corrosion-resisting material and shall be suitable for remote
mounting. A shutoff switch, NEMA Type 2, shall be provided for
the horn.
2.10
ACCESSORIES
2.10.1
Scale
**************************************************************************
NOTE: Insert "two" for plants of 11 L/s 250,000 GPD
capacity and less; and "three" for plants above 11
L/s 250,000 GPD.
**************************************************************************
Scale shall be beam indicating floor type portable platform scale with a
capacity of not less than 450 kg 1,000 lb. Scale shall include a weigh
beam mounted on a metal pillar attached to a frame. The scale shall be
provided with four metal wheels. Platform shall be of adequate size to
accommodate 68 kg 150-lb cylinders of chlorine.
2.10.2
Chlorine Gas Manifold
Chlorine gas manifold shall be of a material resistant to chlorine and
suitable for the working pressure involved.
2.10.3
Flexible Connector
Flexible connector between chlorine gas manifold and the chlorinator shall
be extra-heavy Type K seamless copper tube conforming to ASTM B 88M ASTM B
88.
2.10.4
Water Piping
Water piping shall be schedule 80 PVC piping with solvent welded joints.
Gate valve and check valve conforming to MSS SP-80 and a Y-pattern brass or
stainless steel strainer shall be provided.
2.10.5
Solution Piping
Solution piping from chlorinator to diffuser shall be flexible polyethylene
pipe, chlorine solution hose, rigid polyvinylchloride (PVC) pipe, or rigid
acrylonitrile-butadiene-styrene (ABS) pipe.
2.10.6
Vent Tubing
Vent tubing shall be any elastomer or plastic tubing resistant to chlorine
or chlorine solutions. Any other material having qualities acceptable for
such use may be substituted in place of the elastomer or plastic tubing.
Vent line shall be sloped continuously downward to outside of housing
without dips or sags. Insect screen shall be provided at end of line.
2.10.7
Signal Tubing
Signal tubing shall be Type K soft copper tubing.
2.10.8
Diffuser
Diffuser shall be of rigid PVC or ABS pipe resistant to chlorine solution.
The diffuser shall be perforated and of the open channel type and shall be
SECTION 11375N
Page 58
Previous Page
