Overview of Primary Product

Page 2 of 2
WILKINS a Zurn company, 1747 Commerce Way, Paso Robles, CA 93446 Phone:[phone] Fax:[phone]
IN CANADA: ZURN INDUSTRIES LIMITED, 3544 Nashua Dr., Mississauga, Ontario L4V 1L2 Phone:[phone] Fax:[phone]
Product Support Help Line: 877-BACKFLOW (877-222-5356) • Website: http://www.zurn.com
MODEL 375XL 1-1/4" - 2" (STANDARD & METRIC)
5
10
15
20
0 50 100 150 200 250
FLOW RATES (GPM)
PRESSURE LOSS
(PSIG)
34
69
103
138
0.0 3.2 6.3 9.5 12.6 15.8
FLOW RATES (l/s)
PRESSURE LOSS
(kpa)
MODEL 375XL 1/2" - 1" (STANDARD & METRIC)
0
10
20
30
0 20 40 60 80
FLOW RATES (GPM)
PRESSURE LOSS
(PSIG)
0
69
138
207
0.0 1.3 2.5 3.8 5.0
FLOW RATES (l/s)
PRESSURE LOSS
(kpa)
TYPICAL INSTALLATION
Local codes shall govern installation requirements. To be
installed in accordance with the manufacturers’ instructions
and the latest edition of the Uniform Plumbing Code. Unless
otherwise specied, the assembly shall be mounted at a
minimum of 12” (305mm) and a maximum of 30” (762mm)
above adequate drains with sufcient side clearance for
testing and maintenance. The installation shall be made
so that no part of the unit can be submerged.
OUTDOOR INSTALLATION
INDOOR INSTALLATION
SPECIFICATIONS
The Reduced Pressure Principle Backow Preventer shall be ANSI 3
rd
party certied to comply with states' lead
plumbing law 0.25% maximum weighted average lead content requirement, shall be ASSE® Listed 1013, rated
to 180°F, and supplied with full port ball valves. The main body shall be Nylon and the seat disc elastomers shall
be silicone. If installed indoors, the installation shall be supplied with an air gap adapter. The Reduced Pressure
Principle Backow Preventer shall be a WILKINS Model 375XL.
INLET SHUT OFF
DIRECTION OF FLOW
30" MAX.
12" MIN.
PROTECTIVE
ENCLOSURE
AIR GAP
OPTIONAL
WATER METER
175 PSIG 180ß F
3/4" 375 RP
ZURN
WILKINS
FLOOR
DRAIN
MODEL 375XLSAG
(SHOWN)
OPTIONAL
LEAD-FREE STRAINER
MODEL SXL
WILKINS
XL
Capacity thru Schedule 40 Pipe
Pipe size 5 ft/sec 7.5 ft/sec 10 ft/sec 15 ft/sec
3/8" 3 4 6 9
1/2" 5 7 9 14
3/4" 8 12 17 25
1" 13 20 27 40
1 1/4" 23 35 47 70
1 1/2" 32 48 63 95
2" 52 78 105 167
 Rated Flow (Established by approval agencies)
30" MAX.
12" MIN.
FLOOR DRAIN
175 PSIG 180° F
ZURN
/ WILKINS
375 RP
B64.4
1013
DIRECTION OF FLOW
2
(1/2” - 1”) 5 1/2
(1-1/4” - 2”) 8 1/8
(1/2” - 1”) 2” PIPE
(1-1/4” - 2”) 3” PIPE
(DRAIN LINE CAN
BE ANY STANDARD
PIPING MATERIAL)
FLOW CHARACTERISTICS
2" (50mm)
1-1/4" (32mm)
1-1/2" (40mm)
1/2" (15mm)
1" (25mm)
3/4" (20mm)