ME990-3F
3” FLANGED INTERNAL VALVE
INSTALLATION AND
OPERATING MANUAL
Marshall Excelsior Company
MEC Europe AsP
1506 George Brown Drive Marshall, MI 49068
Alsvej 21
Phone (269) 789-6700 Fax (269) 781-8340
8940 Randers SV
Denmark
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 of Marshall Excelsior Co.
FORM #1132 ME990-3F IOM
Rev C 2/3/21
!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 other reproductive harm.
Scope
of the Manual
This manual covers instructions for the ME990-3F
“Excelerator” Series 3” Flanged internal valves.
Also included in this manual are the instructions for
connection from the valve’s operating lever to a cable
control.
Introduction
The ME990-3F internal valve is typically used on the inlets
and outlets of transport truck tanks and large stationary
storage tanks. They can also be installed in-line. Designed
for propane or NH
3
(Anhydrous Ammonia) at ambient
temperatures, the valves can be used on other
compressed gases, but the user should check with the
factory to make sure the valve is suitable for the particular
service and application.
Actuation of the valve can be achieved manually, by cable,
or with a pneumatic actuator.
Specifications
Specifications
Body Size and End Connection Styles:
Inlet: NPS 3 / DN 100, CL300 ASME RF Modified Flange
(4.625” / 117mm bore)
Outlet: NPS 3 / DN 100, CL300 ASME Flange
Maximum Allowable Inlet Pressure:
500 psig / 34.5 bar WOG
Excess Flow Springs:
GPM LPG (vertical down): 175, 250, 300, 375, 400,
475, and 500
l/min LPG: 662, 946, 1136, 1419, 1514, 1798, and 1893
Temperature Capabilities: -20° to 150°F / -29° to 66°C
Approximate weight: 30 pounds / 14 kg
Body Material: Stainless Steel
DOT Internal Self-Closing Stop Valve Requirement--
U.S. Department of Transportation (DOT) regulations
49CFR§178.337-8(a)(4) require each liquid or vapor
discharge outlet on cargo tanks (except for cargo tanks
used to transport chlorine, carbon dioxide, refrigerated
liquid, and certain cargo tanks certified prior to January 1,
1995) to be fitted with an internal self-closing stop valve.
The ME990 series internal valves comply with the internal
self-closing stop valve requirement under the DOT
regulations.