MEC Marshall ME990-3F-400 3” 300# Flanged Internal Valve 400 GPM

The MEC Marshall Excelsior ME990-3F-400 Internal Valve is a heavy-duty, high-flow internal tank valve engineered for bulk propane and LP gas storage systems. Designed with a 3-inch 300# flanged connection, this valve delivers up to 400 GPM flow capacity, making it ideal for commercial and industrial propane applications.Manufactured by MEC (Marshall Excelsior), this valve features durable nitrile seals for reliable compatibility with LP gas and long service life in demanding environments. The lever-operated internal mechanism allows for dependable shut-off control and integrates seamlessly with external actuators or emergency shut-off systems.Key Benefits:Designed for bulk propane & LP gas tanks3” flanged connection for secure installation400 GPM high-flow capacity300# pressure classNitrile seals compatible with propane & butaneIdeal for pairing with external shut-off systems and tank safety componentsCommonly used in propane tenals, bulk plants, industrial gas facilities, and commercial storage installations.

Important Notice – Propane Parts, Accessories, and Regulators

This product, including but not limited to propane parts, accessories, fittings, hoses, valves, and regulators, must be installed and serviced by a licensed professional in accordance with all applicable local, state, and federal codes, regulations, and standards.

The seller assumes no responsibility for the installation, inspection, application, maintenance, or use of this product.

It is the sole responsibility of the buyer to ensure the product is appropriate for their intended application and that it is installed correctly by a qualified individual.

Improper installation, maintenance, or use of propane products may result in serious injury, death, fire, explosion, or property damage.

The buyer accepts all risks, liabilities, and potential consequences associated with the use of this product.

By purchasing this item, the buyer acknowledges that they have read, understood, and agreed to these terms and confirm that installation and use will be conducted by a properly licensed and qualified professional.