Buying Guide
SIMPLIFIES SERVICE
FULL RANGE OF SERVICE VALVES STYLES
TANKLESS WATER
HEATER
COLD
INLET
RECIRCUALTION
INLET
HOT
OUTLET
IDEAL FOR INTEGRATED RECIRCULATION PORT CONNECTIONS
SEE PAGE 29
10
THE ONLY WAY TO INSTALL
ANY TANKLESS
WATER HEATER
PATENTED TECHNOLOGY
• Quicker, consistent quality installations
• Fewer leak paths
• Allows for one person diagnostic testing
• Full range of service valves styles,
installation kits, and accessories
• Also for use with wall hung and
combi boilers - see page 19
• EXP Complete kits include your choice
of TWH service valves with pressure
relief valve, integrated gas sediment
trap, gas ball valve, and gas ex line
PRESSURE RELIEF
VALVE OPTIONS
RESIDENTIAL PRV
150 PSI/500,000 BTU/HR
PR Kits: Standard Brass
PR-LF Kits: Lead-Free Brass
BOILER PRV
30 PSI/510,000 BTU/HR for
Boiler/Hydronic Applications
(see page 19)
COMMERCIAL PRV
150 PSI/2.7M BTU/HR
w/ Close Nipple
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.
WWW.WEBSTONEVALVES.COM
WARNING: Cancer and Reproductive
Harm - www.P65Warnings.ca.gov
LEAD-FREE: Weighted
average lead content ≤ 0.25%