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Silicone Rubber Joint

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- 商品名稱: Silicone Rubber Joint
Silicone Rubber Joint | Plumbing, Ventilation, Water Supply and Drainage | Circulating Water
The product is composed of inner rubber layer, nylon cord fabric, rubber sphere compounded by outer rubber layer and loose metal flange. It has the characteristics of high pressure resistance, good elasticity, large displacement, shock absorption and noise reduction, flexible installation, etc. It can be widely used in water supply and drainage, circulating water, HVAC, papermaking, petrochemical, ships, compressors, pumps, fans and other pipelines system. connector. Before each product leaves the factory, testing items such as sphere appearance, hardness, air sealing, pressure bearing and flange anti-dropping will be carried out.

Silicone rubber joints are composed of fabric-reinforced silicone rubber parts, flat unions, metal flanges or threaded pipe flanges. They are used for pipeline vibration isolation, noise reduction, and displacement compensation joints. It can reduce vibration and noise, and can compensate for thermal expansion and contraction caused by temperature changes. It has the characteristics of acid resistance, alkali resistance, oil resistance, etc. It is easy to install and flexible to use. During use, it can be automatically extended with the natural change of weather (-30°C~ +80°C). Its structural material is made of dipped nylon curtain and cloth. 1MPa guarantees 14-16 layers.
It is made of high-strength anti-aging polar rubber material. In order to prevent the product from shrinking naturally during long-term use and reduce aging cracks, mesh steel wire is used for multi-body protection. This product is widely used in the pipeline system of electric power, water plant, sewage plant, chemical industry, metallurgy and other industries. It is a pipeline joint with high elasticity, high air tightness, medium resistance and weather resistance. Before each product leaves the factory, testing items such as sphere appearance, hardness, air sealing, pressure bearing and flange anti-dropping will be carried out.
Application and characteristics of silicone rubber joint products:
Function: Vibration isolation and noise reduction, displacement compensation of pipeline engineering in protection and governance systems.
Application area: plumbing and ventilation pipes, water supply and drainage and circulating water pipes, etc.
Features:
1. Multi-layer sphere structure, strong vibration absorption ability and good noise reduction effect;
2. Can withstand high working pressure, strong anti-knock force and sufficient elasticity;
3. It can better compensate the displacement of compression, tension and torsion deformation;
4. The flange and threaded joints that can be rotated 360° are used for connection, which makes the installation more convenient and flexible.
Features of silicone rubber joints:
High-quality stainless steel flanges are selected, with no sagging, no trachoma, and no pores.
The flange is sprayed with epoxy resin powder, which has strong adhesion and high impact strength.
The radian of the inner forging surface of the flange is R=67°, and the frictional resistance between the flange and the rubber ball is small, which prevents the ball from being scratched, and the bolt is chamfered to prevent the operator from being scratched.
EPDM rubber spheres are stronger than conventional rubber in terms of tensile strength, compression resistance, aging resistance, high temperature resistance and low temperature resistance.
The number of skeleton layers in the rubber ball exceeds 20% of similar products in the market
The thickness of both ends of the rubber ball is increased by 10MM, and the traveler is added to prevent the ball from pulling off, and it is resistant to twisting, and the seismic coefficient is increased by 10%.
The connecting end face of the rubber ball adopts a dense water line, and the sealing effect is improved by 30%.
Before each product leaves the factory, testing items such as sphere appearance, hardness, air sealing, pressure bearing and flange anti-dropping will be carried out.
Silicone Rubber Joint Product Information:
Flange material: carbon steel galvanized stainless steel 304, 316, etc.
Rim: Q235
Sphere: Silicone rubber SI
Silicone rubber joint technical parameters:
Caliber range: 40MM-2000MM
Nominal pressure: PN10/16/25
Burst pressure: PN48
Vacuum: 750mmHg (DN25-300
500mmHg (DN350-600)
Applicable temperature: -20°C~+120°C
Applicable medium: water, gas, oil, etc.
Application areas: municipal construction, water conservancy engineering, electric power, water supply and drainage, water treatment, chemical industry.
Silicone rubber joint executive standard:
Design and manufacture: GB/T26121
Structure length: GB/T26121
Pressure test standard: GB/T26121
Flange size: GB/T9119
Silicone rubber joint optional configuration:
Flange: Q235, 20# steel, stainless steel 304/316/304L/316L
Ball: EPDM/NBR/Silicone SI
Preparation before installation of silicone rubber joint:
1. Check whether the installed rubber joint is suitable for various media
2. Check the rated temperature, pressure and displacement range of the joint, and be careful not to exceed the pressure allowable
Silicone rubber joint positioning and limit:
1. Make sure the system has supports so the rubber does not bear the weight of the pipe
2. The installation position of the rubber joint should be as close as possible to the pillar point. If there is no pillar point, check whether the limit device is required.
3. When the joint is installed on the piping system fixed on both sides, no limit is required. If one side is not fixed, in order to prevent stretching of the joint at pressures higher than those shown in the table below
A limit device must be added to the rubber joint
Precautions for installation of silicone rubber joints:
1. Ensure that the sealing surface of the rubber joint is flat, clean and meets the requirements
2. Do not use flanges with raised surfaces (see picture below)
3. Place the screw head of the flange towards the rubber ball and the nut towards the pipeline
4. Gradually tighten the screws until the nuts are evenly tightened (see the picture below)
5. Do not over-tighten, otherwise it will damage the sealing surface
6. Don't paint the surface of the sphere
- Silicone Rubber Joint

Size Information	Work scale		L	PN10		PN16		PN25
	DN	NPS（inch）	L	ΦA	ΦB	ΦA	ΦB	ΦA	ΦB
	40	1 1/2"	95	150	110	150	110	150	110
	50	2"	105	165	125	165	125	165	125
	65	21/2”	115	180	145	185	145	185	145
	80	3"	135	200	160	200	160	200	160
	100	4"	150	220	180	220	180	235	190
	125	5"	165	250	210	250	210	270	220
	150	6"	180	285	240	285	240	300	250
	200	8"	210	340	295	340	295	362	310
	250	10"	230	395	350	405	355	425	370
	300	12"	245	445	400	460	410	485	430
	350	14"	255	505	460	520	470	555	490
	400	16"	255	565	515	580	525	620	550
	450	18"	255	615	656	640	855	670	600
	500	20"	255	670	620	715	650	730	660
	600	24"	260	780	725	840	770	845	770