Specification Sheet

Dimensions — Weights
Series 1L, 1XL, 10L and 100XL
Direct Side Tapping
For External Flue Heaters
Use extra length extension
thermostat to extend into water
storage tank.
For Internal Flue Heaters
Use short or standard length
thermostat. Vertical discharge
line must be installed with its
direction downward.
MODEL SIZE (DN) DIMENSIONS WEIGHT
A B D T
CSA
Temp. Steam
in. mm in. mm in. mm in. mm in. mm oz. gm. Rating BTU/hr.
1L2 M7
1
⁄2 15 1
3
⁄4 43 3
1
⁄2 89
7
⁄8 22 2 50 10 284 15,000
1XL-4 M7
1
⁄2 15 1
3
⁄4 43 3
1
⁄2 89
7
⁄8 22 4 100 12 340 15,000
1XL-8 M7
1
⁄2 15 1
3
⁄4 43 3
1
⁄2 89
7
⁄8 22 8 203 16 454 15,000
10L-2 M7
3
⁄4 20 1
5
⁄32 40 3
11
⁄64 81 1
3
⁄16 30 2 50 8 227 80,000
100XL-4 M7
3
⁄4 20 1
5
⁄32 40 3
11
⁄64 81 1
3
⁄16 30 4 100 8 227 105,000
100XL-8 M7
3
⁄4 20 1
5
⁄32 40 3
11
⁄64 81 1
3
⁄16 30 8 203 8 227 105,000
A = overall width of the valve.
B = overall height of the valve, with lever closed, not including thermostat element length.
D = length of shank , from shoulder under outlet orifice overhang to inlet orifice edge.
T = length of thermostat element, measured from inlet orifice edge to end of thermostat.
* 150psi set pressure
REINSPECTION OF T&P RELIEF VALVE: Temperature and Pressure
Relief Valves should be reinspected AT LEAST ONCE EVERY THREE
YEARS by a licensed plumbing contractor or authorized inspection agency,
to insure that the product has not been affected by corrosive water
conditions and to insure that the valve and discharge line have not been
altered or tampered with illegally. Certain naturally occurring conditions
may corrode the valve or its components over time, rendering the valve
inoperative. Such conditions are not detectable unless the valve and its
components are physically removed and inspected. Do not attempt to
conduct this inspection on your own. Contact your plumbing contractor
for a reinspection to assure continuing safety. FAILURE TO REINSPECT
THIS VALVE AS DIRECTED COULD RESULT IN UNSAFE TEMPERATURE
OR PRESSURE BUILD-UP WHICH CAN RESULT IN SERIOUS INJURY OR
DEATH AND/OR SEVERE PROPERTY DAMAGE.
NOTICE
A relief valve functions in an emergency by discharging water. Therefore,
it is essential that a discharge line be piped from the valve in order to carry
the overflow to a safe place of disposal. The discharge line must be the
same size as the valve outlet and must pitch downward from the valve and
terminate at least 6”(152mm) above the floor drain where any discharge
will be clearly visible. For 100DT discharge line consult your Watts agent.
Direct Top Tapping
For Heaters
Use standard or extra length
extension thermostat.
Alternate
Only when the tappings are
not provided
Use standard or extra length
extension thermostat.
WARNING
!
T
B
A
D
ES-10L/100XL 1452 © 2014 Watts
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