PK Lindsay 3-66HE 3/4" ID Sandblast Hose Coupling End – Diagram #13

Keep your older PK Lindsay abrasive blasting equipment in service with the PK Lindsay 3-66HE Sandblast Hose Coupling End. This coupling is designed for 3/4" ID abrasive blast hose and is used as part of the blast hose/nozzle connection on PK Lindsay sandblasting equipment.

The 3-66HE is identified as Item #13 in the exploded parts diagram, making it easy to verify the correct component before ordering.

Part Information:

• Part Number: 3-66HE
• Product: Sandblast Hose Coupling End
• Hose Size: 3/4" ID
• Diagram Item: #13
• Application: PK Lindsay Sandblast Hose / Nozzle Assembly
• Equipment Type: Abrasive Blasting Equipment

Includes:

• Exploded Diagram Item #13
• Hose End Coupling
• O-Ring
• Rubber Liner

The 3-66HE is supplied as a hose-end coupling assembly with the O-ring and rubber liner included.

Refer to the exploded parts diagram below to identify the component included with this listing.

Fits / Applications:

• PK Lindsay abrasive blasting equipment
• 3/4" ID abrasive blast hose
• PK Lindsay blast hose assemblies
• Sandblast nozzle and hose coupling assemblies
• Pressure sandblast pots
• Commercial abrasive blasting equipment
• Industrial surface preparation systems

Features:

• PK Lindsay Part #3-66HE
• Designed specifically for 3/4" ID blast hose
• Exploded Diagram Item #13
• Includes O-ring and rubber liner
• Provides the hose-end connection in the blast hose/nozzle assembly
• Suitable for repairing or rebuilding existing PK Lindsay blast hose assemblies
• Used on PK Lindsay 850-122 3/4" x 25' and 850-123 3/4" x 50' blast hose assemblies
• Helps keep older PK Lindsay blasting equipment in service

What It Does

The 3-66HE hose coupling end provides the connection between the 3/4" ID blast hose and the nozzle-side components of the blasting system.

Because abrasive media passes directly through this assembly at high velocity, the coupling's internal rubber liner is an important wear component. The liner helps protect the metal coupling body from direct exposure to the abrasive stream.

The included O-ring helps provide the proper seal within the coupling assembly.

Common Reasons for Replacement:

• Worn or damaged coupling
• Worn internal rubber liner
• Damaged or deteriorated O-ring
• Abrasive leakage around the connection
• Damage to an existing hose-end assembly
• Rebuilding a 3/4" PK Lindsay blast hose
• Restoring older PK Lindsay blasting equipment

Related PK Lindsay Components

The 3-66HE is designed for 3/4" ID blast hose. PK Lindsay also used different hose-end components for other hose sizes:

• 1-74 – 1/2" ID Hose End
• 3-66HE – 3/4" ID Hose Coupling End
• 4-66HE – 1" ID Hose Coupling End

Using the correct coupling for the hose diameter is especially important on a pressurized abrasive blasting system.

Finding Parts for Older PK Lindsay Equipment

PK Lindsay abrasive blasting equipment may no longer be manufactured, but many of these machines remain in service. Blast hose couplings, nozzle components, liners, seals, O-rings, mixing valve parts, and deadman components can be particularly difficult to identify when working from an older exploded parts diagram.

That's why we include the original PK Lindsay part number and exploded diagram item number whenever possible—so you can identify exactly what you need before ordering.

Important:

This listing is for one PK Lindsay 3-66HE 3/4" ID Sandblast Hose Coupling End – Diagram Item #13, including the O-ring and rubber liner.

Other components shown in the exploded parts diagram are sold separately unless specifically stated otherwise.

Always completely depressurize the blast machine before servicing the blast hose, nozzle, coupling, or any other component of the blasting system. Never operate abrasive blasting equipment with a damaged, worn, or insecure hose or nozzle connection.

Need another part shown in the diagram? Reach out with the PK Lindsay part number or diagram item number—we'll help you find the right part to keep your machine working.