NEPTUNE SPECIFICATION FOR GENERAL USE
Glycol Feed System
I. General – Provide a completely, preassembled package Glycol Feed System
as manufactured by Neptune Chemical Pump Company.
II. Pump – The pump shall be a bronze rotary gear pump with a capacity of 1.5
g.p.m. at a pressure of 100 p.s.i. (optional 3 g.p.m. at 100 p.s.i.). Pump
shall be mounted below the tank.
III. Tank – The tank shall be constructed of polyethylene and be provided with a
four-leg carbon steel stand with four bolt pads. The tank stand shall have
upper and lower steel support banding to insure tank stability. Tank stand
shall be painted with a two-coat system consisting of an oxide primer and
alkyd enamel finish.
IV. Piping – Pump suction piping shall be piped using PVC fittings and tubing.
A PVC ball valve and a cast iron “Y” strainer shall be provided in the pump
suction piping.
Pump discharge manifold shall be piped using Schedule 40 brass fittings
suitable for chilled or hot water service. A pressure switch, ball valve, brass
check valve and brass relief valve shall be mounted on the pump discharge
assembly manifold. Piping shall be supported at both the top and
bottom of the tank frame. The brass relief valve shall be piped back to the
tank using PVC tubing and fittings. A pressure gauge shall be mounted in
the discharge piping.
V. Panel – A 115 volt control panel with NEMA 4X enclosure consisting of the
following shall be provided:
- H-O-A selector switch with running light and magnetic starter for feed
pump. In AUTO, the pump is operated by the skid-mounted
differential (adjustable) pressure switch and interlocked to a low level
float switch mounted in the side of the tank. Level switch also
energizes a low level (optional) audible alarm with silence push button
for alarm acknowledgement. Panel shall also be equipped with an 8’
power cord with grounded plug. Panel shall be mounted to the tank
frame and positioned at eye level for ease of operation. Panels
mounted on tank lids or mounted below the tank are unacceptable.
All electrical components (pressure switch, level switch, and pump)
shall be wired in conduit to control panel. Loose, exposed,
unprotected wire is unacceptable.
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