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PTFE Joint Expansion Rubber With Food Grade DN50-DN800

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PTFE Joint Expansion Rubber With Food Grade DN50-DN800

Country/Region	china
City & Province	shijiazhuang hebei

Product Details

PTFE Joint Expansion Rubber With Food Grade DN50-DN800

Our PTFE expansion joints are made from the synthetic material Polytetrafluoroethylene, the non reactive material is widely used in pipelines
within the chemical manufacturing industry, acting as a protective agent against corrosive substances.

PTFE Polytetrafluoroethylene also has less surface friction than rubber, which means that flow can be improved by using PTFE hoses.
While rubber is prone to break down at extreme temperatures, PTFE is highly temperature resistant, making it ideal for all kinds of industries.

The PTFE liner serves as a primary skin to the fluid being transferred while the body of the rubber or metal expansion joint serve as a
secondary measure to prevent leakage from the joint. The PTFE also gives metal joints added protection against corrosion by keeping
the liquid away from the metal convolutions.

Material of main Spare Parts

Cover	EPDM, NBR, Hypalon, NR, PTFE
Reinforcing Fabric	Nylon
Tube	EPDM, NBR, Hypalon, NR, PTFE
Retain Rings	Steel
Flange	Carbon Steel, Stainless Steel, Duplex SS

Supplying Scope

Size Range	DN50-DN800
Pressure Range	PN10 PN16 PN25 for rubber
Pressure Range	PN10, PN16, PN25, PN40, PN64, PN100 for metal bellow type

Design Pressure

Working Pressnre(Bar)	10	16	25
Burst pressure(Bar)	30	48	55
Vacuam(mmHg)	400	650	750

Technology/ Technical Data Sheets

Spherical Single Sphere Rubber Expansion Joint

Dimension for Rubber joint PN16

Nominal diameter DN		Length L( mm)		NO.of bolt ⁿ	Flange Holes Dia.	Dia. Of bolt Circle	Axial displacement (mm)		Lateral displacement	Angle of deflection
(mm)	(in)	Length L( mm)		NO.of bolt ⁿ	Flange Holes Dia.	Dia. Of bolt Circle	Stretch	Compression	Lateral displacement	Angle of deflection
32	11/4	95		4	17.5	100	6	9	9	15°
40	11/2	95		4	17.5	110	6	10	9	15°
50	2	105		4	17.5	125	7	10	10	15°
65	21/2	115		4	17.5	145	7	13	11	15°
80	3	135	130	8	17.5	160	8	15	12	15°
100	4	150	135	8	17.5	180	10	19	13	15°
125	5	165	160	8	17.5	210	12	19	14	15°
150	6	180	185	8	22	240	12	20	22	15°
200	8	190	200	8	22	295	16	25	22	15°
250	10	230	240	12	22	350	16	25	22	15°
300	12	245	260	12	22	400	16	25	22	15°
350	14	265		16	26	460	16	25	22	15°
400	16	265		16	26	515	16	25	22	15°
450	18	265		20	26	565	16	25	22	15°
500	20	265		20	30	620	16	25	22	15°
600	24	265		20	26	725	16	25	22	15°
700	28	260		24	30	810	16	25	22	10°
800	32	260		24	30	920	16	25	22	10^u
900	36	260		24	30	1020	16	25	22	10^w
1000	40	260		28	30	1120	16	25	22	10°

Dimension of Rubber joint 150LBS

Nominal diameter DN		Length L(mm)		b	NO.of bolt	Dia. Of Flange holes	Dia. Of Bolt Circle. PCD	Axial displacement		Lateral displacement	Angle of deflection
								Axial displacement
								mm
(mm)(in)		L1	L2					stretch	Compression
25	1	152	130	14	4	16	79.4	+9.5	13	±13	±15°
32	1 1/4	152	130	16	4	16	89	+9.5	13	±13	±15°
40	1-1/2	152	130	16	4	16	98.5	+9.5	-13	±13	±15"
50	2	152	130	16	4	19	121	+9.5	13	±13	±15"
65	2-1/2	152	130	18	4	19	139.5	+9.5	-13	±13	±15
80	3	152	130	18	4	19	153	+9.5	-13	±13	±15°
100	4	152	130	18	8	19	190	+9.5	16	±13	±15°
125	5	152	130	20 22	8	22.5	216	+9.5	-16	±13	±15°
150	6	152	130	20 22	8	22.5	242	+9.5	-16	±13	±15°
200	8	152	130	22	8	22.5	298	+9.5	-16	±13	±15°
250	10	203	130	24	12	25.5	362	+13	16	±19	±15°
300	12	203	130	24	12	25.5	432	+13	19	±19	±15°
350	14	203	200	26	12	28.5	476	+13	-19	±19	±15°
400	16	203	200	28	16	28.5	540	+13	-19	±19	±15°
450	18	203	200	30	16	32	578	+13	-19	±19	±15°
500	20	203	200	30	20	32	634	+13	-19	±19	±15°
600	24	254	260	32	20	35	749.5	+13	-19	±19	±15°
800	32	254	260	36	24	30	920	+13	-19	±19	±15°

FEATURES

Absorb Axial movements (extension and compression).
Axial movement is the change in dimensional length of the bellows from its free length in a
direction parallel to its longitudinal axis.

Absorb Lateral movements.
Lateral movement is the relative displacement of one end of the bellows to the other end in a direction perpendicular to its longitudinal axis.

Absorb Angular and Torsional Movements.
Angular movement is the rotational displacement of the longitudinal axis of the bellows toward a point of rotation. Torsion refers to twisting one
end of the bellows with respect to the other end, about the bellows centerline.

Reduce Vibration.
Rubber expansion joints isolate or reduce vibration caused by equipment. The transmission
of vibration is reduced and they protect equipment from these adverse effects

Dampen Sound Transmission.
Rubber expansion joints tend to dampen transmission of sound because of the steel rubber interface of joints and mating flanges.

Manual and Install Notes of the Rubber Joint

1, The installation of expansion joints shall be in accordance with the expansion of piping construction drawings and installation instructions requested

2, Install expansion joint of the pipeline must be approx. to increase fixed by the orientation

and expansion joints can be made to play a role, so orientation and fixation of the settings must be in strict accordance with the design departments of the technical information. For orientation, the principle of setting a fixed support, please see "Bellows Expansion joints Installation Guide."

3, With a bellows expansion joint is formed with a thin stainless steel plate, so lost in moving, hoisting and welding should be careful not to hit the period, scratch, arc,weld spatter and other reasons to bellows damage

4, Should be removed before installation and piping bellows foreign body to ensure normal movement bellows

5, On a flow of media requests for expansion joint should be required to install the flow arrows

6, In order to make bellows in good working condition,can not install expansion joints in the deformation, including axial, lateral, turn transfer pipe installation error

7, Expansion joints installed, running in the system before moving to remove all painted yellow lose a fixed screw

8, Fabric fiber expansion joint is not subject to the tensile displacement due to the installation to the proper conduct of the pre-compression, the pipeline can not deflection, displacement and axial extension, should be noted that flexible ring of protection against scratches, installed as soon as possible to dismantle support board, so that in normal working condition

Application:

Oil & gas, Desalination, Cooling systems, Pumps, Chemical plants, Heating, ventilating
and air conditioning, Shipbuilding, Off-shore applications, Water treatment plants
Sewage, Sanitary piping systems, Pulp and paper plants, Piping systems for chilled or hot water, Cooling systems power generation, Phosphate plants, Potable water, Food process

Contact Us

SHIJIAZHUANG DEYE PIPING INDUSTRY CO., LTD（Pipefittings Department)

PTFE Joint Expansion Rubber With Food Grade DN50-DN800

Product Details

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