring against the center of the Piston.
2. Install V-Block Packing ( 4 ) onto each end of the
Measuring Piston.
• Make sure the lip of each Packing faces the outside
of the Piston.
3. Install O-Ring ( 3 ) onto each end of the Piston.
4. ClampValve Body ( 7 ) vertically in a soft-jaw vise with
the Inlet Handle port facing downward.
CAUTION
Use care installing the Piston assembly past the
threads of the Valve Body. Damage to the Packings
can occur.
5. Install the Piston assembly into the Valve Body.
Adjusting Screw Assembly
6. Install O-Ring ( 2 ) onto Plug ( 1 ).
• Make sure the O-ring does not roll.
7. Screw the Plug assembly into the discharge end of the
Valve Body.
8. From the opposite end of the Valve Body, seat the
Measuring Piston assembly against the Plug.
9. Install the additional O-Ring ( 2 ) onto Packing
Screw ( 8 ).
• Make sure the O-ring does not roll.
10. Grease the threads of Adjusting Screw ( 12 ).
11. Screw the Adjusting Screw fully into the Packing
Screw. This setting allows the maximum amount of
product to be dispensed.
12. Install V-Packing ( 9 ) [lip-end first] onto the stem of the
Adjusting Screw.
13. Screw Nut ( 10 ) onto the Packing Screw.
14. Screw the Packing Screw assembly into the Valve
Body.
• Tighten securely.
15. Tighten the Nut to the Packing Screw.
Slide Valve and Seat Assembly
16. Turn the Valve Body assembly end-for-end in the vise.
17. Install Gasket ( 21 ) into the Valve Body.
• Make sure the holes align properly.
18. Install Lock Washer ( 25 ) and Screw ( 26 ) into both
ends of the seat portion of the Slide Valve and Seat
assembly ( 22 ).
19. Install the Slide Seat and Screw assembly into the
Valve Body.
• Make sure the screw holes align properly. Tighten
both Screws securely.
20. Grease the face of the Valve portion of the Slide Valve
and Seat assembly ( 22 ).
21. Install the Slide Valve [cavity end first] onto the Seat.
• Make sure the Slide Valve and Seat are in proper
alignment.
Lever and Valve Actuation Stem Travel Assembly
CAUTION
Use care installing Seal (13) past the threads of the
Valve Body. Damage to the Seal can occur.
22. Install Seal ( 13 ) [lip end first] into each end of the
Valve Body.
• Make sure both Seals seat properly.
23. Install Washer ( 14 ) into each end of the Valve Body.
NOTE : The earlier units contain a leather
washer (not illustrated) that is no longer
required
Item No.
1n Figure 2 Description Item No. on Figure 2 Description
2O-Ring, 1-5/16 " OD x 1-1/16 " ID 9V-Packing
3O-Ring, 15/16 " OD x 1-1/16 " ID 13 Seal, 3/4 " OD x 3/8 " ID
4Packing, V-Block, 1.20 " OD 27 O-Ring, 1.00 " OD x 13/16 " ID
Table 4 Lubricated Components

SER 7716-D1 High-Pressure Measuring Control Valve
Revision (11-95) 8 Alemite Corporation
Setscrew
Nut
Stem
Lever
0.010 - 0.030 "
(0.25 - 0.76 mm)
Valve
Body
24. Screw Packing Screw (35) into the Valve Body.
• Tighten securely.
25. Grease Valve Actuation Stem (39).
CAUTION
Do not install the Valve Actuation Stem small
diameter first. Damage to the Seals can occur.
26. Install the Valve Actuation Stem [large diameter first]
through the rearward Washer and Seal first.
• Use a small hammer.
27. Install Valve Guide (23) over theValveActuation Stem
and onto the Slide Valve.
• Make sure the Valve Guide seats properly on the
Stem.
28. Cycle the Stem to ensure the Slide Valve moves freely
and functions properly.
29. Screw Retainer (15) into the Valve Body.
30. Install Washer (16) into the Retainer.
31. Install Spring (17) into the Retainer.
CAUTION
Overcome Spring pressure with Cap (18) before
installation. Cross-threading can occur.
32. Screw Cap (18) onto the Retainer.
33. Screw Setscrew (19) halfway into the Cap.
34. Install Nut (20) onto the Setscrew.
• Do not tighten.
35. Align Lever (24) to the Valve Body,
36. Secure the Lever to the Valve body with Pin (38).
• Use a small hammer and make sure the knurled end
of the Pin is flush with the Valve Body.
37. Screw Setscrew (37) into the Lever.
38. Install Nut (36) onto the Setscrew.
• Do not tighten.
Setscrew Adjustment (Lever Free-Play)
Adjust the Setscrew against the Valve Body until a
0.010 to 0.030 “ [0.25 - 0.76 mm] clearance exists between
the end of the Valve Actuation Stem and the surface of the
Lever. Use a feeler gauge. See Figure 4.
Turn the Setscrew clockwise to increase the amount of
free-play and counterclockwise to decrease the gap.
Tighten the Nut securely.
Inlet Handle
39. Install O-Ring (27) onto Inlet Handle (28).
• Make sure the O-ring does not roll.
40. Screw and seat Stud (31) into Bushing (29).
41. Install Gasket (30) onto the Bushing.
42. Install and seat Strainer (32) onto the Bushing.
43. Position Retaining Washer (33) over the Stud and onto
the Strainer.
44. Screw Knurled Nut (34) onto the Stud.
• The top of the Stud should be flush with top of the
Knurled Nut.
45. Screw the Inlet Handle assembly into the Valve Body
and tighten securely.
• Use a strap wrench or other suitable tool that will not
mar the surface of the Inlet Handle.
46. Screw Extension (40) into the Valve Body.
• Make sure the head of the Extension points toward
the Inlet Handle.
47. Screw Coupler (41) onto the Extension and tighten
securely.
48. Screw Plug (11) into the Valve Body and tighten
securely.
Figure 4 Lever Free-Play

High-Pressure Measuring Control Valve SER 7716-D1
Alemite Corporation 9 Revision (11-95)
Adjusting Screw
Once product flow stops,
loosen Setscrew 1-3/4 turns
Cap
Nut
Installation
Attach the control valve to its delivery line. Tighten the
connection securely.
Operation and Adjustments
WARNING
Should leakage occur anywhere within the
system, disconnect power to the motor. Personal
injury can occur.
Prime and Test
NOTE: Perform the following procedures at
a pressure not to exceed 3000 psi (207 Bars).
Should valve leakage occur at anytime, refer
to the Troubleshooting Chart.
1. Point the control valve into an appropriate collection
container.
2. Allow the pump to deliver grease to the control valve.
• The control valve should show no leakage nor
dispense the product.
3. Cycle the control valve Lever (24) several times.
• Product should flow once air is eliminated from the
control valve (and system).
If the control valve does not dispense the product, refer
to the Troubleshooting Chart.
With the Lever in the released position, no product
should appear at Coupler (41). If product does appear,
refer to the Troubleshooting Chart.
Lever Travel Adjustment
1. Loosen Setscrew (19) from Cap (18).
2. Depress and hold the Lever in the full open position.
3. Turn Setscrew (19) clockwise and allow the Lever to
be moved until product no longer appears.
4. Turn the Setscrew counterclockwise 1-3/4 turns. See
Figure 5.
5. Tighten Nut (20) securely.
Product Delivery Adjustment
NOTE: Figure 6 illustrates product flow
through the Valve Body portion of the
control valve.
Upon assembly, Adjusting Screw (12) was set to allow
the maximum amount of product to be dispensed,
approximately 1 ounce (28.4 grams). One-half of the
product amount is dispensed when the Lever is depressed
and the additional amount when the Lever is released.
Should a lesser amount be required, turn the Adjusting
Screw clockwise to decrease the amount dispensed.
Figure 5 Lever Travel Adjustment

SER 7716-D1 High-Pressure Measuring Control Valve
Revision (11-95) 10 Alemite Corporation
D
D
Lever Depressed
Discharge
Pressure
Chamber A
Chamber B
Lever Released
Discharge
Chamber A
Product Flow
With the lever released and the system pressurized, product enters Port B
and fills Chamber B.
Initial Fill
Lever Depresssed
When the lever is depressed, the slide valve moves to allow product
to enter Port Aand fillChamber A. At the same time the slide valve
aligns Port Bwith Port D. This allows product to flow
from Chamber Bvia Port B and intoPort D to discharge.
Lever Released
When the lever is released, the slide valve moves to allow product to enter Port B
and fill Chamber Bonce again. At the same time the slide valve aligns Port A with Port D.
Product from Chamber A flows via Port A intoPort D to discharge.
Pressure
Chamber B
Pressure
Discharge
Ports
Ports
A
B
A
B
Figure 6 High-Pressure Measuring Control Valve Model 7716-D1 - Section View of Valve Body

High-Pressure Measuring Control Valve SER 7716-D1
Alemite Corporation 11 Revision (11-95)
Troubleshooting Chart
Control Valve in Static Condition or in Unattached Operation
Control Valve Indications Possible Problems Solution
Continuous product flow 1. Foreign material under Slide Valve and
Seat Assembly (22)
2. Worn or damaged V-Block Packings (4)
1. Disassemble, clean, and inspect seat
area. Check mating surfaces and
replace parts as necessary. Locate
and eliminate source of foreign
material. Clean Strainer (32)
2. Replace V-Block Packings (4)
Lever requires to be more fully
depressed before product appears 1. Valve Guide (23) worn or damaged 2. Valve Actuation Stem (39) worm or
damaged
1. Replace Valve Guide (23)
2. Replace Valve Actuation Stem (39)
No product flow during Lever cycle Adjusting Screw (12) set fully closed Adjust setting.
No product flow upon Lever release Setscrew (19) not adjusted properly Adjust setting.
Leakage at Extension (40) Initial tightening not sufficient 1. Tighten Extension (40) into Valve
Body (7)
2. Apply Teflon tape* to Extension
threads
Leakage at rear end of Coupler (41) Initial tightening not sufficient 1. Tighten Coupler into Extension (40)
2. Apply Teflon tape* to Extension
threads
Leakage at Nut (10) Seal (9) worn or damaged. Replace Seal (9)
Leakage at vent hole in Cap (18) Seal (13) worn or damaged. Replace Seal (13)
Leakage at Packing Screw (35) Seal (13) worn or damaged. Replace Seal (13)
Leakage at bottom of Inlet
Handle (28)1. Initial tightening of Bushing (29) not sufficient
2. Crush Gasket (30) not sealing
1. Tighten Bushing (29)
2. Replace Gasket (30)
Control Valve Connected to Fitting
Control Valve Indications Possible Problems Solution
Leakage at front end of
Coupler (41)1. Coupler damaged 2. Coupler to fitting mismatch
3. Foreign or damaged fitting
1. Replace Coupler (41)
2. Replace fitting and/or Coupler (41)
3. Replace with Alemite fitting
* Do not apply Teflon tape to the first two (2) threads. Contamination can occur.
Changes Since Last Printing
Added Teflon Back-Up Ring 338971
Deleted Washer 326355
Deleted Washer 310106

SER 7716-D1 High-Pressure Measuring Control Valve
Revision (11-95) 12 Alemite Corporation