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Back Pressure Fluid Valve Manual 77-1662
- Back Pressure Fluid Valve Manual 77-1662 [ English ]
BACK PRESSURE FLUID VALVE
FLOW COEFFICIENT (CV) = 2.0 MAX.
1/2 NPT(F) INLET AND OUTLET
SERVICE MANUAL EN®
77-1662-R15
77-1662-R15 (08/2025) 1 / 4 www.binks.com
LOCK OUT / TAG-OUT
Failure to de-energize, disconnect, lock out and tag-out all power
sources before performing equipment maintenance could cause
serious injury or death.
OPERATOR TRAINING
All personnel must be trained before operating finishing
equipment.
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture,
malfunction, or start unexpectedly and result in serious injury.
PROJECTILE HAZARD
You may be injured by venting liquids or gases that are released
under pressure, or flying debris.
PINCH POINT HAZARD
Moving parts can crush and cut. Pinch points are basically any
areas where there are moving parts.
INSPECT THE EQUIPMENT DAILY
Inspect the equipment for worn or broken parts on a daily basis.
Do not operate the equipment if you are uncertain about its
condition.
In this part sheet, the words WARNING, CAUTION and NOTE are used to
emphasize important safety information as follows:
Hazards or unsafe practices which
could result in minor personal injury,
product or property damage.
! CAUTION
Hazards or unsafe practices which
could result in severe personal
injury, death or substantial property
damage.
! WARNING
Important installation, operation or
maintenance information.
NOTE
Read the following warnings before using this equipment.
READ THE MANUAL
Before operating finishing equipment, read and understand all
safety, operation and maintenance information provided in the
operation manual.
WEAR SAFETY GLASSES
Failure to wear safety glasses with side shields could result in
serious eye injury or blindness.
NEVER MODIFY THE EQUIPMENT
Do not modify the equipment unless the manufacturer provides
written approval.
IT IS THE RESPONSIBILITY OF THE EMPLOYER TO PROVIDE THIS INFORMATION TO THE OPERATOR OF THE EQUIPMENT.
FOR FURTHER SAFETY INFORMATION REGARDING THIS EQUIPMENT, SEE THE GENERAL EQUIPMENT SAFETY BOOKLET (77-5300).
KNOW WHERE AND HOW TO SHUT OFF THE EQUIPMENT
IN CASE OF AN EMERGENCY
PRESSURE RELIEF PROCEDURE
Always follow the pressure relief procedure in the equipment
instruction manual.
NOISE HAZARD
You may be injured by loud noise. Hearing protection may be
required when using this equipment.
STATIC CHARGE
Fluid may develop a static charge that must be dissipated through
proper grounding of the equipment, objects to be sprayed and all
other electrically conductive objects in the dispensing area. Improper
grounding or sparks can cause a hazardous condition and result in
fire, explosion or electric shock and other serious injury.
WEAR RESPIRATOR
�Toxic fumes can cause serious injury or death if inhaled.
Wear a respirator as recommended by the fluid and solvent
manufacturer’s Safety Data Sheet.
TOXIC FLUID & FUMES
�Hazardous fluid or toxic fumes can cause serious injury or death if
splashed in the eyes or on the skin, inhaled, injected or
swallowed. LEARN and KNOW the specific hazards or the fluids
you are using.
KEEP EQUIPMENT GUARDS IN PLACE
Do not operate the equipment if the safety devices have been
removed.
! WARNING
AUTOMATIC EQUIPMENT
Automatic equipment may start suddenly without warning.
FIRE AND EXPLOSION HAZARD
Improper equipment grounding, poor ventilation, open flame or
sparks can cause a hazardous condition and result in fire or
explosion and serious injury.
MEDICAL ALERT
Any injury caused by high pressure liquid can be serious. If you
are injured or even suspect an injury:
• �Go to an emergency room immediately.
• �Tell the doctor you suspect an injection injury.
• �Show the doctor this medical information or the medical alert
card provided with your airless spray equipment.
• �Tell the doctor what kind of fluid you were spraying or
dispensing.
GET IMMEDIATE MEDICAL ATTENTION
To prevent contact with the fluid, please note the following:
• �Never point the gun/valve at anyone or any part of the body.
• �Never put hand or fingers over the spray tip.
• �Never attempt to stop or deflect fluid leaks with your hand,
body, glove or rag.
• �Always have the tip guard on the spray gun before spraying.
• �Always ensure that the gun trigger safety operates before
spraying.
EN
77-1662-R15 (08/2025)2 / 4www.binks.com
INSTALLATION
1. �Install back pressure valve assembly so that arrow
underneath valve body points downstream.
2. �Tighten inlet and outlet connections securely.
3. �Valve may be installed in any position. However,
gauge assembly must be upright. Install gauge
assembly in either of the two 1/4 NPT outlets.
OPERATION
1. �With system in operation, turn 84-351 Handle
clockwise until desired back pressure or flow rate is
obtained. To reduce back pressure, turn handle
counter-clockwise.
2. �Tighten 20-262-1 Nut to lock handle in desired back
pressure position.
3. �Higher back pressure reduces flow rate. Lower back
pressure increases flow rate.
4. �If back pressure valve buzzes during or after initial
start-up, it means air is in the system. If buzzing
continues, reduce back pressure until buzzing ceases
then readjust to desired back pressure.
MAINTENANCE
1. �Back pressure valve can be serviced without
removing valve from line.
2. �To replace diaphragms, gaskets, or seats, turn
84-351 Handle counter-clockwise until tension on
84-365 Spring is relieved.
3. �Remove 20-537-1 Screws.
4. �To replace diaphragms, or to replace 84-388-5
Gasket, remove 84-363 Valve.
5. �To reassemble, reverse procedure described above.
When reassembling, note position sequence of
diaphragms and gaskets. The 84-388-5 Gasket fits
between the 84-330 and 84-399 Diaphragms.
The diaphragms are located below the 84-463
Gasket. (See enlarged view.)
INSTRUCTIONS: Binks MODEL 84-501 BACK PRESSURE FLUID VALVE
FLOW COEFFICIENT (CV) = 2.0 MAX. 1/2 NPT(F) INLET AND OUTLET
Part No. Description
Ind.
Parts
Req'd.
20-262-1 HEX NUT, 1/2-13 1
20-537-1 HEX CAP SCREW, 1/4-20 x 3/4-in. long 6
20-2848 ELBOW 1
20-5632 NIPPLE, 1/4 NPT x 1-1/4 in. long 1
20-6131 PLUG, Stainless Steel 1
83-1290 GAUGE, 150 PSI, Brass 1
83-2052 LENS, Gauge Replacement 1
83-2744 GAUGE, 200 PSI, Stainless Steel 1
84-40 CONNECTION, Brass 1
— GAUGE & CONNECTION ASS'Y., Brass 1
— BODY, Electroless Nickel Coated 1
84-246 GAUGE & DAMPER ASS'Y., 200 PSI 1
84-328 DISC 2
Part No. Description
Ind.
Parts
Req'd.
84-330† DIAPHRAGM, Upper, Nylon 2
84-348 CONNECTOR, Stainless Steel 1
84-351 HANDLE 1
84-359 BONNET 1
84-362 RETAINER 1
84-363 VALVE 1
84-364 SEAT 1
84-365 SPRING 1
84-388-5† GASKET, Inner (5 pack) 1
84-399† DIAPHRAGM, Lower, PTFE 2
84-463† GASKET, Outer 1
85-10 BUTTON 1
PARTS LIST
When ordering, please specify Part No.
† Also available in Repair Kit 6-1310. Kit not included. Please order separately.
EN
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WARRANTY POLICY
This product is covered by Binks’ materials and workmanship limited warranty.
The use of parts or accessories from sources other than Binks will void all warranties.
Failure to follow reasonable maintenance guidance provided can invalidate the warranty.
For specific warranty information, please contact Binks.
For technical assistance or to locate an authorized distributor, contact one of our
international sales and customer support locations listed below.
REGION BINKS CONTACT WARRANTY PAGE
Americas Tel: 1-800-992-4657
Europe, Africa, Middle East Tel: +4401202571111
India marketingroa@binks.com
China Tel: +862133730108
Korea Tel: +82313663303
Japan Tel: +81457856421
Australia Tel: +61085257555
Binks is a global leader in innovative finishing technologies.
Binks reserves the right to modify equipment specifications without prior notice.
Binks®, DeVilbiss® and Ransburg® are registered trademarks of Binks US, LLC.
®
EN WARRANTY
©2025 Binks US, LLC. All rights reserved.
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Obey local or municipal regulations for product recycling and disposal.
EN
