Watts 415 User Manual
Series 415, Steam safety valves, Size
For Low Pressure Steam Boilers and Process Equipment
ES-415
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415
Series 415
Steam Safety Valves
Size:
3
⁄
4
" – 1
1
⁄
2
" (20 – 40mm)
Series 415 ASME rated Steam Safety Relief Valves provide high
quality dependable low cost protection for any low pressure steam
heating equipment operating up to 15psi. Available at lower settings,
such as 8psi for pressure cooker and steam cleaning equipment
requirements. Consult your local Watts agent for ratings at lower
pressure settings. Satin chrome finish also available, model SC.
Series 415 steam safety valves feature a stainless steel spring, a
top guided stem and non-stick Teflon
®
disc to metal seating to
assure positive shutoff.
Features
• High capacity
• Positive shut off
• Non-sticking Teflon
®
disc
• Seat located above drain
• NPT threaded male inlet x threaded female outlet
(drain) connection
Models
L – Low pressure setting
SC – Satin chrome finish
Specification
Steam Safety Relief Valve shall be installed on the boiler where
noted on the plans. Valve shall be manufactured out of bronze with
stainless steel spring, non-stick Teflon
®
disc, and metal seat. Valve
shall have a maximum operating pressure of 15psi. Valve shall be a
Watts Regulator Company Series 415.
Materials
Body:
3
⁄
4
" forged brass
1" - 1
1
⁄
2
" Bronze
Spring: Stainless steel
Disc: Non-stick Teflon
®
Seating: Metal
Pressure — Temperature
Capacity at 15psi is 450 lbs./hr. for the
3
⁄
4
" and 643 lbs./hr. for
the 1", 1230 lbs./hr. for the 1
1
⁄
4
", and 1860 lbs./hr. for the 1
1
⁄
2
".
Standard relief set pressure 15psi (103.4 kPa).
MODEL
SIZE (DN)
DIMENSIONS
WEIGHT
ASME STEAM
Discharge Capacity
B
D
E
in.
mm
lbs./hr. @ 15psi
in.
mm
in.
mm
in.
mm lbs.
kg.
415-M1
3
⁄
4
x
3
⁄
4
20 x 20
450
2
13
⁄
16
71
15
⁄
16
33 1
1
⁄
4
32 .70 .31
415-M1
1 x 1
25 x 25
643
3
1
⁄
8
78 1
11
⁄
16
43 1
5
⁄
8
41 .91 .41
415
1
1
⁄
4
x 1
1
⁄
2
32 x 40
1230
4
3
⁄
4
121 2
3
⁄
8
60 2
1
⁄
8
54 2.00 .91
415
1
1
⁄
2
x 2 40 x 50
1860
5
7
⁄
16
138 2
5
⁄
8
67 2
5
⁄
16
59 3.00 1.36
Teflon
®
is the registered trademark of E.I. DuPont De Nemours & Co., Inc.
E
D
B
Approvals
ASME
Dimensions — Weights
ES-415 0823
©Watts Regulator Company, 2008
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
W a t e r S a f e t y & F l o w C o n t r o l P r o d u c t s
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.
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