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DUFF-NORTON Cast Iron Rotating Joint - Cast Iron Rotating Joints & Unions
DUFF-NORTONCast Iron Rotating Joints & Unions

DUFF-NORTON Cast Iron Rotating Joint

The DUFF-NORTON Rotary Union is a straight, plain cast iron rotating joint with 1 passage, designed for a 1/4" threaded rotating shaft. It features a carbon graphite seal and supports a maximum speed of 700 rpm (MPN…

SKU 3G-OTH-479750

Also listed as: 730431 C · 730431-C

Brand
DUFF-NORTON
Item
Cast Iron Rotating Joint
Part Number
730431C
Category
Cast Iron Rotating Joints & Unions
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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.

Technical Specifications

DUFF-NORTON
Manufacturer Part Number
730431C
Type
Plain Cast Iron, Plain
Passages
1
Maximum Speed
700 rpm
Seal Material
Carbon Graphite
Threaded Rotating Shaft
1/4"
Rotating Shaft Thread Size
1/4"

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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 1 passage, designed for a 1/4" threaded rotating shaft. It features a carbon graphite seal and supports a maximum speed of 700 rpm (MPN 730431C).

Frequently Asked Questions

What is a DUFF-NORTON rotary union used for?

A DUFF-NORTON rotary union transfers fluid or air from a stationary supply line into rotating machinery. This straight, plain cast iron model with a 1/4" threaded rotating shaft and carbon graphite seal is common in paper, steel, and textile mills for cooling or heating rolls.

What are the specifications of the DUFF-NORTON 730431C rotary union?

The DUFF-NORTON 730431C is a straight, plain cast iron rotary union with 1 passage. It has a 1/4" threaded rotating shaft, a carbon graphite seal, and a maximum speed of 700 rpm. The manufacturer part number is 730431C.

Where to buy a DUFF-NORTON rotary union worldwide?

3G Electric supplies the DUFF-NORTON rotary union 730431C worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this straight, plain cast iron rotating joint with a 1/4" threaded shaft to your facility.

How to install a DUFF-NORTON rotary union?

Ensure the rotating shaft is clean and aligns with the union's 1/4" threaded connection. Apply thread sealant to the shaft, hand-tighten the union, then torque to manufacturer specs. Verify the carbon graphite seal is seated properly and the union rotates freely before pressurizing.

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 rotary union is a straight, plain cast iron rotating joint with a single passage. It features a 1-1/4" threaded rotating shaft and a carbon graphite seal, with a maximum speed of 700 rpm. Used to transfer fluids such as coolant, steam, or thermal oil from a stationary supply line into rotating machinery
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Single-passage rotating joint with plain cast iron body and 1-1/4" threaded rotating shaft. Carbon graphite seal material supports maximum speed of 700 rpm. Used to transfer fluid from a stationary supply line into rotating machinery such as rolls, drums, or spindles
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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
This DUFF-NORTON rotary union is a straight, plain cast iron joint with one passage and a 1-1/2" threaded rotating shaft. The carbon graphite seal enables reliable fluid transfer from stationary supply lines into rotating machinery such as rolls, drums, or spindles. Rated for a maximum speed of 700 rpm, it is commonly used in industrial applications requiring rotary joint sealing
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This DUFF-NORTON rotary union is a straight, plain cast iron joint with one passage and a 1-1/2" threaded rotating shaft. The carbon graphite seal enables reliable fluid transfer from stationary supply lines into rotating machinery such as rolls, drums, or spindles. Rated for a maximum speed of 700 rpm, it is commonly used in industrial applications requiring rotary joint sealing
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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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