Rubber Hose 2SN DN38

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DN	Hose I.D		Wire O.D	Hose O.D	Working Pressure		Burst Pressure		Minimum Bend Radius	Weight	Length
DN	inch	mm	mm	mm	MPa	psi	MPa	psi	mm	kg/m	metres
5	3/16	4.8	11.1	13.4	41.4	6000	16	23720	89	0.32	50/100
6	1/4	6.4	12.7	15.0	40.0	5800	160	22840	102	0.36	50/100
8	5/16	7.9	14.3	16.6	36.0	5250	140	20000	114	0.45	50/100
10	3/8	9.5	16.7	19.0	33.1	4800	132	18840	127	0.54	50/100
13	1/2	12.7	19.8	22.2	27.6	4000	110	15720	178	0.68	50/100
16	5/8	15.9	23	25.4	25.0	3630	100	14280	203	0.8	50/100
19	3/4	19.0	27	29.3	21.5	3120	85	12280	241	0.94	50/100
25	1	25.4	34.9	38.0	16.5	2400	65	9420	305	1.35	50/100
32	1 1/4	31.8	44.5	48.3	12.5	1820	50	7140	419	2.15	20/40
38	1 1/2	38.1	50.8	54.6	9.0	1310	36	5140	508	2.65	20/40
51	2	50.8	63.5	67.3	8.0	1160	32	4560	635	3.42	20/40

Q: The copper joint is leaking, and the tap water hose and copper joint are leaking: Because the water has temperature, and the thermal expansion coefficient of aluminum and copper is different,The coefficient of thermal expansion is different, that is to say, the interface is always moving (heat up, cold contraction),

Q: The basic buret is a rubber tube is inlaid with a glass bead to replace glass piston. Why this burets cannot be used to install Potassium Permanganate solution?: It can not be installed, but it does not conform to the standard of chemical experiment operation. Strong oxidizer will damage rubber tube. That's why it's not recommended. Acid burette operating standards have placed solution requirements.

Q: What is the principle of communicating devices? What if the rubber tube is used as a connecting device to change the water for the fish?: The principle of communicating devices can be explained by liquid pressure. If the same liquid is contained in a U glass tube, a small liquid AB is conceived at the center of the bottom of the communicating device. If the liquid is stationary, it does not flow. The pressure of the liquid in the left tube toward the right side of the liquid AB must be equal to the pressure of the liquid in the right tube toward the left of the liquid AB. Because in the communicating vessel is filled with a liquid, the same two liquid column density, according to the formula of P= P GH liquid pressure that only when both sides is equal to the height of liquid column, the liquid column is equal to the pressure on both sides of the liquid film AB. Therefore, in the case of no flow of liquid, the liquid level in each vessel of the communicating device shall be kept flat. (ideal model method) the connecting device is characterized in that the liquid level in each container is flat only when the same liquid is contained in the container. If the container is tilted, the liquid in each container is about to begin to flow. One end of the liquid column flows to the lower end of the liquid column and stops flowing until the liquid level in each container is normal. As with rubber tube two glass tubes connected together in container with a liquid, which will be a fixed tube, the other tube up and down or tilt, can see the two tube level in stationary phase remained flat. The connecting device is provided with the same liquid, but the pressure on the liquid surface is unequal, and the pressure difference of the liquid surface is equal to the pressure difference produced by the liquid level difference of the two container of the communicating device.

Q: The rubber is sheathed on a metal cylinder. How should they be connected?: If you describe it, it is recommended that a soft binder such as 704 silicone gel will be used to prevent shock absorption and separation. Metal surface to rust treatment, clean can be coated adhesive, rubber cover surface is best polished, degreasing treatment effect is good!

Q: How to distinguish the true and false corrosion resistant rubber soft joint?: Put the rubber joint in the corrosive liquid which needs to pass. One day, 24h can see that the swelling ratio is not more than 5%!

Q: Is it feasible to use rubber material, middle canvas layer and outer rubber material in PVC rubber tube?: Improvement measures: 1, adjust the process, plastic material in place; mixing rubber plastic stability; vulcanized rubbing with low temperature long time vulcanization; 2, test cloth in curing temperature shrinkage coefficient is too big, consider changing cloth;

Q: What are the methods of sterilizing rubber hoses and Perspex?: It is suggested that osmotic absorption of water can be used to kill bacteria.

Q: How can the rubber tube be used properly and how to use it properly?: The hose burst caused by frequent and severe pressure impact. This situation is not generally under the static pressure caused by too much, but the number and intensity and pressure impact. Engineering machinery in operation, will be repeated in the hydraulic tubing suddenly increased or decreased, which impact on the oil pressure of frequent the damage of the oil seal, resulting in increased, loosening hose leakage and rupture foaming and pipe joint. Therefore, in operation, the valve stem can not be too hard, must be gentle.

Q: How should we distinguish between the silicone hose and the rubber tube?: Smell, silicone no flavor, rubber flavor, silicone general flexibility better, rubber mechanical better

Q: How to make sure the rubber hose will not be worn off?: The sole judgment is as follows at the end of the rubber bottom or tendon tendon end methods: look at the color, color is usually translucent, while the rubber bottom is not.

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