KDF Flanged Single Ball Rubber Joint

Overview

The KDF flanged rubber joint is an improved version of the KXT single-ball rubber joint, designed to accommodate greater displacement and pressure according to user requirements. More importantly, it addresses the issue of rubber joint separation under excessive pressure. The improved large flanged rubber joint features a sealing surface that aligns with the outer diameter of the butt-weld flange, and the sealing surface also includes drilled holes, fully integrating the rubber joint with the pipeline into a single unit, thereby enhancing the stability of the rubber joint's operation. This product features high internal density, can withstand high pressure, and exhibits excellent elastic deformation performance.

The KDF flanged rubber joint is composed of a fabric-reinforced rubber component and a flat flanged joint, designed for pipeline vibration damping, noise reduction, and displacement compensation. It is a high-elasticity, high-airtightness, medium-resistant, and weather-resistant pipeline joint. Strict adherence to standards and raw material quality requirements ensures no shortcuts are taken in production. The raw materials used must not only be new but also of the highest grade.



 

Features

The KDF flanged rubber joint is an improved version of the KXT single-ball rubber joint, designed to accommodate greater displacement and pressure according to user requirements. More importantly, it addresses the issue of rubber joint separation under excessive pressure. The improved large flanged rubber joint features a sealing surface that aligns with the outer diameter of the butt-welded flange, and the sealing surface also includes drilled holes, fully integrating the rubber joint with the pipeline into a single unit, thereby enhancing the stability of the rubber joint's operation. This product features high internal density, can withstand high pressure, and exhibits excellent elastic deformation performance. The rubber joint consists of a rubber component reinforced with fabric and a loose-fitting metal flange, designed for pipeline vibration isolation, noise reduction, and displacement compensation. It is a high-elasticity, high-airtightness, medium-resistant, and weather-resistant pipeline joint. Strictly adhering to standards and raw material quality requirements, we eliminate any shortcuts in production. The raw materials for the product must not only be new but also of the highest grade.

Specification

No.	Part	Material
1	Body	(NR)、(CR)、(IIR)、(NBR)、(FKM)、(EPDM)
2	Inner & Outer Rubber	（NR） （CR）（IIR） （NBR）（FKM）（EPDM）（PTFE）
3	Body Carcass	Nylon cord fabric
4	Reinforcing Ring	Multi-strand coppering steel wire
5	Flange	Cast and forged carbon steel(Q235)、Stainless steel(201、304、316、321)、 Plastic(CPVC、PVDF、PPH、UPVC、RPP)

Item |Medol	KDF-1	KDF-2	KDF-3	A. If media is oil, acid or alkali.  B. If special requirements for working temperature  C. If OEM orders with drawings or samples  D. Please Inform us about above when ordering
MpaWoring pressure Mpa（kgf/cm2）	1.0(10)	1.6(16)	2.5(25)
Mpa Burst Pressure Mpa（kgf/cm2）	2.0(20)	3.0(30)	4.5(45)
Kpa Vacuum  Kpa（mm/Hg）	53.3(400)	86.7(650)	100(750)
Applicable Temperature ℃	-20℃~+115℃(-30℃~+250℃ under special conditions)
Applicable Medium	Air, compressed air, water, sea water, oil, acid, alkali, etc.
Note: the materials of main parts are the same with those of KXT type

DN Nominal Diameter （mm）		LengthLmm	Axial displacement mm		Haorizontal isplacement mm	Angular deflection(a1+a2)°
mm	inch		Extension	Compression
32	1.25	95	6	9	9	15
40	1.5	95	6	10	9	15
50	2	105	7	10	10	15
65	2.5	115	7	13	11	15
80	3	135	8	15	12	15
100	4	150	10	19	13	15
125	5	165	12	19	13	15
150	6	180	12	20	14	15
200	8	210	16	25	22	15
250	10	230	16	25	22	15
300	12	245	16	25	22	15
350	14	255	16	25	22	15
400	16	255	16	25	22	15
450	18	255	16	25	22	15
500	20	255-320	16	25	22	15
600	24	260-350	16	25	22	15
700	28	260-350	16	25	22	15
800	32	260-350	16	25	22	15
900	36	260-350	16	25	22	15
1000	40	260-350	18	26	24	15
1200	48	260-550	18	26	24	15
1400	56	350-550	20	28	26	15
1500	60	350-550	20	28	26	15
1600	64	350-550	25	35	30	10
1800	72	350-550	25	35	30	10
2000	80	350-550	25	35	30	10
2200	88	400-550	25	35	30	10
2400	96	400-550	25	35	30	10
2600	104	400-550	25	35	30	10
2800	112	400-550	25	35	30	10
3000	120	400-500	25	35	30	10
3200	120	400-500	25	35	30	10
3400	120	400-500	25	35	30	10
3600	120	400-500	25	35	30	10
3800	120	400-500	25	35	30	10
4000	120	400-500	25	35	30	10
Notes:1. For OEM orders with special requirement, rubber joints can be made according to customers' drawings. Generally,  other GB, JB, HG, CB, ANSI, DIN, BSEN, NF, EN, JIS, flanges are also available upon request. Material of rubber body can be NR natural rubber, EPDM, Neoprene, IIR butyl rubber, NBR Buna-N, FKM, etc. 2.When rubber joints size above DN200 are used for overhead water supply system, the pipes must be equipped with fixed supports or fixed brackets, otherwise control units shall be installed on rubber joints. 3.Matching flanges of rubber joints shall be valve flanges.