Appendix B_26QA142.pdf

DRINKING FOUNTAIN INSTALLATION

U.S. ARMY CORPS OF ENGINEERS

FRANKLIN FALLS DAM

FRANKLIN, NH

STATEMENT OF WORK

APPENDIX B

See Attached

Elkay model LK4420BF1UDBFRK - Owner’s Manual; 11 pages

Elkay model LK4420BF1UDBFRK – Specifications; 2 pages

4420DBBFFR_FTN _A LK4420DBBFFR_FTN_A

1000003949 (Rev. B - 03/20)

INSTALLER

Owners Manual Models 4420BF1UDBFR* and 4420BF1LDBFR*

Bi-Level Tubular Bottle Filler Fountain with Pet Fountain and Sanitary Freeze Resistant Triple Valve Control Assembly

4420BFDBFR Fountains are among the easiest to install Fountains on the market today. To assure you install these models easily and correctly, PLEASE READ THESE SIMPLE INSTRUCTIONS

BEFORE STARTING THE INSTALLATION. CHECK YOUR INSTALLATION FOR COMPLIANCE

WITH PLUMBING, ELECTRICAL, AND OTHER APPLICABLE CODES. After installation, save these instructions for future reference.

MODEL (LK)4420BF1LDBFRMODEL (LK)4420BF1UDBFR

E6COMBJC

Highlight

1000003949 (Rev. B - 03/20)

INSTALLATION INSTRUCTIONS FOR INSTALLING SANITARY FREEZE

TRIPLE VALVE CONTROL ASSY.

1. Prepare trench for water supply and waste drain lines (if required by local codes). The hole should be deep enough to accommodate the PVC column and 5 cubic feet of porous fill (large broken rock). Additional porous fill may be required due to local ground conditions. (See Site Preparation Detail below).

2. Lay drain lines and water supply lines. Provide service shut off valve for maintenance. Flush the water supply line before attaching to the shut off valve.

3. Set PVC column in excavating pit. Connect the water supply line to the inlet on the PVC column. Remove valve assembly from the PVC column by carefully

4. Replace the water valve into the PVC column. Make sure the supply hose coils into the bottom of the PVC column without any kinks. Cap the PVC column, protect the ends of the connecting tubes and backfill the trench. Keep the PVC column vertical at all times.

5. Form the concrete mounting pad and locate the fountain 3/8" minimum fasteners (not included) in the proper position. (Refer to Rough-in for correct location of

6. Double check that the water valve is positioned fully at the bottom of the PVC column. Install insulation into the PVC column and push down onto the top of the water valve.

7. Mount the fountain onto the 3/8" minimum fasteners. (Fasteners not included). Level and shim fountain as required.

8. Connect the drain line, water line and air control lines. Excess lengths should be trimmed from the tubing. The water supply line must be positioned for positive

9. Check for proper operation by using fountain push buttons. If the valve does not work properly check for leaks or kinks in the air control line.

10. After insuring proper operation reassemble fountain. Installation of your fountain is now complete.

IMPORTANT! INSTALLER PLEASE NOTE

* For freeze resistant valve to function properly, the valve must be installed in a non-freezing area or below frost line.

* Tubing must be cut to right length. Do not coil any excess tubing or it will cause the valve to malfunction.

* Do not pull up on lines coming out of the PVC column. This raises the water valve above the frost line. Use the nylon strap (ref. Item 10) to lift the unit to prevent damage to the valve.

General Installation Tips

1. Be sure to flush water supply line before you connect it to the inlet fitting on Freeze Resistant Valve System.

2. There is one combined drain line required for this unit that is for the drinking fountain basin and/or bottle filler drains and the valve/water supply line system. The bowl

3. The column (8" PVC tube) must remain vertical. Be sure it remains vertical when backfilling the excavating trench.

4. When the concrete pad, for mounting the fountain is poured, be sure to allow adequate space around the top of the column for servicing the valve.

5. We recommend that the top of the column be flush or slightly above the top height of the concrete pad.

6. You should test the unit before you backfill. Simply blow on the clear, small diameter tubing. A steady stream should flow from the braided tubing line. When air pressure is removed from the clear tubing the water stream should stop.

7. Once you have tested the valve, backfilled the hole and poured the concrete mounting pad you are ready to set the fountain. After bolting the fountain in place

8. These products are designed to operate on 20 PSI to 105 PSI supply line pressure. If inlet pressure above 105 PSI, a pressure regulator must be installed in the supply line. Any damage caused by reason of connecting this product to supply line pressure lower than 20 PSI or higher than 105 PSI is not covered by warranty.

INSTALLATION INSTRUCTIONS

IMPORTANT

ALL SERVICE TO BE PERFORMED BY AN AUTHORIZED SERVICE PERSON

IMPORTANT! INSTALLER PLEASE NOTE.

THE GROUNDING OF ELECTRICAL EQUIPMENT SUCH AS TELEPHONE, COMPUTERS, ETC. TO WATER LINES IS A COMMON PROCEDURE. THIS GROUNDING MAY BE IN THE BUILDING OR MAY OCCUR AWAY FROM THE BUILDING. THIS GROUNDING CAN CAUSE ELECTRICAL FEEDBACK INTO A FOUNTAIN, CREATING AN ELECTROLYSIS WHICH CAUSES A METALLIC TASTE OR AN INCREASE IN THE METAL CONTENT OF THE WATER. THIS CONDITION IS AVOIDABLE BY USING THE PROPER MATERIALS AS INDICATED. ANY DRAIN FITTINGS PROVIDED BY THE INSTALLER SHOULD BE MADE OF PLASTIC TO ELECTRICALLY ISOLATE THE

FOUNTAIN FROM THE BUILDING PLUMBING SYSTEM.

1000003949 (Rev. B - 03/20)

DRAIN LINE BY INSTALLER

( AS REQUIRED BY LOCAL CODES )

WATER INLET LINE

( BY INSTALLER )

CONCRETE SLAB

MIN. 8 INCH INSIDE DIA.

PVC PIPE, TRIM TO

DESIRED LENGTH

(SUPPLIED BY INSTALLER)

MIN. 8 INCH INSIDE DIA.

PVC PIPE, TRIM TO

DESIRED LENGTH

(SUPPLIED BY INSTALLER)

PVC 8" x 8" x 4" COMBINATION

"Y" & 1/8 BEND REDUCING ASSY.

(SUPPLIED BY INSTALLER)

4" PVC PIPE

(SUPPLIED BY INSTALLER)

4" 102mm

4" PVC 1/4 BEND

(SUPPLIED BY INSTALLER)

36" MIN. (914mm) 60"MAX. (1524mm)

FROST LINE

1-1/2" DRAIN TUBE

(SUPPLIED BY INSTALLER)

CLEANOUT PLUG FOR ACCESS

(SUPPLIED BY INSTALLER)

SUGGESTED SITE PREPARATION DETAIL FOR THE SANITARYFR3 VALVE

FIG. 1

1000003949 (Rev. B - 03/20)

4" 102mm

B

( 4 ) 1/2" ( 13mm ) DIA. HOLES

SPACED AS SHOWN ON A

12" ( 305mm ) BOLT CENTER (2 PL)

WATER INLET LINE

( BY INSTALLER )

VALVE WATER LINE SUPPLIED

WITH A 1/4 x 1/2 NPT CONNECTOR

DRAIN LINE BY INSTALLER

( AS REQUIRED BY LOCAL CODES )

A

SEE DETAIL A

36" MIN. 914mm 60" MAX. 1524mm

FROST LINE

27 1/8" 689mm

8" 203mm

O 14" 356mm

(2 PL)

29" 737mm

22" 559mm

34 9/16" 878mm

19" 483mm

44 1/16" 1119mm

14 9/16" 371mm

64 1/16" 1627mm

10" 254mmO

FIG. 2

SUGGESTED SITE PREPARATION DETAIL FOR THE

4420DBBFF1UFR FTN. WHEN USING THE SANITARYFR3 VALVE

LEGEND

A = ACCESS PANEL ( 8" X 10" )

B = REMOVABLE BOTTOM COVER

1-1/2 DRAIN TUBE

SUPPLIED WITH FTN.

AIR GAP ASSY.

SUPPLIED WITH VALVE

1-1/2 DRAIN TUBE

SUPPLIED BY INSTALLER

Detail A

Highlight

1000003949 (Rev. B - 03/20)

SUGGESTED SITE PREPARATION DETAIL FOR THE

4420DBBFF1LFR FTN. WHEN USING THE SANITARYFR3 VALVE

FIG. 3

4" 102mm

B

( 4 ) 1/2" ( 13mm ) DIA. HOLES

SPACED AS SHOWN ON A

12" ( 305mm ) BOLT CENTER (2 PL)

WATER INLET LINE

( BY INSTALLER )

VALVE WATER LINE SUPPLIED

WITH A 1/4 x 1/2 NPT CONNECTOR

DRAIN LINE BY INSTALLER

( AS REQUIRED BY LOCAL CODES )

A

SEE DETAIL A

(ON PAGE 4)

36" MIN. 914mm 60" MAX. 1524mm

FROST LINE

8" 203mm

29" 737mm

22" 559mm

O 14" 356mm

(2 PL)

27 1/8" 689mm

37 3/16" 945mm

14 9/16" 371mm

3" 76mm

10" 254mmO

41 7/16" 1053mm

57 3/16" 1453mm

19" 483mmX

1000003949 (Rev. B - 03/20)

G J

H

F E

D

C

A

B

K

L

INSTRUCTIONS FOR CONNECTING TUBES FROM VALVE TO FOUNTAIN(S)

Step 1 - Insert the 1/8” O.D. tube(s) (Labeled A, B & J) into the connector(s) (provided with fountain). Insert the 1/8” O.D. tube(s) coming from the fountain(s) push button actuator(s) into the connector(s). Trim any excess length.

Step 2 - Secure the 1/8” O.D. tube(s) (Labeled C, D & K) to the waste line assembly. This line is a vent line and should be open to the air.

Step 3 - Insert the 1/4” O.D. tube(s) (Labeled E, F & L) into the 1/4” union(s) (provided with valve assembly). Insert the 1/4” O.D. water lines coming from the fountain(s) into union(s). Trim any excess length.

Step 4 - Insert the 1/4” O.D. tube (Labeled G) into the air gap assembly.

Step 5 - Secure the 1/4” O.D. tube (Labeled H) to the waste line assembly. This line is a vent line and should be open to the air.

LABEL A

(ON/OFF CONTROL LINE

FOR BUBBLER ONE)

LABEL F (WATER LINE)

LABEL G (DRAIN LINE)

LABEL E (WATER LINE)

LABEL B

(ON/OFF CONTROL LINE

FOR BUBBLER TWO)

LABEL C (VENT LINE)

LABEL H (VENT LINE)

LABEL D (VENT LINE)

FOUNTAIN CONNECTIONS

FIG. 4

FOUNTAIN CONNECTIONS

PLUMBING CONDUIT

(BY INSTALLER)

TO VALVE

LABEL L (Water Line)

LABEL K (VENT LINE) LABEL J

(ON/OFF CONTROL LINE

FOR BUBBLER THREE)

1000003949 (Rev. B - 03/20)

DETAIL B

SEE DETAIL B

Stream Height Adjustment

FIG. 5

5,13

1000003949 (Rev. B - 03/20)

FIG. 7

DESCRIPTION

110175443890 1000003964

40045C 1000003963

50986C 56082C 56092C 56123C 56185C 75653C

1000003970 56218C 98678C 70817C 70828C 75639C 75652C 70683C

NS

PART NO.

Hex Nut - 3/8-16 Bracket - Regulator Mtg (Serv) Hex Nut - 1-5/16 Triple Valve Regulator Holder Regulator Nut Poly Tubing - 1/4” (Cut To Length) Poly Tubing - 1/8” (Cut To Length) Canister Nylon Strap - 6 ft.

Kit - Air Gap Assy.

Fitting - 1/2” Union w/Strainer Kit - 1.0 GPM Regulator Fitting - Elbow 1/4 Stem x 1/4 Tube Fitting - Connector 1/4 x 1/4 NPTF Fitting - Elbow 1/4 x 1/4 NPTF U-Bolt Fitting - Union 1/4

ITEM NO.

PARTS LIST

The Following Items are included with the SanitaryFR3 Valve

NS = Not Shown

FIG. 6

1000003949 (Rev. B - 03/20)

1. This fountain is to be mounted on a smooth, flat, finished surface with adequate support structure. NOTE: Mounting structure must be capable of supporting 300 lb. load on fountain.

2. Refer to rough-in for plumbing.

3. Install shut-off valve on water supply. (Valve not furnished)

4. Locate and install fountain using 3/8" minimum fasteners. (Fasteners not furnished)

5. Prior to installing the bottle filler to the center mounting position of fountain, install the drain pipe (Item #40) by positioning the short end of drain pipe through mounting plate of bottle filler. Next, place the aesthetic collar (Item # 46) onto the center mounting position of the fountain ensuring the vertical edge of the collar is upright and the curved edge sits below the mount ing surface. Mount bottle filler to fountain with collar centered between the two pieces. Secure with supplied hardware.

6. Prior to installing the bottle filler to the arm mount of fountain, insert the drain pipe (Item #44) into the arm tunnel and adjust drain to lean to the left side of arm when facing button. place the aesthetic collar (Item # 46) onto the arm mounting position of the fountain ensuring the vertical edge of the collar is upright and the curved edge sits below the mounting surface.

Mount bottle filler to arm with collar centered between the two pieces Install bottle filler to arm being sure drain tube is above mounting plate of filler. Install filler onto fountain and secure with supplied mounting hardware.

7. Connect water supply and fountain drain. Connect drain waste "Tee" to fountain drain tubes. Connect outlet of "Tee" to drainage system. Connect fountain water line to freeze valve supply line as specified in above sections. Water connection and drain must comply with local codes.

8. Turn on water supply and check all connections for leaks.

INSTALLATION INSTRUCTIONS

IMPORTANT

ALL SERVICE TO BE PERFORMED BY AN AUTHORIZED SERVICE PERSON

IMPORTANT! INSTALLER PLEASE NOTE.

THE GROUNDING OF ELECTRICAL EQUIPMENT SUCH AS TELEPHONE, COMPUTERS, ETC. TO WATER LINES IS A COMMON PROCEDURE. THIS GROUNDING MAY BE IN THE BUILDING OR MAY OCCUR AWAY FROM THE BUILDING. THIS GROUNDING CAN CAUSE ELECTRICAL FEEDBACK INTO A FOUNTAIN, CREATING AN ELECTROLYSIS WHICH CAUSES A METALLIC TASTE OR AN INCREASE IN THE METAL CONTENT OF THE WATER. THIS CONDITION IS AVOIDABLE BY USING THE PROPER MATERIALS AS INDICATED. ANY DRAIN FITTINGS PROVIDED BY THE INSTALLER SHOULD BE MADE OF PLASTIC TO ELECTRICALLY ISOLATE THE

FOUNTAIN FROM THE BUILDING PLUMBING SYSTEM.

X X X X X X X

Cross-Out

1000003949 (Rev. B - 03/20)

REV. DESCRIPTION

MATERIAL:

SCALE: CH. BY: APPROVED BY:

DR. BY:

REL. ECN:

DATE:

B

6400 PENN AVENUE SAVANNA, ILLINOIS 61074

MANUFACTURING CO.TOLERANCES UNLESS OTHERWISE SPECIFIED:

This Print is the Property of ELKAY MANUFACTURING CO. and is loaned subject to return upon demand and upon the express condition that it is not to be used directly or indirectly without our permission for purposes other than those for which it was furnished.

2 PLACE DECIMAL ± .03 1 PLACE METRIC ± .8 MM

3 PLACE DECIMAL ± .005 2 PLACE METRIC ± .1 MM

ANGLES ±.50° FOR REVISIONS

SEE SHEET 1 OF 10

SHEET 5 OF 10

SEE SHEET 1 OF 10

4420BFDB TUBULAR BI-LEVEL FOUNTAIN

1 : 8 CGK

CGK

D

426261

6 SEE NOTE 13

78SEE NOTE 11

16 59

52 OR

3SEE NOTE 5

32 45

33 45

29 22

52 OR

202928

8SEE NOTE 13

NCR-02488

RDZ

5/1/17

ASY99052C

39, 2043

ARM ONLY 44

FIG. 7

Included with Sanitary Valve

24, 29

30, 30a, 30b

28 19

1000003949 (Rev. B - 03/20)

The following items are included with the 4420DBBFFR Fountain

28467C 45724C 75724C 45476C

0000000325 45726C 98685C

0000000466 101570540560

97446C 66346C 97247C 28703C

28703C-LK

28091C-HT

98683C 98684C 40551C 98901C

1000003812* 1000003813* 1000003814*

45931C 98685C 66815C 98679C 98681C

1000003692 1000003693

98686C 66816C 98680C

1000005456 75565C 56092C 56123C

30a 30b

NS

NS

NS

ITEM

NO.

PART NO.

PARTS LIST

DESCRIPTION

PRINTED IN U.S.A.

Halsey Taylor – halseytaylor.com Elkay – elkay.com

FOR PARTS CONTACT YOUR LOCAL DISTRIBUTOR OR CALL TECHNICAL SERVICES AT 1.800.834.4816

1333, BUTTERFIELD ROAD, DOWNERS GROVE, ILLINOIS 60515

*select color option to complete part number *FINISH COLOR OPTIONS – Choose color option to complete your model number, add as suffix example:

4420DBBFFRKEVG

Matte finish: Evergreen = EVG Gloss finish:

Vandal-Resistant Bubbler Detail

FIG. 8

BASIN

TROUBLESHOOTING AND MAINTENANCE

Troubleshooting Insufficient Bubbler Flow: Check that the shut-off valve is wide open. Verify minimum 20 PSI supply pressure. Clean inlet strainer screen located in the valve body. Clean rubber orifice in flow control located below frost line in bushing between barb fitting and valve.

No Flow: Check for leaks in the air tubing going from the push button to the valve. Make sure the air tubing compression nut is hand tight. Disconnect air tube from push button. Place finger over air outlet. Push button to test diaphragm. Tighten diaphragm cap screws. Replace diaphragm if necessary.

Continued Insufficient or Varied Height of Bubbler Flow:

Continuous Bubbler Flow: Insure that push button is not obstructed and springs back to normal position. Remove four screws which secure plastic diaphragm block to valve body. Pull plastic and rubber diaphragm assembly out of valve body. Locate tiny hole in rubber diaphragm just under lip of plastic part. Clean debris from this hole. Inspect valve seat for grooves. If valve seat was OK and diaphragm hole was free from debris, inspect rubber button located at center of floating steel disc in valve diaphragm block assembly. If button is worn, turn disc over or replace it. If diaphragm and seats are in good condition, stretch spring slightly. Spring is located behind floating stainless steel plate. Insure that air bleed port on valve plastic block assembly is not plugged.

NS = Not Shown

Basin Tailpipe - 10" Lg.

Pinned Torx Screw - 1/4-20 x 3/4" Tube - Drain Kit - Drain Plug/Gasket Plug - Drain (Dog Bowl) Kit - Hardware/Bolts/Nuts/Washers/Torx Screws Kit - Bubbler (Dog Bowl) Gasket Kit - VR Bubbler Tube - Drain Kit - VR Torx Screws/Bit Blank Nameplate Insert (only) LK4420BFFR Nameplate Insert (only) 4420BFFR Nameplate Insert (only) Kit - Plastic Drain Kit - 90° Plastic Drain Tailpipe - 1-1/4" X 6-7/8" Kit - FR Push Button/Sleeve/Nuts Panel - Access Cover - Bottom Cover - Round Plate (BF) Plug - Outdoor Bottle Filler Drain Kit - Hardware/Bolts/Nuts/Washers/Torx Screws Tube - Drain Kit - Nozzle/Aerator Kit - Blank Bottle Filler Trim Kit - LK4420DBBFFR Bottle Filler Trim Kit - 4420DBBFFR Bottle Filler Trim Kit - Bottle Filler Waterway Tube - Drain (Arm only) Kit - Aerator/Key Aesthetic Collar Fitting - Double Male Connector Poly Tubing - 1/4" (Cut To Length) - To Bubbler Poly Tubing - 1/8" (Cut To Length) - To Actuator

SPECIFICATIONS

Outdoor ezH2O® Upper Bottle Filling Station Bi-Level Pedestal with Pet Station Non-Filtered Non-Refrigerated Freeze Resistant

Model LK4420BF1UDBFRK

In keeping with our policy of continuing product improvement, Elkay reserves the right to change product specifications without notice. Please visit elkay.com for the most current version of Elkay product specification sheets. This specification describes an Elkay product with design, quality, and functional benefits to the user.

When making a comparison of other producers’ offerings, be certain these features are not overlooked.

Elkay REV 02252026 1-800-260-6640 | SVtechservice@Elkay.com © 2026 Page 1 LK4420BF1UDBFRK Patent zurn-elkay.com/patents LK4420BF1UDBFRK_spec.pdf

PRODUCT SPECIFICATIONS

Outdoor ezH2O® Upper Bottle Filling Station Bi-Level Pedestal with Pet Station Non-Filtered Non-Refrigerated Freeze Resistant. Features shall include Heavy Duty Vandal Resistant, Laminar Flow, Pet Fountain, Sealed Freeze Resistant, 300 Series Stainless. Furnished with Vandal Resistant bubbler. Mechanical Button activation. Product shall be Floor Mount/Freestanding, for Outdoor applications, serving 2 station(s).

Special Features: Heavy Duty Vandal Resistant, Laminar Flow, Pet Fountain, Sealed Freeze Resistant, 300 Series Stainless

Finish: Black (BK), Blue (BLU), Evergreen (EVG), Gray (GRY)

Power: No Electrical Required

Bubbler Style: Vandal Resistant

Activation by: Mechanical Button

Mounting Type: Floor Mount/Freestanding

Chilling Capacity: Non-refrigerated

Dimensions (L x W x H): 26" x 31" x 64"

Approx. Shipping Weight: 224 lbs.

Installation Location++: Outdoor

No. of Stations Served: 2 ++When used in non-temperature controlled environments, unit(s) must be adequately winterized and/or protected from extreme heat to prevent damage where climates dictate.

Special Note: To meet the full requirements for ADA please choose LK4430BF1L for adult installations and LK4430BF1M for child ADA. Bottle Filler Stations 1 (Upper), Bubbler Stations 1 (Low), Choose from 4 color options

• Mechanically-Activated unit continues to supply water in event of service disruptions.

• Laminar flow provides clean fill with minimal splash.

• Pet Fountain: Features slow drainage for easy drinking.

• Sealed Freeze Resistant Valve System: Fully sealed freeze resistant system that minimizes chance of ground water contamination, and prevents drain water from mixing with fresh water. Designed for ground installation below the frost line.

Included with Product: Outdoor Bottle Filler, Freeze Resistant Valve Ships in multiple boxes.

A Century of Tradition and Quality.

For more than 100 years, Elkay has been making innovative products and providing exceptional customer care. We take pride in offering plumbing products that make life easier, inspire change and leave the world a better place.

PRODUCT COMPLIANCE

ADA & ICC A117.1

ASME A112.19.3/CSA B45.4

GreenSpec®

NSF/ANSI 61 (Q≤1) & 372 (lead free)

Complies with ADA & ICC A117.1 accessibility requirements when installed according to the requirements outlined in these standards. Installation may require additional components and/or construction features to be fully compliant. Consult the local Authority Having Jurisdiction if necessary.

Installation Instructions (PDF) - 1000003949

Warranty pertains to drinking water applications only. Non-drinking water applications are not covered under warranty.

Warranty (PDF)

PART:________________________________QTY: _____________

PROJECT:______________________________________________

CONTACT:______________________________________________

DATE:__________________________________________________

NOTES:_________________________________________________

APPROVAL:_____________________________________________

mailto:SVtechservice@Elkay.com http://www.elkay.com/products/details/lk4420bf1udbfrk http://www.elkay.com/products/details/lk4420bf1udbfrk https://www.zurn.com/patents http://www.elkayfiles.com/care-cleaning-install-warranty-sheets/1000003949.pdf http://www.elkayfiles.com/care-cleaning-install-warranty-sheets/96993c.pdf

SPECIFICATIONS

Outdoor ezH2O® Upper Bottle Filling Station Bi-Level Pedestal with Pet Station Non-Filtered Non-Refrigerated Freeze Resistant

Model LK4420BF1UDBFRK

In keeping with our policy of continuing product improvement, Elkay reserves the right to change product specifications without notice. Please visit elkay.com for the most current version of Elkay product specification sheets. This specification describes an Elkay product with design, quality, and functional benefits to the user.

When making a comparison of other producers’ offerings, be certain these features are not overlooked.

Elkay REV 02252026 1-800-260-6640 | SVtechservice@Elkay.com © 2026 Page 2 LK4420BF1UDBFRK Patent zurn-elkay.com/patents LK4420BF1UDBFRK_spec.pdf mailto:SVtechservice@Elkay.com http://www.elkay.com/products/details/lk4420bf1udbfrk http://www.elkay.com/products/details/lk4420bf1udbfrk https://www.zurn.com/patents