MODEL #4620
Recommended Installation, Maintenance
and Inspection Instructions
Pressure Vacuum Vent
WARNING Designed for use at motor fuel dispensing facilities only.
INSTALLATION INSTRUCTIONS
NOTE: Always adhere to installation / usage instructions and warnings. Improper use may
result in injury, damage or hazardous spill.
Model #4620 can be installed on either a threaded or non-threaded 2" vent pipe.
1. Remove the vent from the carton and visually inspect for any shipping
damage.
2. Hold the vent upside down and place the seal into the vent opening.
3. Back the four (4) set screws out far enough so the vent will slip over the
vent pipe.
4. Place vent on top of vent pipe and push / pull down on the vent to slightly
compress the seal.
5. Tighten the four (4) set screws rmly so P/V vent does not rotate.
CAUTION: DO NOT ALTER OR COVER THE P/V VENT
TESTING / MAINTENANCE / INSPECTION
Testing Criteria Per TP201.1E and Exhibit 4 of applicable Phase 1 E.O.
4620
Leak rate: Pressure = .05 CFH @ 2" wc, Vacuum = .21 CFH @ -4" wc.
Cracking Pressure = 2½" to 6" wc, Vacuum = -6" to -10" wc.
• All drive aways, maintenance
Annually Inspect the P/V
vent valve for foreign
objects:
1. Remove the screws that
hold on the top cover. Do not
remove the screens.
2. Remove any debris from inside
the lower cover.
3. Check the drain holes in the
lower cover.
4. Reinstall the top cover.
5. Tighten the screws rmly.
Husky Corporation • 2325 Husky Way • Pacic, MO 63069 • Phone: (800) 325-3558 • Fax: (636) 825-7300 • www.husky.com
Page 1 009061-2 11/2009
and inspection activities must be
logged using the serial number of
the individual product.
• Apply city, state, or federal testing
regulations as appropriate.
ANY TEST / INSPECTION
FAILURE REQUIRES IMMEDIATE
EQUIPMENT REPLACEMENT OR
REMOVAL FROM SERVICE.
MADE IN THE USA
ALWAYS ADHERE TO INSTALLATION / USAGE INSTRUCTIONS AND WARNINGS.
Improper use may result in injury, damage, or hazardous spill.
GENERAL WARNINGS / INSTRUCTIONS
• Use of equipment is at individuals’ own
risk.
• Always abide and adhere to city, state, and
federal regulations regarding use and
installation of dispensing equipment.
• Always follow the dispenser
manufacturer’s instructions.
• Always turn off all power to dispenser
during maintenance and inspection
activities.
• Always close the shear valves during
maintenance and inspection activities.
• Always relieve pressure from system prior
to performing maintenance activities.
• Always check continuity after installation
using a megohmeter (Refer to PEI RP 400
for details).
• Always replace or remove from service
damaged or leaking dispensing equipment
immediately.
• Always report leaks / spills / accidents
to appropriate authorities.
• Always wear appropriate safety equipment
during maintenance activities.
• Always have appropriate re extinguishing
equipment within 5 ft / 1.5 m of dispensers.
• Always place containers on the ground
before lling.
• Always discharge static electricity before
using or servicing equipment by touching
a metal part of the dispenser before and
after fueling vehicle.
• Never smoke within 20 ft / 6.1 m of
dispensers.
• Never keep in service past recommended
life.
• Never leave the nozzle unattended while
dispensing fuel.
• Never use sparking or aming devices
within 20 ft / 6.1 m of dispensers.
• Never use power tools near dispensers or
to aid in the installation process.
• Never use cell phone within 20 ft / 6.1 m of
dispensers.
• Never reenter car when fueling vehicle.
• Never allow gasoline to touch eyes or skin.
• Never use at ow rates in excess of
regulatory guidelines.
• Never use at ow rates less than 5 gpm /
18.9 Lpm.
• Never dispense ammable material into
unapproved containers.
• Never dispense fuel without a valid
driver’s license.
CAUTION: DO NOT ALTER OR COVER THE P/V VENT.
WARRANTY
VAPOR PRODUCTS – Husky Corporation will, at its option, repair, replace, or credit the purchase price of any Husky
manufactured product which proves upon examination by Husky, to be defective in material and/or workmanship for a period of one (1)
year of installation or fteen (15) months from the manufacture date of shipment by Husky, whichever occurs rst. The warranty period on
repaired or replacement vapor recovery products is only for the remainder of the warranty period of the defective product.
CONVENTIONAL PRODUCTS – Husky Corporation will, at its option, repair, replace, or credit the purchase price of any Husky
manufactured product which proves upon examination by Husky, to be defective in material and/or workmanship for a period of one (1)
year from the manufacture date of shipment by Husky.
Buyer must return the products to Husky, transportation charges prepaid. This Warranty excludes the replaceable bellows,
bellows spring assembly, spout assembly and scuff guard, unless (i) damage is obvious when the product is removed from shipping carton
and (ii) the defective product is returned to Husky prior to use. This warranty does not apply to equipment or parts which have been installed
improperly, damaged by misuse, improper operation or maintenance, or which are altered or repaired in any way.
The warranty provisions contained herein apply only to original purchasers who use the equipment for commercial or
industrial purposes. There are no other warranties of merchantability, tness for a particular purpose, or otherwise, and any other such
warranties are hereby specically disclaimed.
Husky assumes no liability for labor charges or other costs incurred by Buyer incidental to the service, adjustment, repair, return,
removal or replacement of products. Husky assumes no liability for any incidental, consequential, or other damages under any warranty,
express or implied, and all such liability is hereby expressly excluded.
Husky reserves the right to change or improve the design of any Husky fuel dispensing equipment without assuming any
obligations to modify any fuel dispensing equipment previously manufactured.
Husky Corporation • 2325 Husky Way • Pacic, MO 63069 • Phone: (800) 325-3558 • Fax: (636) 825-7300 • www.husky.com
Page 2 009061-2 11/2009
3" to 2" ADAPTOR INSTALLATION INSTRUCTIONS
Part #5041
1. Visually inspect the o-ring and threads for chips, dirt & debris.
2. Apply fuel resistant pipe sealant to the 3 in / 76.2 mm NPTF threads of the vent pipe.
3. Screw the P/V vent adaptor onto the vent stack and tighten to a range of 20 - 50 lbf•ft /
27.1 - 67.8 N•m. Do not overtighten.
4. Install the P/V vent according to manufacturer's installation instructions.
TEST ADAPTOR INSTALLATION INSTRUCTIONS
Part #5426
NOTE: This adaptor is designed to t on the inlet of the P/V Vent to allow for eld and lab tests.
1. Place P/V vent test adaptor on a at surface with the threads facing up.
2. Remove the four (4) set screws from the P/V vent and seal the holes with electrical
tape.
3. Slide inlet of P/V vent over the adaptor so it seats on the seal.
4. Place a 4 lb / 1.8 kg weight on top of the P/V vent.
5. Conrm the internal seal is compressed.
6. Attach the 3/16" hose (Tygon fuel tubing) from the test apparatus to the hose barb on
the side of the P/V vent test adaptor.
7. After testing, remove weight and pull P/V vent off the P/V vent test adaptor.
8. Remove 3/16" hose from the P/V vent test adaptor.
9. Remove tape from P/V vent and reinstall the four (4) set screws.
TROUBLESHOOTING GUIDE
Pressure Decay Test Failure... 1. Test vent to CARB TP201.1E.
2. Replace P/V vent.
For stations with ISD monitoring
Vapor leak... 1. Verify other equipment is not the
cause.
2. Test vent to CARB TP201.1E
3. Replace P/V vent.
Exceeds allowable system
cracking pressure... 1. Replace P/V vent
GENERAL TECHNICAL DATA
Fuel Type Test and warranty for gasoline and diesel fuel
Body Sand cast aluminum
Screens Stainless Steel 40 mesh
Seal Nitrile Foam
Covers Aluminum
Weight 1.2 lbs / 0.5 kg
Inlet 2 in / 50.8 mm slip-on
Case Quantity 20
Listings
Patents 5,957,157
Husky Corporation • 2325 Husky Way • Pacic, MO 63069 • Phone: (800) 325-3558 • Fax: (636) 825-7300 • www.husky.com
CARB Executive Orders: G-70-186; G-70-188; G-70-196; G-70-204-A;
G-70-209-A; G-70-150-AE; G-70-153-AD; G-70-183-AA; G-70-191-AA
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