Specification

Series 2000-M5
Two-Way Flow Checks
Sizes:
3
⁄4"-3"
Series 2000-M5 Two-Way Flow Checks are designed to pro-
vide positive gravity shutoff when circulator is not running.
These checks are easily opened for gravity circulation.
Models
2000-M5 –
3
⁄4"-3" horizontal and angle checks. Iron body con-
struction. Sizes
3
⁄4" - 1
1
⁄2" have female threaded connections.
Sizes 2"-3" have one flanged outlet x two female threaded
connections. One connection can be used for the installation of
an expansion tank when installed as an angle check.
2000S-M5 –
3
⁄4"-1" straight pattern. Bronze body construction,
solder inlet and outlet connections.
Specifications
Flow checks shall be installed on forced hot water heating sys-
tems where indicated on the plans to provide positive gravity
shutoff when circulator is not running. Checks shall be easily
opened for gravity circulation. Threaded end connection checks
shall have an iron body and solder end connection checks shall
have a bronze body. Check shall be a Series 2000-M5.
Pressure – Temperature
Sizes
3
⁄4"-1
1
⁄4"
Maximum Working Pressure – 50psi (344.8 kPa)
Temperature Range 33ºF - 250ºF (5ºC - 121ºC)
Sizes 1
1
⁄2"-3"
Maximum Working Pressure – 125psi (8.6 bar)
Temperature Range 33ºF - 250ºF (5ºC - 121ºC)
Materials
Model 2000-M5
Body: Iron
Seat: Bronze
Center Guide: Brass
Model 2000S-M5
Body: Bronze
Seat: Bronze
Center Guide: Brass
ES-2000-M5
2000-M5
3/
4
"-1
1
/2"
2000S-M5
3/
4
"-1"
2000-M5
2", 2
1/
2
", 3"
Job Name
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Job Location
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Approval
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Engineer
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Contractor’s P.O. No.
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Approval
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Representative
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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 with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.