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The plug marked P is pushed onto the hose and goes into the socket to make the connection. The body is plastic and the seal is NBR. Model BC-03PH, plastic, Seal material NBR.
Quick connect coupling Plastic Cupla BC Type BC-03PH, plastic - Nitto Kohki LA94533
Where weight and corrosion matter, a metal body gets in the way. The Nitto Kohki Plastic Cupla BC Type has a plastic body and comes as a plug or as a socket with a hose barb.
Plastic body, which keeps the coupling light and free of corrosion
NBR as the sealing material on every model in the range
Hose barb end marked H, the hose is pushed on directly
Two sizes in the BC model range, each available as a plug marked P and as a socket marked S
Technical data from the manufacturer catalogue
Series
PLASTIC CUPLA BC Type Valveless
Model
BC-3PH
Coupling part
Plug
End connection
Hose barb
Port size
3/8 inch hose
Body material
Plastic
Seal material
NBR (Nitrile rubber)
Max working pressure
0.07 MPa {0.7 kgf/cm2}
Working temperature
NBR (Nitrile rubber): -20 to +50 deg C
Valve structure
Straight through
Applicable fluids
Air
Size range
1/4 inch, 3/8 inch hose
Working pressure (MPa)
0.07
Working pressure (kgf/cm2)
0.7
Working pressure (bar)
0.7
Working pressure (PSI)
10.2
Seal material NBR remarks
Standard material
WAF
WAF stands for width across flats.
Mass
0.050 kg
Part number
LA94533
Catalogue page
C01en-b, 161
Dimensions
How the dimension letters in the table map onto the part.
Model
L
A
C
øoB
øoD
øoT
BC-3PH
34
13
19
6
15
10.9
Dimensions in millimetres. Values in brackets apply in the connected condition.
Legend: L = overall length; A = hose barb length; C = sleeve dimension
Models in this series PLASTIC CUPLA BC Type Valveless
Model
Application
Plastic (g)
L
A
C
øoB
øoD
øoT
BC-2PH
1/4 inch hose
1.8
41
17
19
4
14
8.5
BC-3PH
3/8 inch hose
2
34
13
19
6
15
10.9
Every model of the series as printed in the manufacturer catalogue. The row of the article offered here is highlighted.
Operating principle
No valve, therefore the lowest pressure drop. The line must be depressurised before disconnecting.
To connect, just push the plug into the socket.
Plastic makes this ideal for use in environment prone to rusting.
Compact and light weight for easy handling.
Valveless construction gives more stable flow.
Series comparison
Series
Max working pressure
Size range
Valve structure
Applicable fluids
PLASTIC CUPLA BC Type Valveless
0.7 bar
1/4 inch, 3/8 inch hose
Straight through
Air
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
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.
PLASTIC CUPLA BC Type applies only to air lines up to 0.07 MPa {0.7 kgf/cm2}; every sibling series in this category is rated 1.0 to 1.5 MPa {10 to 15 kgf/cm2} and is required above that limit. It is the choice where an all-plastic coupling is wanted in an environment prone to rusting and where a straight through, valveless flow path is acceptable. If the line has to close on disconnection, use a one-way shut-off series such as HI CUPLA BL, NUT CUPLA or LOCK CUPLA 200, or COMPACT ZEROSPILL CUPLA with its two-way shut-off.
Body and seal materials
Body material
Plastic
Seal material
Mark
Working temperature
Remarks
NBR (Nitrile rubber)
-
-20 to +50 deg C
-
Applications
Hose lines where a metal body would be too heavy
Environments in which metal parts corrode
Hand-held equipment with a hose connection
Applications with frequent manual connection and disconnection
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 161. The complete catalogue is available for download on this page.
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