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DUFF-NORTON Plain Cast Iron Rotary Union - Cast Iron Rotating Joints & Unions
DUFF-NORTONCast Iron Rotating Joints & Unions

DUFF-NORTON Plain Cast Iron Rotary Union

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

Also listed as: 440144 C · 440144-C

Brand
DUFF-NORTON
Item
Plain Cast Iron Rotary Union
Part Number
440144C
Category
Cast Iron Rotating Joints & Unions
Available to Order
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Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Compliance & shipping

Hazardous material
Not classified as hazardous
California Prop 65 warning
No warning recorded
Licence required
No licence required
Safety Data Sheet
Not available
Special shipping
Ships under standard freight

Technical Specifications

DUFF-NORTON
Manufacturer Part Number
440144C
Type
Plain Cast Iron
Passages
1
Standards
SDWA
Bearing Type
Dual Bearings
Catalog Page
N/A
Fitting Type
Straight
Body Diameter
0.22 in
Maximum Speed
700 rpm
Overall Width
9.69 in
Seal Material
Carbon Graphite
Flow Direction
Single-Flow Flow Direction The direction of flow to or from the tank from supply and return lines.
For Fluid Type
Gases; Non-Potable Water; Oils
Overall Length
9.69 in
Thread Rotation
Right Hand
Fitting Material
Cast Iron
Country of Origin
USA (subject to change)
Internal Material
Plain Stainless Steel
Number of Passages
1 Number of Passages The number of independent flow channels in the joint or union.
Fitting Material Finish
Plain
Threaded Rotating Shaft
1-1/2"
Internal Fitting Material
Stainless Steel
Rotating Shaft Thread Size
1-1/2"
Stationary Port Thread Size
1-1/2 in
Elbow Outlet Connection Type
Threaded
Maximum Operating Temperature
375 °F
Minimum Operating Temperature
32 °F
Rotating Shaft Connection Type
Threaded
Stationary Port Connection Type
Threaded
Internal Fitting Material Finish
Plain
Stationary Connection to Body End
7.75 in
Operating Pressure for Fluid Types
302°F for Water; 347°F for Steam; 392°F for Hot Oil

Technical Documents

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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.

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.
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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.

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This DUFF-NORTON rotating joint is a straight, plain cast iron union with two passages and a 1-1/2" threaded rotating shaft. It uses a carbon graphite seal and is rated for a maximum speed of 700 rpm. Typical applications include transferring fluid or air from a stationary supply line into rotating machinery in industrial settings such as mills and processing plants
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This DUFF-NORTON rotating joint is a straight, plain cast iron union with two passages. It features a 1-1/2" threaded rotating shaft and a carbon graphite seal, with a maximum speed of 700 rpm. Used to transfer fluid or gas from a stationary supply line into rotating machinery in industrial applications

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