Series bp30, Model 3l, Model 53l – Watts 5300A User Manual
Page 2: Series 30, Asme rated, design certified and listed by c.s.a, Well system relief valve, 15mm)
Series BP30
Diaphragm Operated Relief Valve Bypass Control Valves
Diaphragm actuated bypass relief valves to regulate liquid pressure as supplied by a positive pres-
sure pump. Protects equipment by opening at desired setting and allowing excess volume to be by-
passed back to source. Construction is bronze body. Sensitive rubber diaphragm and special Teflon
disc. Tee handle facilitates pressure change. Spring and adjustment handle free from contact with
liquid elements being controlled. Max. temperature 180
°
F (82
°
C).
Pressure Ranges:
BP30A - Pressure range 10-50 psi (.7-3.45 bars)
BP30B - Pressure range 45-100 psi (3.10-6.90 bars)
BP30C - Pressure range 75-175 psi (5.17-12.06 bars)
ES-530C 0050
© Watts Regulator Co., 1996
Printed in U.S.A.
Model 3L
ASME Rated, Design Certified and Listed by C.S.A.
Used for protection against excessive pressure on domestic storage tanks or tankless water
heaters. Similar in construction to Watts Model 10L, the Model 3L has no temperature re-
lieving element. Pressure range 75-150 psi (5.17-10.34 bars). Standard setting 75, 100, 125
and 150 psi (5.17, 6.90, 8.61 and 10.34 bars). Size
3
⁄
4
" x
3
⁄
4
" (20mm x 20mm).
Popularly used in conjunction with the Model 210 gas shutoff valve on gas water heaters to
shut off gas to heater if water heater temperature exceeds 210
°
F (99
°
C).
Solar - For solar applications Model 3L, specify Z9 for stainless steel lever and pin for out-
side solar applications.
Model 3L - has ASME construction and is tested, listed and certified by the National Board
of Boiler and Pressure Vessel Inspectors.
Model 53L
Same basic design as Model 3L except it is furnished in
1
⁄
2
" (15mm) size and does not com-
ply with A.S.M.E. requirements.
• Bronze body and stainless steel spring.
NOTE: On all the above pressure relief valves, pressure setting should be not less than 25-
30 psi above the maximum service main pressure.
Size (DN)
Height
Width
Weight
Model
in
mm
in
mm
in
mm
lb.
gm.
Version
3L
3
⁄
4
20
3
1
⁄
2
89
1
3
⁄
4
44
5
⁄
8
284
M7
53L
1
⁄
2
15
3
1
⁄
2
89
1
7
⁄
8
48
1
⁄
2
227
M7
ANSI Z21.22 “Relief Valves for Hot Water Supply Systems.”
DESIGN CERTIFIED and listed by C.S.A.
*
3
⁄
4
" (20mm) size CSA and ASME
Model 3L
Model BP30
Model 5300A
Model 30L
Size (DN)
Height
Length
Weight
Model
in
mm
in
mm
in
mm
lb.
kg.
BP30
1
⁄
2
15
5
3
⁄
4
146
2
1
⁄
4
57
1
1
⁄
8
2.48
Model 5300A - Poppet type compact bypass relief valve. Size
1
⁄
2
"
(15mm). Pressure range 0-250 psi (0-17.23 bars).
Series 30
1
⁄
2
" (15mm)
Well System Relief Valve
Model 30L-Z1 - Well system relief valve. Capacity: 20 gpm at 10 psi over pressure (85 psi)
Model 30L - with test lever; not diaphragm activated, for pressure relief service only. Nominal size:
1
⁄
2
"
(15mm), NPT male inlet x female (drain) outlet. Standard pressure setting 75 psi (5.17 bars). Optional set-
tings 100, 125 and 150 psi (6.9, 8.6, 10.3 bars). These valves are not diaphragm actuated as needed for
certain applications like bypass control service. For adjustable non-lever diaphragm actuated relief or
control service, see BP30 Series.
Model N30 - Pressure range 5-25 psi (0.3-1.7 bars) and less lever.
Model N30L - Pressure range 30-50 psi (2.07-3.45 bars). Standard setting 30 or 45 psi (2.07 or 3.10 bars).
Size (DN)
Height
Width
Weight
Model
in
mm
in
mm
in
mm
lb.
gm.
30L
1
⁄
2
15
4
1
⁄
2
114
2
1
⁄
4
57
7
⁄
8
397
The Watts products shown below are small type relief valves. Construc-
tion of these products does not meet the (ANSI Z21.22) nationally.-
recognized applicable standard.
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.wattsreg.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscda.com