Specification

Maxline
®
Model Numbers Feature Highlights
7-225, 7-230 Series
Thermostatic Mixing Valve
Specification Submittal
☐
7-225-CK-MS 1/2" male NPT, 1/2" female sweat
☐
7-225-CK-F 1/2" female NPT
☐
7-225-CK-PEX 1/2" PEX
☐
7-230-CK-M 3/4" male NPT
☐
7-230-CK-FS 3/4" female sweat
Limited Lifetime - to the original end purchaser in
consumer/residential installations.
5 Years - for industrial/commercial installations.
Refer to www.symmons.com/warranty for complete
warranty information.
Warranty
Note: Append appropriate -sufx to model number.
Options/Modifications
☐
-B Wall cabinet in white enamel finish
including wall mounting bracket
☐
-NI Rough Nickel finish
☐
-T Stainless steel cabinet in place of
standard white cabinet
☐
-W Wall mounting bracket
☐
-X Separate stops (7-225-CK-MS only)
Water temperature limiting valve including integral checks
and dual stainless steel strainers for double protection
against suspended particles in supply lines. Valve made
from lead free* metal components (see table 1 for ow
rates).
Temperature control range:
60°F - 140°F (15.6°C - 60°C)
Minimum supply pressure: 20 psi (138 kPa)
Maximum supply pressure: 125 psi (862 kPa)
Inlet to outlet temperature differential: 10°F (5.55°C)
*According to US Senate bill S.3874, the term "lead free" is
dened as follows: "not more than a weighted average of 0.25
percent lead when used with respect to the wetted surfaces of
pipes, pipe ttings, plumbing ttings, and xtures."
Compliance
-ASME A112.18.1/CSA B125.1
-ASSE 1017/CSA B125.3
-ASSE 1070/CSA B125.3
-NSF/ANSI 61.9; NSF/ANSI 372
-US S.3874
Table 1: Flow Rate - gpm (L/min)
Valve Model
Size
Connection
Min. Flow
Rate
Pressure Differential - psi (kPa)
5 psi
(34 kPa)
10 psi
(69 kPa)
20 psi
(138 kPa)
25 psi
(172 kPa)
30 psi
(207 kPa)
45 psi
(310 kPa)
7-225-CK-MS 1/2" (13 mm)
0.5 gpm
(1.9 L/min)
4.5 gpm
(17.1 L/min)
7.0 gpm
(26.6 L/min)
9.5 gpm
(36.1 L/min)
10.5 gpm
(39.9 L/min)
12.0 gpm
(45.6 L/min)
14.0 gpm
(53.2 L/min)
7-225-CK-F 1/2" (13 mm)
0.5 gpm
(1.9 L/min)
4.5 gpm
(17.1 L/min)
7.0 gpm
(26.6 L/min)
9.5 gpm
(36.1 L/min)
10.5 gpm
(39.9 L/min)
12.0 gpm
(45.6 L/min)
14.0 gpm
(53.2 L/min)
7-225-CK-
PEX
1/2" (13 mm)
0.5 gpm
(1.9 L/min)
3.5 gpm
(13.3 L/min)
5.5 gpm
(20.9 L/min)
8.0 gpm
(30.4 L/min)
8.5 gpm
(32.3 L/min)
9.5 gpm
(36.1 L/min)
12.0 gpm
(45.6 L/min)
7-230-CK-M 3/4" (19 mm)
0.5 gpm
(1.9 L/min)
5.0 gpm
(19.0 L/min)
7.0 gpm
(26.6 L/min)
10.0 gpm
(38.0 L/min)
11.0 gpm
(41.8 L/min)
12.0 gpm
(45.6 L/min)
14.0 gpm
(53.2 L/min)
7-230-CK-FS 3/4" (19 mm)
0.5 gpm
(1.9 L/min)
5.0 gpm
(19.0 L/min)
7.0 gpm
(26.6 L/min)
10.0 gpm
(38.0 L/min)
11.0 gpm
(41.8 L/min)
12.0 gpm
(45.6 L/min)
14.0 gpm
(53.2 L/min)