MEC MEV300FIRV-3F/265 300# Flanged Internal Relief Valve 265 PSIG FKM Seals

Overview

MEC MEV300FIRV-3F/265 300# Flanged Internal Pressure Relief Valve – 265 PSIG – FKM SealsThe MEC (Marshall Excelsior) MEV300FIRV-3F/265 is a heavy-duty 300# flanged internal pressure relief valvedesigned for high-capacity industrial propane (LP vapor) and industrial gas service systems. This valve is factory set at 265 PSIG and uses FKM sealing material, offering improved resistance to heat, chemical exposure, and long-term wear compared to standard elastomer seals.

This internal relief valve is commonly installed in bulk plant systems, high-flow industrial storage installations, and flange-mounted relief valve ports, where strong sealing performance and dependable automatic overpressure protection are required.✅ Genuine MEC / Marshall Excelsior relief valve✅ 300# flanged mounting configuration✅ Internal pressure relief design for high-capacity applications✅ Factory set at 265 PSIG✅ FKM seals (Viton-type) for enhanced durability✅ Ideal for propane vapor and industrial gas service environments✅ Brand New — ready for installation

Includes:(1) MEC MEV300FIRV-3F/265 Internal Relief Valve — Brand New📌 Note: Buyer should verify flange size, pressure class requirements, and media compatibility prior to installation.

Product details

Part / SKU	MEV300FIRV-3F/265

Package includes

• MEC MEV300FIRV-3F/265 300# Flanged Internal Relief Valve 265 PSIG FKM Seals

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.