
For Residential, Commercial and Industrial Applications
ES-LFBRV
Job Name 
Job Location 
Engineer 
Approval 
LEAD FREE
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*
Series LFBRV
Combination Ball Valve  
and Relief Valve
Sizes: 3⁄4" – 1" (20 - 25 mm)
Series LFBRV, Combination Ball Valve and Relief Valve is an easy 
to install two-in-one device. Designed to be used as water heater 
shutoff valves to provide both a means to shut off the water supply 
to the water heater and to provide protection against excess water 
pressure caused by thermal expansion.The Series LFBRV features 
Lead Free* construction to comply with Lead Free* installation 
requirements.
These valves use a Lead Free* copper silicon alloy body full port 
valve design** which includes PTFE seats and a blow out proof 
stem design. The relief valve section includes a Viton 
stainless steel spring. It is provided with a compression or PEX end 
fitting to provide a secure method of connecting a discharge line.
Features 
• Easy Installation - Installs in any position 
• Low profile design 
• Full port ball valve with virgin PTFE seats 
• Blowout proof stem 
• Secure drain tube connection available with PEX, Barb 
or compression fitting models
Specifications
Valve shall include built-in relief protection from water pressure 
in excess of 75, 80, 100, or 125psi. Each valve shall be full port 
construction**, Lead Free* copper silicon alloy body, blowout proof 
316 stainless steel stem, virgin PTFE seats, PTFE stem packing 
and stem thrust bearing, Viton 
relief spring. Lead Free* combination ball valve and relief valve 
shall be constructed using Lead Free* materials. Lead Free* valves 
shall comply with state codes and standards, where applicable, 
requiring reduced lead content. Valves shall include brass 
compression nut and ferrule or PEX end connection for a drain line. 
Valve shall be IAPMO listed. Valve shall be a Watts Series LFBRV.
** PEX end connections reduce full port to reduced 
port dimensions.
Viton® is a registered trademark of DuPont Dow Elastomers.
®
 relief ball and 302 stainless steel 
®
 ball and 
  Contractor 
  Approval 
  Contractor’s P.O. No. 
  Representative 
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LFBRVT
THD x THD 
x Compression
LFBRVPxTxP
PEX x THD x PEX
Available Models
 INLET  OUTLET  RELIEF OUTLET
 Sweat  Sweat  PEX 
 Sweat  Sweat  Compression 
 Thread  Thread   Compression 
 PEX  PEX  Compression 
 PEX  PEX  PEX
NOTICE
For Sweat Connections Only:
This valve is designed to be soft soldered into lines without disassembly, using a low temperature solder 420°F (216°C). Other 
solders such as 95/5 tin antimony 460°F (238°C) or 96/4 tin silver 
430°F (221°C) can be used. However, extreme caution must be 
used to prevent seat damage. Higher temperature solders will 
damage the seat material. ANSI B16.18 states that the maximum 
operating pressure of 50-50 solder connections is 200psi (14 bar) at 
100°F (38°C) and decreases with higher temperatures.
Apply heat with the flame directed AWAY from the center of the 
valve body. Excessive heat can harm the seats. After soldering, the 
packing nut may have to be tightened.
LFBRVP
PEX x PEX 
x Compression
LFBRV 
S x S x BARB
*The wetted surface of this product contacted by consumable 
water contains less than 0.25% of lead by weight.
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements, 
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.

Installation
Ball 
Valve
Relief 
Valve
Watts Vacuum 
Relief Valve
Hot to 
system
Watts T&P 
Relief Valve
Drain Tube
Watts Test Plug 
and Gauge
Watts Backflow 
Preventer
Watts Shutoff
Water Meter
Cold
Watts Water Pressure Reducing 
Valve
Temperature — Pressure Rating
Maximum Temperature: 100°F (32°C)
Maximum Pressure: Valve body rated to 400psi (28 bar) 
Watts 
Tempering 
Valve
Watts 
Water 
Heater 
Straps
Watts Water 
Heater Stand
Relief Valve
A
B
C
C
D
C
Standards
Listed by IAPMO
Material of Construction
Handle Nut - Zinc plated carbon steel 
Handle - Zinc plated carbon steel with vinyl insulator 
Packing Nut - Brass 
Stem Packing - PTFE 
Thrust Washer - PTFE 
Stem - Stainless steel 
Body - Lead Free copper silicon alloy 
Seats - Virgin PTFE 
Ball - Stainless steel 
Adapter - Lead Free copper silicon alloy 
Ball - Viton 
Spring - 302 stainless steel 
Spring Cage - Brass 
Ferrule - Brass 
Nut - Brass
®
E
COMPRESSION: PEX: 
A. Ball  A. Ball 
B. Spring  B. Spring 
C. Spring Cage  C. Spring Cage 
D. Ferrule
E. Nut
2

Dimensions — Weights
PEX x PEX
C
D
E
F
B
A
SWEAT x SWEAT
THREAD X THREAD
C
B
SWEAT x PEX
C
B
A
D
E
F
D
E
F
A
MODEL  INLET/OUTLET  SIZE (DN)  DIMENSIONS  WEIGHT
   A B C D E F
    in. mm in. mm in. mm in. mm in. mm in. mm in. mm lbs. kgs.
LFBRVT  THD x THD    3⁄4     20  215⁄16 75 13⁄8 36 19⁄16 40 33⁄4 95 115⁄16 49 115⁄16 49 1.00 .45 
LFBRVP  PEX x PEX     
LFBRVSxP  SWT x PEX    
Standard relief drain connection is a 
3
⁄4    20  35⁄8  93 111⁄16 43 19⁄16 40 33⁄4 95 115⁄16 49 115⁄16 49 1.20 .54
3
⁄4    20 33⁄8 86 13⁄8 36 19⁄16 40 33⁄4 95 115⁄16 49 115⁄16 49 1.20 .54
3
⁄8” Compression Fitting, add P for 1⁄2” PEX
Outlet Options
NPT 
T
MAKEUP 
LENGTH
P
PEX 
INSERT 
LENGTH
PEX 
DRAIN 
INSERT 
LENGTH
  SIZE   DIMENSIONS
  P R S T Z
 in. mm in. mm in. mm in. mm in. mm in. mm
 3⁄4 20 13⁄16 21 5⁄8 16 3⁄4 19 9⁄16 14 27⁄32 21
13
R
 1 25 
⁄16 21 5⁄8 16 7⁄8 23 11⁄16 17 27⁄32 21
S
SWEAT 
INSERT 
LENGTH
3

For additional information, visit our web site at: www.watts.com
A Watts Water Technologies Company
USA: Tel: (978) 688-1811 • Fax: (978) 794-1848 • www.watts.com
Canada: Tel: (905) 332-4090 • Fax: (905) 332-7068 • www.watts.ca 
ES-LFBRV 1337    © 2013 Watts