Kidde Fire Systems Surge Protector P/N 81-CO2MAN-001 Manuale Utente

P/N 81-CO2MAN-001

B-9

September 2013

The construction of the two-way union end ball valve product design helps make installation 

and maintenance easy. This product has the "free floating" ball principle. The ball is not fixed 

and is free to align under line pressure. The resulting benefit from this feature of the valve 

design is a tight shut-off with the flow in either direction, regardless of the position of the valve 

in the pipeline. In order to facilitate maintenance, the assembly consists of a union on each 

side of the valve body.

The lockout valve with limit switch must be installed in the discharge pipe network, 

downstream of all cylinders, check valves, and directional/stop valves. Lockout valves can be 

installed in either the vertical or horizontal position using good pipe fitting practices. Place two 

to three wraps of Teflon tape on male threads of pipe. Attach lockout valve unions to pipe, but 

do not fully tighten at this time. Rotate the valve body into position, then tighten both unions.
1. Use Teflon tape or paste on male threads.
2. Can be installed vertically and horizontally.
3. Should be locked in the "open" position using a padlock. 
4. Must be located downstream of ALL cylinders and should be easily accessible.
5. Must be electrically supervised.

B-7.1.1

STEM SEAL ADJUSTMENT

If leakage is evident in the stem packing area, tighten the adjusting nut (the nut beneath the 

handle) 1/8 turn. If the leak persists, repeat the above.
Note: The switches and the corresponding cams are preset by the valve assembly supplier to 

the configurations indicated below. No adjustment to the cams is required. When the 

cam is engaged with the switch, the switch contacts are closed, thus closing the 

normally open contacts. Terminals 1 through 6 are used with the microswitches. 

Terminals 7 and 8 are for optional equipment not part of this assembly. 

•

Switch 1 can also be wired to provide positive (LED, strobe, bell etc.) indication that the 

valve is fully closed.

•

Switch 2 must always be wired in series with the electric control head in the releasing 

circuit. 

Note: The limit switch assembly consists of two (2) single pole, double throw (SPDT) 

mechanical switches, which are rated to 15 amps.

Table B-2. CO

2

 Lockout Valve with Limit Switch Specifications

81-934711-000

1/2 in.

(DN15)

21/32 in.

(17 mm)

3-15/19 in.

(100 mm)

1-15/16 in.

(49 mm)

2-1/4 in.
(57 mm)

5-1/2 in.

(140 mm)

2-51/64 in.

(71 mm)

2-1/2 in.
(64 mm)

81-934712-000

3/4 in.

(DN20)

13/16 in.

(21 mm)

4-1/2 in.

(114 mm)

2-3/16 in.

(56 mm)

2-39/64 in.

(66 mm)

5-1/2 in.

(140 mm)

2-51/64 in.

(71 mm)

2-1/2 in.
(64 mm)

81-934713-000

1 in.

(DN25)

1 in.

(25 mm)

4-15/16 in.

(125 mm)

2-3/8 in.
(60 mm)

2-63/64 in.

(76 mm)

6-1/2 in.

(165 mm)

2-51/64 in.

(71 mm)

2-1/2 in.
(64 mm)

81-934714-000

1-1/2 in.

(DN40)

1-7/16 in.

(37 mm)

5-7/8 in.

(149 mm)

2-3/4 in.
(70 mm)

3-7/8 in.
(98 mm)

8-1/2 in.

(216 mm)

2-51/64 in.

(71 mm)

2-3/4 in.
(70 mm)

81-934715-000

2 in. 

(DN50)

1-23/32 in.

(44 mm)

6-7/8 in.

(175 mm)

3-3/8 in.
(86 mm)

4-1/2 in.

(114 mm)

8-1/2 in.

(216 mm)

2-51/64 in.

(71 mm)

2-3/4 in.
(70 mm)