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The plug is screwed onto the line or the device and pushed into the matching socket. It turns with the connection, so the hose does not twist and the connection point sees less strain. Steel body with NBR seal. Model RL-30PM, steel, Seal material NBR.
Rotary Plug is a swivelling steel plug for Nitto Kohki quick connect couplings. The swivel keeps the attached hose free of twist even as the equipment is moved around.
Swivelling plug lets the hose follow the movement of the equipment
Steel body made for continuous service
NBR seal across all models in the RL range
Connect by hand, with no tools and no rework of the line
Available with male thread and with female thread
Technical data from the manufacturer catalogue
Series
ROTARY PLUG
Model
RL-30PM
Coupling part
Plug
End connection
Male thread
Port size
Rc 3/8
Body material
Steel (Nickel plated)
Seal material
Nitrile rubber (NBR)
Max working pressure
1.5 MPa {15 kgf/cm2}
Working temperature
Nitrile rubber (NBR): -20 to +80 deg C
Valve structure
One-way shut-off
Applicable fluids
Air
Vacuum service
Not suitable for vacuum application in either connected or disconnected condition.
Size range
1/4 inch, 3/8 inch
Maximum tightening torque, Nm {kgf cm}
1/4 inch : 14 {143}, 3/8 inch : 22 {224}
Flow direction
Fluid flow can be bi-directional when socket and plug are connected.
Working pressure, other units
15 kgf/cm2 / 15 bar / 218 PSI
Neck angle
135 deg as dimensioned on the drawings, that is 45 deg to the tool
Mass
0.050 kg
Part number
317610340
Catalogue page
C01en-b, 63
Dimensions
How the dimension letters in the table map onto the part.
Model
L
øD
T
RL-30PM
(50.8)
(32.8)
R 3/8
Dimensions in millimetres. Values in brackets apply in the connected condition.
Legend: L = overall length; D = socket outside diameter; T = thread or barb size
Models in this series ROTARY PLUG
Model
Application
Steel (g)
L
øD
T
RL-20PM
Rc 1/4
52
(52.1)
(34.1)
R 1/4
RL-30PM
Rc 3/8
73
(50.8)
(32.8)
R 3/8
Every model of the series as printed in the manufacturer catalogue. The row of the article offered here is highlighted.
Operating principle
On disconnection the valve in the socket closes the supply line. The fluid left in the plug escapes.
Rotary function allows 360 deg swivelling.
Big improvement for handling of pneumatic tools.
Rotary neck plug for hose connection to pneumatic tools and pneumatic devices.
Fits at 45 deg angle to the tool eliminating annoying offset load caused by connected hose.
Ideal compact design enables optimum workability by simple body structure. Now far lighter and smaller than conventional models.
New dust-proof design for increased durability.
For air tackers, nailers, impact wrenches and other pneumatic tools.
Ideal body angle achieved by the plug allows comfortable use of tools even in narrow places and overhead work.
Series comparison
Series
Max working pressure
Size range
Valve structure
Applicable fluids
COMPACT ZEROSPILL CUPLA
10 bar
Thread 1/8 inch, 1/4 inch
Two-way shut-off (Spill Reduction)
Air, Water
PURGE LINE CUPLA
10 bar
Inlet R 1/2, outlet socket (PV-30SM)
One-way shut-off
Air
ROTARY PLUG
15 bar
1/4 inch, 3/8 inch
One-way shut-off
Air
HI CUPLA BL
15 bar
1/4 inch, 3/8 inch, 1/2 inch (thread and hose barb); SN type for urethane hose: for 6.5 x 10 mm, 8 x 12 mm and 8.5 x 12.5 mm hose
One-way shut-off
Air, Water
NUT CUPLA / NUT CUPLA 200 / ROTARY NUT CUPLA / HI CUPLA for Connection to Braided Hoses
15 bar
Urethane hose ø5 mm x ø8 mm to ø11 mm x ø16 mm; braided hose ø9 mm x ø15 mm
One-way shut-off
Air, Water
LOCK CUPLA 200
15 bar
Thread and hose barb 1/4 inch, 3/8 inch, 1/2 inch; SNRG type for ø6.5 mm x ø10 mm and ø8.5 mm x ø12.5 mm hose
One-way shut-off
Air
HI CUPLA Two Way Type
15 bar
Thread 1/4 inch, 3/8 inch, 1/2 inch. Hose barb for dia. 6.5 mm x dia. 10 mm and dia. 8.5 mm x dia. 12.5 mm hose.
ROTARY PLUG is the plug to take when the hose has to follow the tool: at 1.5 MPa {15 kgf/cm2} and one-way shut-off it matches the pressure class and valve type of HI CUPLA BL, NUT CUPLA, LOCK CUPLA 200, HI CUPLA Two Way Type, ROTARY LINE CUPLA and ROTARY FULL BLOW LINE CUPLA, so it changes neither the pressure class nor the valve behaviour of such a line. TWIST PLUG and COMPACT ZEROSPILL CUPLA stay at 1.0 MPa {10 kgf/cm2}; COMPACT ZEROSPILL CUPLA shuts off on both sides and is the choice when spill at disconnection weighs more than the swivel. ROTARY PLUG is offered in 1/4 inch and 3/8 inch, so within that size range the decision rests on the swivel requirement rather than on the pressure rating.
Body and seal materials
Body material
Steel (Nickel plated)
Seal material
Mark
Working temperature
Remarks
Nitrile rubber (NBR)
-
-20 to +80 deg C
-
Applications
Portable hand equipment on hose lines
Workstations where hoses get twisted repeatedly
Retrofitting existing connections to stop hose twist
Service and repair bays with changing equipment
Safety and application notes
Before use, please be sure to read the Safety Guide described at the end of this book and the Instruction Sheet that comes with the products.
All technical data on this page is taken from the Nitto Kohki general catalogue Quick Connect Couplings C01en-b, page 63. The complete catalogue is available for download on this page.
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