Precautions to ensure safe usage
The precautions given below are intended to ensure safe and correct use of the products.
Note that certain restrictions apply to use of these products. Failure to observe these could result in injury or property damage.

Warning A potentially hazardous situation which could result in death or serious injury.
Caution A dangerous situation which could result in minor or medium injury and/or in which only property damage is foreseen.
Note: See the terminology glosses on our website for words marked with a ※.

TOYOCONNECTOR TC3-PB Brass + Resin (TOYOX Hose Dedicated Coupling)1

Notes for installation

1. When cutting a hose, make sure that the edge face of the hose is cut perpendicularly.
2. Be sure to have a suﬃcient hose length so as not to apply hose bending stress around a coupling.
3.

Warning When inserting hoses, never apply oil, etc., to the surface of the nipples.
It may cause the hose to become disconnected.

4. Make sure that the hose is inserted completely into the root of the nozzle.
5. Do not damage the surface of nipples with blades and other items.
6.

Warning Fasten the cap nut until there are no gaps.
When used in a state where there are gaps, trouble due to ﬂuid leakage or hose disconnection will occur.
As well, be careful to avoid injury due to wrench slips when fastening nuts.

7. Be careful not to tighten resin cap nuts and nipples more than necessary. Overtightening can lead to damage.
Tightening of the cap nut is complete when it gives you a sense of solidly meeting the mating member.
8. Use a monkey wrench for tightening. Do not use a pipe wrench. It will damage the cap nut.
9. Work carefully to avoid cutting yourself on the sharp edge of the coupling.
10. After installation, conﬁrm that ﬂuids do not leak from the couplings before use.
As well, do not use if damage or deformation etc. is discovered.

2

Notes for safe usage
1. TOYOCONNECTOR is a coupling dedicated for the TOYOX Hoses below. TOYOX is not liable for any damages caused by use with any otherhose including those produced by TOYOX as well as those by other manufacturers, as full performance may not be achieved or maintained.
2. Use within the operating temperature and pressure ranges of the applicable hose.
3. In the case of use under negative pressure, negative-pressure usable hoses may not be applicable depending on applications or conditions(temperature, movements, etc.).
4. As there is a bump in the screw portion for the tube, refrain from using this product for sanitary piping (food, etc.).
※ There is a risk of problems with food sanitation.
5. Do not use a hose that is extremely bent near a coupling. The bending radius of a hose should be larger than its ※3 minimum bending radius.
6.

Warning Do not attempt assembly or disassembly of couplings while ﬂuid is running through the hose.
This may cause ﬂuid leakage or hose disconnection.

7. Perform periodic inspections during and before use to make sure that hose disconnection from the coupling and ﬂuid leakage do not take place.
8. Do not allow anything other than the inner surface of the couplings or hose to come in contact with ﬂuids, because the ﬂuids may permeate the hose reinforcement layer or remain inside thecouplings, and bacteria may propagate (attach to the parts) or the hose may deteriorate. Also, dust, hose fragments (reinforcement material) and ink adhering to the outer surface may be mixed in.
9.

Warning Do not use for piping in the applications below. This may cause coupling damage, hose rupture, or hose disconnection.
・For piping such as solenoid valve piping, which would put impact pressure on the piping ・Where vibration or impact will be applied to the coupling・Where constant tensile stress may be applied to the hoses
・In a way that may cause static buildup (electric shock hazard)

10. Do not use outdoors. Resin strength will deteriorate due to sunlight and hose working life will decrease. As well, avoid use near a heat source.
11. Do not use with strong acids such as nitric acid, hydrochloric acid, or sulfuric acid.

3Notes for the reuse of couplings and replacement of hoses
1. When reusing a TOYOCONNECTOR product, make sure that each of its components is not damaged prior to use. Be sure to replace the sleeve.
2. Please make sure to use a brand-new hose.
3. Before replacing a hose, always make sure to remove the ﬂuid and dirt on the coupling surface.
This may cause ﬂuid leakage or hose disconnection.

4

Warning
1. The ﬂuid path (interior) of TOYOCONNECTOR uses brass material.
Phenomena such as corrosion or ﬂuid leaks may occur depending on the type of ﬂuid.
Before use, be sure to check data (refer to data on chemical resistance in the catalog or on the website) or make inquiries to the toll-free number.
As well, make similar checks for ﬂuid contact with the outer surface of couplings.
2. Do not install or use twisted hoses. Twisted hoses are dangerous because they deform their interior structures and cause hose ruptures.
Fix twisted hoses appropriately as shown in the following examples.
Example 1: Hose twisted when it is installedOK

Not allowed(Measures taken)

Example 2: Hose twisted when it is bent

Not allowed
TwistedOK(Measures taken)