We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages - Cast Iron Rotating Joints & Unions
DUFF-NORTONCast Iron Rotating Joints & Unions

DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages

The DUFF-NORTON Rotary Union is a straight, plain cast iron rotating joint with one passage, a 1-1/2" threaded rotating shaft, and a carbon graphite seal, rated for a maximum speed of 700 rpm (MPN 440144C). 3G…

SKU 3G-OTH-479738

Brand
DUFF-NORTON
Item
Rotary Union: Straight, Plain Cast Iron, 1 Passages
Category
Cast Iron Rotating Joints & Unions
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

DUFF-NORTON
Manufacturer Part Number
440144C
Type
Plain Cast Iron
Passages
1
Maximum Speed
700 rpm
Seal Material
Carbon Graphite
Threaded Rotating Shaft
1-1/2"
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

DUFF-NORTON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The DUFF-NORTON Rotary Union is a straight, plain cast iron rotating joint with one passage, a 1-1/2" threaded rotating shaft, and a carbon graphite seal, rated for a maximum speed of 700 rpm (MPN 440144C). 3G Electric interprets this demand and sources the genuine DUFF-NORTON part across 14 industrial departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a DUFF-NORTON rotary union used for?

A DUFF-NORTON rotary union transfers fluid from a stationary supply line into rotating machinery, such as rolls, drums, or spindles. This straight, plain cast iron model with a 1-1/2" threaded rotating shaft and carbon graphite seal is common in paper, steel, and textile processing where reliable rotary-joint sealing is required.

What are the specifications of the DUFF-NORTON 440144C rotary union?

The DUFF-NORTON 440144C is a straight, plain cast iron rotary union with 1 passage, a 1-1/2" threaded rotating shaft, and a carbon graphite seal. It is rated for a maximum speed of 700 rpm. This single-passage design is suited for applications needing one fluid line through the rotating joint.

Where to buy a DUFF-NORTON rotary union worldwide?

3G Electric supplies the genuine DUFF-NORTON 440144C rotary union to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source this part across 14 departments, ensuring you get the correct DUFF-NORTON rotating joint for your application.

How to select the right DUFF-NORTON rotary union for my application?

Select a DUFF-NORTON rotary union by matching the shaft thread size, number of passages, seal material, and maximum speed to your rotating equipment. For this 440144C model, confirm your machine requires a 1-1/2" threaded shaft, single passage, and carbon graphite seal rated up to 700 rpm. Consult your equipment manual for exact specifications.

Used in

Common applications for DUFF-NORTON
Solar panel tracking — Duff-Norton LT series linear actuators adjust panel tilt angles with IP66 protection.
Material handling automation — LS series actuators position conveyor gates or diverters with 675 lbf capacity.
Agricultural equipment — LT actuators control vent openings or seed drill depth in dusty, outdoor conditions.
Industrial valve actuation — LT series with potentiometer feedback provides precise valve position control.
Medical equipment adjustment — LT actuators with low noise plastic nuts are used in patient bed or table positioning.
Packaging machinery — LS series actuators drive pusher arms or lift platforms in high-cycle indoor environments.

DUFF-NORTON Products

3G Electric supplies DUFF-NORTON cast iron rotating joints & unions. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from DUFF-NORTON

View all DUFF-NORTON parts
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages, 2" Threaded Rotating Shaft, Plain (MPN 440467C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite.
DUFF-NORTON
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages, 2" Threaded Rotating Shaft, Plain (MPN 440467C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite.
DUFF-NORTON Rotary Union: Elbow, Plain Cast Iron, 2 Passages, Threaded Rotating Shaft, Gases/Oils (MPN 730859C). Key specifications — Maximum Speed: 600 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite.
DUFF-NORTON
DUFF-NORTON Rotary Union: Elbow, Plain Cast Iron, 2 Passages, Threaded Rotating Shaft, Gases/Oils (MPN 730859C). Key specifications — Maximum Speed: 600 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite.
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 3/8" Threaded Rotating Shaft, Plain (MPN 730444C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 3/8".
DUFF-NORTON
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 3/8" Threaded Rotating Shaft, Plain (MPN 730444C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 3/8".
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 1/4" Threaded Rotating Shaft, Plain (MPN 730432C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1/4".
DUFF-NORTON
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 1/4" Threaded Rotating Shaft, Plain (MPN 730432C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1/4".
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages, 1-1/4 " Threaded Rotating Shaft (MPN 440322C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1-1/4 ".
DUFF-NORTON
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages, 1-1/4 " Threaded Rotating Shaft (MPN 440322C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1-1/4 ".
DUFF-NORTON
DUFF-NORTON
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 1-1/4 " Threaded Rotating Shaft (MPN 440319C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1-1/4 ".
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 2" Threaded Rotating Shaft, Plain (MPN 440465C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite.
DUFF-NORTON
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 1 Passages, 2" Threaded Rotating Shaft, Plain (MPN 440465C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite.
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages, 1-1/4 " Threaded Rotating Shaft (MPN 440321C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1-1/4 ".
DUFF-NORTON
DUFF-NORTON Rotary Union: Straight, Plain Cast Iron, 2 Passages, 1-1/4 " Threaded Rotating Shaft (MPN 440321C). Key specifications — Maximum Speed: 700 rpm; Brand: DUFF-NORTON; Seal Material: Carbon Graphite; Rotating Shaft Thread Size: 1-1/4 ".