Marshall Excelsior Excelerator ME993-16 Installation And Operation Manual

!WARNING!
Failure to follow these instructions or to properly install and
maintain this equipment could result in an explosion and/or
fire causing property damage and personal injury or death.
MEC equipment must be installed, operated, and maintained
in accordance with federal, state, and local codes and
manufacturer's instructions. The installation in most states
must also comply with NFPA No. 58, and ANSI/CGA G-2.1.
For installation in the European Union, the equipment must
also comply with PED/TPED and EN ISO standards. Periodic
inspections, intermediate inspections and exceptional checks
of transportable pressure equipment should be carried out
in accordance with the Annexes of Directive 2008/68/EC and
with 2010/35/EU Directive (TPED) to ensure continued
compliance with their safety requirements
Only personnel trained in the proper procedures, codes,
standards, and regulations of the LP-Gas industry should
install and service this equipment.
The internal valve must be closed except during product
transfer. A line break downstream of a pump may not
actuate the excess flow valve. If any break occurs in the
system or if the excess flow valve closes, the system should
be shut down immediately.
WARNING:
These products contain a chemical known
to the state of California to cause cancer and birth
defects or reproductive harm
Scope of the Manual
This manual covers instructions for the ME993-16 and
ME993-24 "Excelerator" Series 2" and 3" triple flange
internal valves.
Introduction
ME993-16 and ME993-24 "Excelerator" Series Internal
Valves are designed to provide accelerated equalization of
tank pressure and downstream line pressure, providing
fast valve response time for quick opening. These internal
valves are frequently used on bobtail and transport truck
tanks for liquid gas delivery, but they may also be used on
large stationary storage tanks and on in-line installations in
liquid or vapor gas transfer applications. U.L. listed types
are designed for use with Propane or NH
Ammonia) services. Non U.L. listed models are available
with a variety of trim types and body styles and can be
used on other compressed gases, but the installer should
check with the factory to make sure the valves are suitable
for the particular service. Actuation of the valve can be
achieved manually, by cable, or with a pneumatic actuator.
Marshall Excelsior Company
1506 George Brown Drive Marshall, MI 49068
Phone (269) 789-6700 Fax (269) 781-8340
www.marshallexcelsior.com
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
Form #999 IOM ME993-16 & ME993-24
ME993-16 AND ME993-24
FLANGED INTERNAL VALVE
INSTALLATION AND OPERATION
.
(Anhydrous
3
notice. The MEC™ logo is the trademark of Marshall Excelsior Co.
Features

Excelerator equalization bleed area - Provides high
bleed flow for quick opening.

Unique Serviceability Features - Accessible
stainless steel stem hex and socket drive retaining
screws for easy maintenance.

Durable Design:
o
Stainless poppet and stem with hardened, low
friction coating operates smoothly for a long
wear life
o
Fully captured main seal and molded-on bleed
seal will not "Blow-out"
o
Large poppet retaining thread will not break
during reverse flow fill
o
Integral travel stop
o
Stainless steel roller cam

Excess Flow Closure - Functions when flow exceeds
the rated capacity of the valve or piping is sheared
off at the valve.

Back Check Feature - Allows reverse flow filling
with or without actuator device in valve open
position.

Spring loaded Polytetrafluoroethylene (PTFE) stub
shaft packing with auxiliary wiper seals

Rulon® bushings at critical wear points.

Manual, Cable, or Air Open/Close valve actuators.

Thermal Fusible links or plugs melt at 212°F
(100°C) and allow valve closure in the event of a
fire at the valve.
Marshall Excelsior Europe LTD
90 Brynteg Road
Gorseinon, Swansea, SA4 4FR - UK
01382-714308
Rev C 5/8/19