JB INDUSTRIESRefrigeration Valve Cores & Depressors

JB INDUSTRIES Valve Core: 2 3/8 in Lg, Connection 1/4 in

The JB INDUSTRIES Valve Core (MPN A31999-25) is a refrigeration valve core with a 2 3/8 in length and 1/4 in connection size. It is constructed from brass and includes a PTFE barrel gasket seal and a neoprene cup washer.

SKU 3G-OTH-73221

Brand

JB INDUSTRIES

Item

Valve Core: 2 3/8 in Lg, Connection 1/4 in

Technical Specifications

JB INDUSTRIES

Manufacturer Part Number

A31999-25 

Material

Brass 

Features

PTFE Barrel Gasket Seal 

Includes

Neoprene Cup Washer 

Product Type

Valve Core 

View Full Spec Sheet

Technical Documents

No technical documents available for this product.

Request documentation →

Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.

Talk to an engineer

Ask a question

JB INDUSTRIES Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

Frequently Asked Questions

What is the JB INDUSTRIES Valve Core A31999-25 used for?

The JB INDUSTRIES Valve Core A31999-25 is used in refrigeration systems to seal service ports and allow refrigerant access for charging, evacuation, or testing. Its brass construction and PTFE barrel gasket seal provide reliable leak resistance in HVACR applications.

What are the specifications of the JB INDUSTRIES Valve Core A31999-25?

The JB INDUSTRIES Valve Core A31999-25 has a 2 3/8 in length and 1/4 in connection size. It is made of brass, includes a neoprene cup washer, and features a PTFE barrel gasket seal. The manufacturer part number is A31999-25.

Where to buy the JB INDUSTRIES Valve Core A31999-25 worldwide?

You can source the JB INDUSTRIES Valve Core A31999-25 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations, ensuring you receive genuine JB INDUSTRIES components.

How to install the JB INDUSTRIES Valve Core A31999-25?

To install the JB INDUSTRIES Valve Core A31999-25, first depressurize the system. Use a valve core tool to remove the old core, then insert the new core with the neoprene cup washer facing inward. Tighten to manufacturer torque specs and leak-test with an electronic detector.

Used in

Common applications for JB INDUSTRIES

Refrigeration system servicing — JB INDUSTRIES analog pressure gauges (QC-G864) for monitoring low-side pressures

HVACR installation — JB INDUSTRIES capillary tubing (TC-36-12) for metering refrigerant in split systems

Commercial air-conditioning maintenance — JB INDUSTRIES saddle piercing valves (A32906) for adding access ports to copper lines

Evacuation and charging — JB INDUSTRIES valve core removers (CM-CRTOOL) for rapid core extraction during pump-down

Field service hose connections — JB INDUSTRIES low side charging hoses (CLS-60B) for connecting manifold gauges to systems

Flow control in service lines — JB INDUSTRIES mini ball valves (MBV5-03) for isolating sections during repair

JB INDUSTRIES Products

3G Electric supplies JB INDUSTRIES refrigeration valve cores & depressors. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

Browse all JB INDUSTRIES products →Contact our engineers →