
MODULAR DROP-IN: AUTO-FILL OPTION
Project:
Item Number:
Quantity
MODELS:
26316  Auto-fill Accessory
* See Modular Drop-Ins spec sheets to 
order Auto-fill with drop-in
DESCRIPTION
Vollrath's auto-fill system is available as a 
field-installed option using simple tools for 
installation.The patent pending design installs on 
the manifold drain line to maintain the integrity of 
the well.This allows for easy cleaning, maintenance 
and trouble shooting.
FEATURES
❏ Maintains constant water level  
❏ Eliminates the need to monitor well and add 
water - reducing labor and operating costs
❏ Attaches easily to manifold drain assembly 
using simple tools
❏ 6ft. cord and plug (NEMA 5-15P) does not 
require hard wiring
❏ Check valve/siphon brake prevents cross
contamination of drain and potable water
❏ With manifold drain, flexible use with one 
or more wells
❏ Adjustable water level sensor 
❏ Overflow connection provided 
❏ Control box mounts inside base enclosure  
❏ Power ON/OFF self-indicating rocker switch 
❏ Solenoid valve will close if power is interrupted 
❏ 6 foot sensor wire 
❏ 6 foot flexible hose supplied for connections 
between control box and water inlet or may be used 
for the outlet connection
❏ Control box ratings: 120V, 16W, NEMA 5-15R 
receptacle required
Approvals
Date:
Modular Drop-In: Autofill Option
Water 
level 
sensor
Vollrath 3⁄8" 
recommended 
water level
If water falls below sensor, auto-fill is 
activated.Water is added to wells until the 
water level reaches the bottom of the sensor.
The V ollrath Company , L.L.C.
The Vollrath Company, L.L.C. 
1236 North 18th Street 
Sheboygan, WI 53082-0611 
U.S.A. 
Main Tel: 800.624.2051  
Service T el:800.628.0832 
Fax:800.752.5620
Vollrath of Canada, Ltd. 
6320 Danville Road, Unit 1 
Mississauga, Ontario L5T 2L7 
Canada
800.695.8560 
Tel: 905.565.1167  
Fax:905.565.1168 
Form No. L34662 Rev. 4/04
Control box
6 foot cord & plug
6 foot 
sensor wire
Overflow 
connection
Flexible water line tubing
Water inlet connection 
with check valve
Shut off 
valves
Approximate dimensions shown in 
inches (cm)
Receptacle
To drain
Fresh water 
supply
Ground wire
1.32 
(3.35)
1.20 
(3.05)
1.86 
(4.72)
4.85 
(12.32)