MEC 1/4 in. MNPT Stainless Steel Liquid Vent Valve with T-Handle

Item # 290800 | MEC Part # MEJ402S | UPC Code 815505015509 | UNSPSC Code 40141616
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Product Overview

Marshall Excelsior is the only manufacturer in the industry that offers 3 types of vent valves Low Emission, Self-Cleaning Low Emission, and Standard Vent Valves. All the vent valves below are designed to minimize loss of product while allowing the operator to effectively bleed down connections and detect liquid levels while filling containers. Vent valves provide an effective means to verify valves have closed in the transfer system when installed into the downstream auxiliary port on the Marshall Excelsior globe and angle valves. Opening the vent valve until liquid or vapor stops venting indicates it is safe to disconnect.

  • T-handle stem that is non-removable
  • Replacement handle only
  • Stainless steel
  • #54 Orifice
  • Includes captures stem
  • Rated for LP-Gas and NH3 use
  • UL listed

Proposition 65 Information

Prop65 Warning Icon WARNING: These products contain a chemical known to the state of California to cause cancer and birth defects or reproductive harm.


Adjustable, Threaded
Manufacturer Warranty
5 years from manufacture date
Product Depth (in.)
Product Weight (lb.)
Propane Tank Valves Type
Valve Type
Pressure Balance


5 years from manufacture date