Rotoflux rotary union (rotary joint) from the Double E Company

Rotary Unions

Rotary Unions / Rotary Joints
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Double E / Rotoflux rotary unions are have a high-precision design to reduce vibrations. Stainless steel rotor and solid brass housing reduce corrosion. Easy cross reference to existing unions.

Rotary Union Features

Rotoflux rotary unions available in North America from the Double E Company.


Double E Rotoflux Rotary Unions are designed and manufactured to solve many of the problems commonly associated with rotary unions, including corrosion, leaking, and vibration. Through the use of advanced design and top-quality materials, Rotoflux unions offer durability and strength. Rotoflux unions ensure that your high tolerance machinery works the way it was designed to – without added vibration or noise
 

  • Durable and dependable
  • Two ball bearings eliminate vibration and wobble
  • Stainless steel rotors and brass housing eliminate corrosion
  • Unique seal design ensures a constant pressure
  • Viton O-Ring provides a complete seal, even in high temperatures

ROTARY
JOINT

WATER

ROTARY
UNION

UNIVERSAL
CONTINUOUS CASTING
IN THE SHAFT MOUNTING
HIGH PRESSURE
HIGH SPEED
Rotary Joint for Water
Max. Pressure: 750 psi
Max. Temperature: 350 °F
Max Speed: 3500 RPM

Size: 1/4" - 2"
# of passages:
1 - 2
Rotary Joint for Water
Max. Pressure: 150 psi
Max. Temperature: 250 °F
Max Speed: 100 RPM

Size: 3/4" - 1½"
# of passages:
1 - 2
Rotary Joint for Water
Max. Pressure: 750 psi
Max. Temperature: 250 °F
Max Speed: 3500 RPM

Size: 1/4" - 2"
# of passages: 1
Rotary Joint for Water
Max. Pressure: 5700 psi
Max. Temperature: 250 °F
Max Speed: 1500 RPM

Size: 1/4" - 1/2"
# of passages: 1
HIGH PRESSURE
LOW SPEED
DOUBLE PASSAGE, HIGH PRESSURE, LOW SPEED
FOUR PASSAGE, HIGH PRESSURE, LOW SPEED
SIX PASSAGE, HIGH PRESSURE, LOW SPEED
 
Max. Pressure: 150 psi
Max. Temperature: 250 °F
Max Speed: 250 RPM

Size: 3/8 " - 1/2"
# of passages: 1
 
Max. Pressure: 150 psi
Max. Temperature: 250 °F
Max Speed: 250 RPM
Size: 3/8"
# of passages: 2
Rotary Joint for Water
Max. Pressure: 150 psi
Max. Temperature: 250 °F
Max Speed: 250 RPM

Size: 3/8 "
# of passages: 4
Rotary Joint for Water
Max. Pressure: 150 psi
Max. Temperature: 250 °F
Max Speed: 250 RPM

Size: 3/8 "
# of passages: 6

ROTARY
JOINT

VAPOR

ROTARY
UNION

UNIVERSAL 
 
Universal Rotary Join
Max. Pressure: 120 psi
Max. Temperature: 330 °F

Rotary Joint for WaterMax Speed: 500 RPMRotary Joint for Water
Size: 1/4" - 2"
# of passages: 1 - 2

ROTARY
JOINT

HOT
OIL

ROTARY
UNION

UNIVERSAL 
 
Universal Rotary Joint
Max. Pressure: 100 psi
Max. Temperature: 395°F
Max Speed: 500 RPM

Size: 1/4" - 2"
# of passages: 1 - 2

ROTARY
JOINT

AIR
and
VAC-
UUM

ROTARY
UNION

AIR AND VACUUM
IN THE SHAFT MOUNTING
HIGH PRESSURE
LOW SPEED
DOUBLE PASSAGE, HIGH PRESSURE, LOW SPEED
Rotary Union for Air / Vacuum
Max. Pressure / Vacuum: 150 psi - 28"Hg
Max. Temperature: 250°F
Max Speed: 3500 RPM

Size: 1/4" - 2"
# of passages: 1
Rotary Union for Air / Vacuum
Max. Pressure / Vacuum: 150 psi - 28"Hg
Max. Temperature: 250°F
Max Speed: 3500 RPM

Size: 1/4" - 2"
# of passages: 1
Rotary Union for Air / Vacuum
Max. Pressure / Vacuum: 150 psi - 28"Hg
Max. Temperature: 250°F
Max Speed: 250 RPM

Size: 3/8 - 1/2"
# of passages: 1
Rotary Union for Air / Vacuum Max. Pressure / Vacuum: 150 psi - 28"Hg
Max. Temperature: 250°F
Max Speed: 250 RPM

Size: 3/8 "
# of passages: 1
FOUR PASSAGE, HIGH PRESSURE, LOW SPEED
SIX PASSAGE, HIGH PRESSURE, LOW SPEED
 
 
Max. Pressure / Vacuum: 150 psi - 28"Hg
Max. Temperature: 250°F
Max Speed: 250 RPM

Size: 3/8 "
# of passages: 4
Rotary Union for Air / VacuumRotary Union for Air / Vacuum
Max. Pressure / Vacuum: 150 psi - 28"Hg
Max. Temperature: 250°F
Max Speed: 250 RPM
Size: 3/8"
# of passages: 6

ROTARY
JOINT

OIL

ROTARY
UNION

HYDRAULIC OIL
HIGH PRESSURE
HIGH SPEED
IN THE SHAFT MOUNTING
HIGH PRESSURE
LOW SPEED
Rotary Union for Oil
Max. Pressure: 750 psi
Max. Temperature: 250°F
Max Speed: 3500 RPM

Size: 1/4" - 2"
# of passages: 1
Rotary Union for Oil
Max. Pressure: 5700 psi
Max. Temperature: 250°F
Max Speed: 1500 RPM

Size: 1/4" - 2"
# of passages: 1
Rotary Union for Oil Max. Pressure: 750 psi
Max. Temperature: 250°F
Max Speed: 3500 RPM

Size: 1/4" - 2"
# of passages: 1
Rotary Union for Oil
Max. Pressure: 850 - 3600 psi
Max. Temperature: 250°F
Max Speed: 250 RPM

Size: 3/8" 1/2"
# of passages: 1
DOUBLE PASSAGE, HIGH PRESSURE, LOW SPEED
4 PASSAGE, HIGH PRESSURE, LOW SPEED
6 PASSAGE, HIGH PRESSURE, LOW SPEED
            
Rotary Union for Oil
Max. Pressure: 850 - 3600 psi
Max. Temperature: 250°F
Max Speed: 250 RPM

Size: 3/8 "
# of passges: 2
Rotary Union for Oil
Max. Pressure: 850 - 3600 psi
Max. Temperature: 250°F
Max Speed: 250 RPM

Size: 3/8 "
# of passges: 4
Rotary Union for Oil
Max. Pressure: 850 - 3600 psi
Max. Temperature: 250°F
Max Speed: 250 RPM

Size: 3/8 "
# of passges: 6

ROTARY
JOINT

COOL-
ANT

ROTARY
UNION

HIGH PRESSURE, HIGH SPEED
HIGH PRESSURE, HIGH SPEED
Rotary Union for Coolant
Max. Pressure: 600 - 1500 psi
Max. Temperature: 250°F
Max Speed: 10000 - 20000RPM

Size: 3/8 "
# of passges: 1
NOT FOR DRY RUNNING
Rotary Union for Coolant
Max. Pressure: 600 - 1500 psi
Max. Temperature: 250°F
Max Speed: 10000 - 20000RPM

Size: 3/8 "
# of passges: 1
FOR DRY RUNNING
Double E Rotoflux Rotary Unions

Double E Rotoflux rotary joints are designed and manufactured to solve many of the problems commonly associated with rotary unions, including corrosion, leaking, and vibration. Double E stocks a large inventory of standard rotary unions and offers short delivery times.
 

Double E Rotoflux rotary unions are built using only high-grade materials, including an all-brass housing, stainless steel rotors, and tungsten carbide seals. Rotoflux unions ensure that your high tolerance machinery works the way it was designed to – without added vibration or noise.

Advanced Design

The double ball bearing design of Rotoflux unions allows the rotor to rotate freely, without vibration or wobble. The stainless steel rotors are designed with an end pilot for high speed applications to ensure concentric rotation. A flanged rotor can be used on applications that require both clockwise and counterclockwise rotation. Stainless steel springs ensure corrosion-free performance throughout the life of the rotary union. Also, a short union is available for applications with limited space.

Emphasis on Seals

Double E Rotoflux unions have been designed with seals in mind. Tungsten carbide to carbon graphite seals are used for clean water, steam, air, vacuum, and hot oil applications. Tungsten carbide to tungsten carbide seals are used for applications with poorly filtered water, hydraulic oil, coolant, and abrasive fluids. All seal faces are micro-lapped for a perfect fit, ensuring that specific pressures on both sides of the seal remain in balance regardless of fluid or air pressure. A unique pin design prevents the rotation of the floating seal, and a Viton O-ring provides static sealing even in high temperatures and harsh chemical conditions.


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