MEC ME990K-24-500 3” Internal Valve 500 GPM Propane LP Kelrez Seals

MEC ME990K-24-500 Excelerator™ 3” Threaded Internal Valve – 500 GPM, Kelrez® SealsThe MEC ME990K-24-500 Excelerator™ Internal Valve is a high-performance 3-inch threaded emergency shut-off valve designed for bulk propane and LP gas transfer systems. Manufactured by Marshall Excelsior (MEC), this valve is engineered for high-flow applications up to 500 GPM, making it ideal for transport trailers, bobtails, and bulk storage tanks.Equipped with Kelrez® seals, this valve offers exceptional resistance to chemicals, temperature extremes, and wear—ensuring long service life and reliable performance in demanding propane environments. The internal shut-off design provides rapid closure in emergency situations, enhancing system safety and regulatory compliance.Key Features & Benefits:Genuine MEC Excelerator™ Internal Valve3” threaded connectionHigh-flow 500 GPM capacityKelrez® seals for superior durabilityDesigned for propane and LP gas serviceCommonly used in bulk plants, transport trailers, and bobtail trucksAlways verify compatibility with your tank or trailer application prior to installation. Professional installation recommended.

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.