Rego 3181A Brass Vapor Coupling 1″ MNPT x 1-3/4″ Female ACME Propane LP

SKU: 3181A

Weight	1.5 lbs
Dimensions	15 × 10 × 3 in

$38.80

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$38.80	0%
5–9	$36.86	5%
10+	$34.92	10%

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Rego 3181A Brass Vapor Coupling 1" MNPT x 1-3/4" Female ACME Propane LP

Specifications & product details

REGIONS SUPPLY BUYING GUIDE

Product details & buying advice

Check both sides of an adapter or transfer fitting before ordering, especially when joining different connection systems.

Product type	ACME, POL and transfer fittings
Part / SKU	3181A

What to check before ordering

Identify ACME, POL or NPT, the size and male/female form at each end, and the required sealing arrangement.
Confirm the service medium and material, including the specified replacement seal if one is needed.
Have qualified gas-service personnel check the completed connection.

Service reminder: Verify what a cap or plug is designed to do. A protective dust cover should not be assumed to provide a pressure-retaining shutoff.

Have gas-system installation and service completed by qualified personnel. Use the current instructions for the exact model and the requirements that apply at the installation location.

Product help & manufacturer resources

Explore this product guide · Shop this product group · Ask Regions Supply about this part

Overview

The Rego 3181A Brass Vapor Coupling is engineered for secure propane and LP gas vapor service connections.🔹 Versatile Connection: Adapts 1″ Male NPT to 1-3/4″ Female ACME, providing a safe and reliable vapor service fitting for propane equipment and DOT cylinders.🔹 Durable Construction: Made of solid brass for maximum corrosion resistance, durability, and extended service life.🔹 Reliable Performance: Ensures vapor-tight sealing for propane and natural gas systems in industrial and commercial environments.🔹 Industry Standard: Widely used by propane distributors, bulk plants, and equipment operators needing consistent and safe vapor service couplings.🔹 Trusted Brand: Manufactured by Rego Products, a leading supplier of propane and LP gas equipment.

Specifications

Brand: Rego ProductsPart Number: 3181AProduct ID: 4498Connection: 1″ Male NPT x 1-3/4″ Female ACMEMaterial: BrassCondition: Brand NewThis brass vapor coupling is the perfect solution for propane service professionals needing secure, efficient, and long-lasting vapor transfer fittings.

Product details

Part / SKU	3181A

Package includes

Rego 3181A Brass Vapor Coupling 1" MNPT x 1-3/4" Female ACME Propane LP

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

Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

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