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The Isolator EXP is a registered trademark of Webstone © 2012 Webstone Company, Inc.
FORM #: EXP0912
ISOLATOR
®
E-X-P
™
ACCESSORIES
AVAILABLE TO MAKE YOUR JOB EASIER
ONE APPIAN WAY WORCESTER, MA 01610
P.O. BOX 59 WORCESTER, MA 01613
P: [phone] • F: [phone]
www.webstonevalves.com
RELOCATION ADAPTER KITS
Use this kit to relocate the direction of the pressure relief valve in recessed boxes, tight or unique installations
LEAD FREE ITEM#
FITS ITEM # CERTIFIED TO NSF/ANSI 61-G SIZE CTN/CASE W T/CASE
EXP 28003 - 3/4" 1/100 85
E2 28023 28023W 3/4" 1/100 55
1/2" UNION ADAPTER KITS
Use these kits to change the inlet connection of your service valves from ¾” to ½”
LEAD FREE ITEM#
FITS ITEM # CERTIFIED TO NSF/ANSI 61-G SIZE CTN/CASE W T/CASE
ALL MODELS 29032 29032W 3/4" × 1/2" BULK BULK
PRESSURE RELIEF VALVES
RESIDENTIAL PRESSURE RELIEF VALVES
LEAD FREE ITEM#
ITEM # CERTIFIED TO NSF/ANSI 61-G SIZE CTN/CASE WT/CASE
150 PSI/200,000 BTU 20713 20713W 3/4" 1/100 49
30 PSI/200,000 BTU 20733 - 3/4" 1/100 49
COMMERCIAL PRESSURE RELIEF VALVES (Requires close nipple # 29003)
150 PSI/2.7 MILLION BTU
20723 - 3/4" 1/24 31
CLOSE NIPPLE 29003 - 3/4" BULK BULK
NORMAL OPERATION CLEANING FLUSHING
Circulate 3–5 gallons
of  ushing/descaling
solution through the
Tankless Water Heater
for 20–45 minutes.
Run at least 20 gallons
of clean, fresh water
from the water supply out
of the hot valve drain.
ADVANTAGES
• Quicker, consistent quality installation
• Fewer leak paths
• Allows for easy cleaning or fl ushing of system
• Allows for one person diagnostic
testing of water heater unit
• GUARANTEED FOR LIFE
This content has been provided for the express purpose of demonstrating a product’s function in a system and should not
be used as a reference for designing or assembling any working installation. The user is solely responsible for ensuring
that all products are used and all systems are designed in accordance with all applicable federal, state and local codes.