Webstone Brochure

The Isolator EXP is a registered trademark of Webstone © 2016 Webstone, a brand of NIBCO
FORM #: EXP0716
ONE APPIAN WAY WORCESTER, MA 01610
P.O. BOX 59 WORCESTER, MA 01613
P: [phone] • F: [phone]
www.webstonevalves.com
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.
RELOCATION ADAPTER KITS
Relocates direction of the pressure relief valve in recessed boxes, tight or unique installations
AVAILABLE W/
STANDARD BRASS LEAD-FREE BRASS
Cer t if ied to
NSF/ANSI 61-G & 372
SIZE ITEM # ITEM # CTN/CASE
FITS E-X-P
™
3/4" 28003 - 1/100
FITS E-X-P E2
™
3/4" - 28023W 10/100
PRESSURE RELIEF VALVES
AVAILABLE W/
STANDARD BRASS LEAD-FREE BRASS
Cer tified to AB 1953(CA)
S.152 (VT) 372 (MD)
SIZE ITEM # ITEM # CTN/CASE
RESIDENTIAL PRESSURE RELIEF VALVE
150 PSI/200,000 BTU 3/4" 20713 20713W 1/100
30 PSI/510,000 BTU 3/4" 20733 - 1/100
COMMERCIAL PRESSURE RELIEF VALVE (REQUIRES CLOSE NIPPLE # 29003)
150 PSI/2.7 MILLION BTU 3/4" 20723 - 1/24
CLOSE NIPPLE 3/4" 29003 29003W 1/100
• PR3 Kits
A
include a 30 PSI/510,000
BTU Pressure Relief Valve suitable
for boiler heat connections
• Available adjustable pressure
relief valve outlet provides greater
flexibility in tight quarters
• Hi-flow hose drains streamline
system service
• Pair with
B
E2 or E3 Tankless
Water Heater Kit, which includes
a 150 PSI Pressure Relief Valve
suitable for combi boiler domestic
hot water connections
WALL HUNG &
COMBI BOILER
INSTALLATIONS
ISOLATOR
®
E-X-P
™
ACCESSORIES
CERTIFICATIONS DO NOT APPLY TO 29003 & 29003W
WALL HUNG & COMBI BOILER SERVICE VALVE KITS
Hot & Cold Set of Full Port Forged Brass Ball Valves w/ Hi-Flow Hose Drains, 500 WOG
Pressure Relief Valve Outlet & Adjustable Packing Glands PATENTED TECHNOLOGY
Includes Residential Pressure Relief Valve (30 PSI/510,000 BTU)
AVAILABLE W/
STANDARD BRASS LEAD-FREE BRASS
Cer t if ied to
NSF/ANSI 61-G & 372
SIZE ITEM # ITEM # CTN/CASE
IPS UNION × IPS 3/4" - 44443WPR3 1/10
IPS UNION × IPS 1" 44444PR3 44444WPR3 1/10
IPS UNION × SWT 3/4" - 54443WPR3 1/10
IPS UNION × SWT 1" 54444PR3 54444WPR3 1/10
IPS UNION × PRESS 3/4" - 84443WPR3 1/10
IPS UNION × PRESS 1" - 84444WPR3 1/10
INCLUDES ADJUSTABLE PRESSURE PRESSURE RELIEF VALVE OUTLET
IPS UNION × IPS
3/4" - 45443WPR3 1/10
IPS UNION × SWT 3/4" - 55443WPR3 1/10
A
B
A