Product Overview

69
Boiler Controls
McDonnell & Miller
Boiler Controls
• For McDonnell & Miller Series 47, 67 and 70B boiler
control blow down valve replacement
• Full-ported ball action valve
• Teflon
®
seats provide bind free, leak tight ball movement
• Easy open handle keeps hands away from hot water
and steam
• Gasket and mounting screws included
• Maximum pressure 30 psi (1.8 kg/cm
2
)
• See page 127 for blow-down information
Series 14-B
Valves
Series 14-B Ball Type
Blow Down Valve
F
E
B
A
G
D
C
90°
Ordering Information
Model Part Weight
Number Number Description lbs. (kg)
14-B 310447 Blow down valve 1 (.5)
Dimensions, in. (mm)
ABCDEFG
NPT
6
3
⁄4 (171.4) 4 (102) 2
1
⁄4 (57)
3
⁄4 2
1
⁄2 (64) 2
1
⁄2 (64) 5
3
⁄4 (146)
• For hot water boilers
• Simplifies ASME CSD-1A. code mandated testing of low
water cut-offs by eliminating the need to drain the
system
• Includes one upper and one lower valve for mounting at
crosses in equalizing lines
• Restricts water flow when the low water cut-off’s blow
down valve is open
• Adjustable built-in vacuum breaker in upper valve
provides rapid evacuation of water from the float
chamber
• 1" NPT
• Maximum temperature 250°F (121°C)
• Maximum pressure 160 psi (11 kg/cm
2
)
Series TC-4
Upper Valve
Series TC-4
Test-N-Check
®
Valves
Ordering Information
Model Part Weight
Number Number Description lbs. (kg)
TC-4 195000 Test-N-Check Valves, set of 2 5.3 (.4)
®
®
AB C D
NPT
11
1
⁄2 (38) 1
1
⁄2 (38) 5 (125)
Dimensions, in. (mm)
EF G
NPT NPT Upper Lower
115
1
⁄4 (133) 3
1
⁄16 (78)
Series TC-4
Lower Valve
07. Water Feeders 62-69• 4/29/08 5:22 PM Page 69