Specifications

Dimensions-Weights Materials
Typical Installations
Pressure/Temperature
Maximum steam working pressure: 15 psi (1.03 bars)
Maximum temperature: 250°F (121°C)
ES-N36 0019-1 © Watts, 1997
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
Water Safety & Flow Control Products
Body - Brass
Components
Cover - Polypropylene
Disc - Silicone
O-ring - Buna-N
Spring - 302
Stainless Steel
Float - Glass Filled
Polysulfone
SIZE (DN) DIMENSIONS WEIGHT
A B
in. mm in. mm in. mm oz. gr.
1
⁄2 15 2 50 2 50 4 113
3
⁄4 20 2 50 2 50 4 113
Capacity
SIZE (DN) VENTING CAPACITY
in. mm MODEL CFM LPM
1
⁄2 15 N36-M1 15 425
3
⁄4 20 N36-M1 15 425
B
A
Water Service Steam Service
T&P
Relief
Valve
Hot
Tank
Cold
Figure 2
Domestic Hot Water Supply Tanks
and Heaters with Bottom Feed
N36-M1
T&P Relief
Valve
Cold
▼
Figure 3 -
Table Top Heaters
N36-M1
N36-M1
N36-M1
N36-M1
Pigtail*
Jacketed
Kettle
Trap
Trap
Steam
Steam
Trap
Pigtail* not
needed for
pressure
under 5 lbs.
Temperature
Regulator
Alternate
Installation
Steam Trap
T&P Relief
Valve
Heating Coil
Figure 5
Jacketed Kettles
Figure 6
Unit Heaters
Figure 7
Steam Coil Heaters
Figure 4
Low Pressure Steam Heating Systems
N36-M1
Zone
Control
Valves
Air Vents
No. N36 should
be installed on
supply main on
system side of
control zone valve
*Note: When used for steam service, be sure to use pigtail to prevent live steam from damaging N36 valve.
Pigtail*
Pigtail*
Spec Seq#: 40
W34N36