Marshall Excelsior MEH503 UNI-KAPS Relief Valve Cover for 3/4″–1-1/4″ Valves

Overview

Marshall Excelsior MEH503 UNI-KAPS Relief Valve Cover – Heavy-Duty Protection for LP, Propane & Natural Gas SystemsThe Marshall Excelsior UNI-KAPS MEH503 is a durable, self-venting relief valve cover designed to fit virtually all 3/4" to 1-1/4" relief valves. Built for industrial LP, propane, and natural gas applications, this cap helps protect critical ACME threads while blocking dust, debris, insects, and environmental contaminants.

Engineered to meet NFPA specifications, this adaptable molded cap is ideal for bulk plant systems, DOT cylinder filling stations, transfer operations, and service vehicles. The self-venting feature allows pressure equalization while still maintaining debris protection.

Key Features

• Fits a wide range of relief valve sizes: 3/4" to 1-1/4"
• Heavy-duty molded construction for long-term industrial useSelf-venting design for safe pressure dissipationProtects ACME threads from dirt, moisture, and foreign materialHelps extend valve life and maintain equipment integrity
• Compatible with propane, LP gas, and natural gas systemsCommonly used in bulk plants, dispenser cabinets, cylinder filling setups & service operations
• Ideal Pairings:Relief valves in LP & propane bulk tanksACME-type safety and shut-off valvesDOT cylinder fill assembliesLP gas transfer equipmentThis is a brand new OEM Marshall Excelsior product, ensuring reliability and compatibility in demanding industrial environments.

Product details

Part / SKU	MEH503

Package includes

• Marshall Excelsior MEH503 UNI-KAPS Relief Valve Cover for 3/4"–1-1/4" Valves

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