REGO 3171A Brass Vapor Hose Coupling 1/2″ MNPT x 1-1/4″ Female ACME LP Gas

SKU: 3171A

Weight	1.5 lbs
Dimensions	15 × 10 × 3 in

$73.27

In stock — available to order.

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Quantity	Unit price	Saving
1–4	$73.27	0%
5–9	$69.61	5%
10+	$65.94	10%

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REGO 3171A Brass Vapor Hose Coupling 1/2" MNPT x 1-1/4" Female ACME LP Gas

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	3171A

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 3171A Brass Vapor Hose Coupling is a rugged, industry-standard fitting engineered for use in propane, LP gas, and natural gas vapor service. With a 1/2″ Male NPT to 1-1/4″ Female ACME connection, this coupling provides a secure, leak-resistant transition between vapor hoses and ACME-type service valves or filling equipment.ApplicationsIdeal for DOT cylinder filling and bulk propane transferCompatible with POL and Type 1 systems via ACME-threaded fittingsDesigned for LP vapor hose connections in filling plants and industrial gas systemsKey FeaturesDurable brass construction ensures long-lasting service and corrosion resistancePrecision-machined design for tight, secure fittings under pressureSupports propane, LP, and natural gas vapor service applicationsCompatible with REGO valves, regulators, and hose assembliesSpecificationsBrand: REGO ProductsMFG#: 3171ASize: 1/2″ MNPT x 1-1/4″ Female ACMEMaterial: BrassCondition: Brand NewWhy Choose REGOTrusted across the propane and industrial gas industry, REGO fittings and adapters are engineered for safety, performance, and reliability in demanding environments.

Features

Genuine REGO OEM replacement part
Manufacturer Part Number: 3171A
Heavy-duty brass vapor hose coupling
1/2″ Male NPT (MNPT) connection
1-1/4″ Female ACME connection
Precision-machined threads for a secure, leak-resistant seal
Corrosion-resistant brass construction
Durable design for long service life
Easy installation and maintenance
Designed for LP propane vapor transfer applications
OEM-quality fit and performance

Applications

LP propane vapor transfer systems
Bulk propane storage facilities
Propane delivery trucks
Cylinder filling stations
Commercial propane installations
Industrial gas transfer equipment
Fuel gas hose assemblies
OEM replacement and maintenance

Package Includes

1 × REGO 3171A Brass Vapor Hose Coupling
Factory-installed sealing components (if equipped)

Condition

Brand New. Item is unused and ready for installation. Please review all photos carefully for the exact item, markings, and configuration before purchasing.

Product details

Part / SKU	3171A

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

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

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