By-Pass & Filter Feeder0 pages

INSTALLATION & OPERATION INSTRUCTIONS – ALL MODELS
P.O. Box 247 • Lansdale, PA 19446-0247
Tel: 215-699-8700 • Fax: 215-699-0370
Toll-Free Tel: 1-888-3NEPTUNE (1-888-363-7886)
Toll-Free Fax: 1-800-255-4017
Web Site: http://www.neptune1.com
E-mail: pump@neptune1.com

Important Note:
These instructions describe Neptune Models VTF and DBF By-Pass Feeders with
or without a filter bag plus Model DBFC By-Pass Feeders with Cartridge Filter and
Models FTF and FTF-DB Filter Feeders which use a bag inside the basket filter.
Note carefully the flow arrow shown for each type of feeder. The flow in the
standard by-pass feeder must be “upward” if a filter bag kit is to be used. The flow
on the by-pass feeder with a cartridge filter is “downward.” The filter feeder with
bag and basket filter requires “downward” flow.

1. Pipe feeder to cause pressure drop across inlet and outlet resulting in flow through feeder.
2. Provide isolation and drain valves for servicing and draining.
3. Use with hot or cold water only. DO NOT USE FOR STEAM (300 psi @ 200°F max.).
4. Be certain gasket is positioned in groove under cap before replacing cap. (Replace gasket if cap does
not seal by hand pressure.) Cap should seal with hand tightening pressure only. Do not strike cap with
any tool to seal or unseal.
5. Open valves slowly when returning service.
6. CAUTION! DO NOT OPEN UNDER PRESSURE – close isolation valves and bleed off pressure
before opening.
7. CAUTION! CONTENTS MAY BE HOT.
8. CONSULT YOUR CHEMICAL SUPPLIER FOR THE PROPER USE OF THIS TANK WITH THE CHEMICAL.
9. DO NOT COMBINE CHEMICALS IN THIS DISPENSING DEVICE – without specific instructions from your
chemical supplier. READ AND FOLLOW LABEL DIRECTIONS FOR THE CHEMICAL IN USE.

Standard By-Pass Feeder

Filter Bag Kit Option

MODELS VTF & DBF

(FOR MODELS VTF & DBF ONLY)

HANGER

Refer to installation and operation instructions above.
FILTER BAG

OUTLET

FILTER BAG KITS
INCLUDES:
BAG, BAG FRAME,
TUBING AND
CONNECTORS.

HANGER BASE

SHUT
OFF
VALVES

FITG1

FITG2

90° ELBOW
INLET

DRAIN
VALVE

1. Loosen fitting 1 until the tubing turns in the fitting.

GATE
VALVE
OR
ORIFICE

BOILER
FEED
PUMP
DRAIN
VALVE

See instructions for
optional filter bag kit
at right.

INSTALLATION INSTRUCTIONS
FOR FILTER BAG KITS

2. Install fitting 1 into the lower side connection of the tank with
the end of the tube pointing upward.
3. Retighten fitting 1 to the tubing. Tube should point straight up.
The ferrule on the tubing is preset for the tank diameter.
4. Place bag over the hanger wire. Pull the drawstring closed and tie tightly so the bag gathers
around the hanger base with the opening of the hanger base protruding from the bag.

SHUT OFF
VALVES

5. Insert the bag and hanger base into the tank with the opening of the hanger base pointing
downward. The hanger base should engage the tube which is pointing upward and the
tubing should fit into the hanger base until the tubing rests against the edges of the wire
which protrude into the center of the hanger base.
6. The cap will keep downward force on the wire, keeping the assembly in place.