Marshall Excelsior ME670DBC Installation And Operation Instructions

............................................SCOPE

Intended for use as a high capacity filler valve with a manual
shut-off device in LPG or NH
equipped with either a soft seat back check or excess flow
feature that is internal to the container. The excess flow
version can also be used as a vapor equalizing valve typically
found in NH applicators and nurse tank applications.
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.............................................NOTE............................................

For proper operation and performance of the excess flow
feature, the manual shutoff must be completely open and
back seated.
!WARNING!
Contact with, or inhalation of liquid propane, anhydrous
ammonia and their vapors can cause serious injury and/or
death. LPG must be released outdoors in air currents that
will ensure dispersion to prevent exposure to people and
livestock and in accordance with local regulations. LPG must
be kept far enough from open flame or other sources of
ignition to prevent fire or explosion. LPG and NH
are heavier than air and will not disperse or evaporate
rapidly if released in still air.
An abundant supply of clean water must be readily available
and easily accessible as a means of providing IMMEDIATE
First Aid treatment for exposure to anhydrous ammonia.
Be sure all instructions are read and understood before
Installation, operation and maintenance. These instructions
must be passed on to the end user of the valve.
WARNING:
These products contain a chemical known
to the state of California to cause cancer and birth
defects or reproductive harm
!CAUTION!
 Always wear suitable eye protection, gloves and protective
clothing when operating or servicing LPG and NH3
equipment.
 Check seals, seats and Acme threads for wear and damage
before use. Repair or replace all defective parts
immediately.
 Always completely relieve system or line pressure prior to
servicing equipment and plumbing.
 Use a suitable sealant on tapered pipe joints and always
pressure test for leaks prior to returning to service.
 Always replace protective dust caps after use.
 To prevent the accidental opening of any valve, never carry
or grasp a valve by its hand wheel or handle.
The contents of this publication are for informational purposes only. While every effort has been made to ensure accuracy, these contents are not to be
construed as warranties or guarantees, expressed or implied, regarding the products or services described herein or for their use or applicability. Marshall
Excelsior Co. reserves the right to modify or improve the designs or specifications of such products at any time without notice. The MEC™ logo is the trademark
FORM #1115 ME670DBC FILLER VALVE W/BACK CHECK IOM
Installation and Operation Instructions for
For: ME670DBC
LPG / NH3 Filler Valve with Back Check
............................
containers. These valves can be
3
vapors
3
of Marshall Excelsior Co.
 To prevent accidental discharge, introduction of
contaminants or premature wear never intentionally drag
or drop a hose end valve.
 Regular inspection and maintenance is essential for
continued safe operation.

Features


Positive seating back check valve opens for
maximum flow at minimum pressure drop when
filling - regardless of the type of coupling in which
the valve is installed.

Back Check seat is fully contained in the tank
coupling for maximum protection in the event of
external damage to the valve.

Resilient seat disc assembly is fully contained on
three sides for bubble-tight shut-off and long service
life.

"V"-ring spring -loaded stem seal design requires no
repacking or field adjustment.

Specially machined break-away groove beneath
ACME threads will shear-off with excessive pull on
the hose and leave the valve body intact.

Plugged 1/4" NPT boss accommodates vent valve or
hydrostatic relief valve.
1506 George Brown Drive
Marshall, MI 49068
Phone (269) 789-6700
Fax (269) 781-8340
www.marshallexcelsior.com
Rev A 10/24/17