Single Sphere Rubber Expansion Joint

1) Designed according to ANSI, DIN and BS

2) Type: Single sphere joint flange type

3) Main body: EPDM, NBR, neoprene

4) Lining: Chinlon cord fabrics

5) Frame: Hard steel wires

6) Flange: Carbon steel, stainless steel

7) Union: Malleable iron

8) Size: 1/2″ to 24″

Product Description

Description

The Single Sphere Rubber Expansion Joint is designed to absorb vibration, reduce noise, and compensate for thermal expansion or contraction in piping systems. Featuring a compact and highly flexible design, it is ideal for use in HVAC systems, water pipelines, industrial processing lines, and pump installations.

Manufactured from high-quality EPDM or NBR rubber and reinforced with multi-ply synthetic fabric and steel rings, the single sphere rubber expansion joint offers excellent resistance to pressure, temperature, and chemical exposure. Its spherical structure allows for superior movement capabilities in all directions, including axial compression, elongation, and lateral deflection.

This expansion joint is widely used in municipal water supply, sewage treatment plants, building piping networks, and chemical processing facilities. It helps protect sensitive equipment such as pumps, valves, and meters by reducing stress caused by thermal and mechanical movement.

The flanges are typically made of carbon steel or stainless steel, conforming to international standards such as ANSI, DIN, or JIS. Available in sizes ranging from DN32 to DN1200, the single sphere rubber expansion joint is a trusted solution for ensuring flexible, long-lasting, and maintenance-friendly pipeline connections.

As one of China’s leading manufacturers of rubber joints and pipeline accessories, we provide durable, tested, and globally certified products to meet your project needs.

Standard of Implementation

Category	Details
Type	Flange
Face to Face	API609, BS5155, DIN3202, ISO5752
Flange	DIN, BS, UNI, ISO, ANSI, AS, JIS
Mounting Flange	ISO5211
Working Pressure	PN16 (200PSI)
Application	HVAC, Water Supply & Sewage, Food & Beverage, Chemical/Petrochemical Processing, Power and Utilities, Paper and Pulp, Ship Building

Standard Materials Of Main Parts

NO	PART NAME	MATERIAL
1	Sphere	EPDM/NBR
2	Flange	CS Coated With Zinc

Dimensions:(mm)

SIZE		L	Pn16			Pn10			ANSI150
in	DN	L	D	D1	n-d1	D	D1	n-d1	D	D1	n-d1
1.25	32	95	140	100	4-18	140	100	4-18	117	89	4-16
1.5	40	95	150	110	4-18	150	110	4-18	127	98.5	4-16
2	50	105	165	125	4-18	165	125	4-18	152	120.5	4-19
2.5	65	115	185	145	4-18	185	145	4-18	178	139.5	4-19
3	80	135	200	160	8-18	200	160	8-18	191	152.5	4-19
4	100	150	220	180	8-18	220	180	8-18	229	190.5	8-19
5	125	165	250	210	8-18	250	210	8-18	254	216	8-22
6	150	180	285	240	8-23	285	240	8-23	279	241.5	8-22
8	200	210	340	295	12-23	340	295	8-23	343	298.5	8-22
10	250	230	405	355	12-17	395	350	12-23	406	362	12-25
12	300	255	460	410	12-17	445	400	12-23	483	432	12-25
14	350	255	520	470	16-27	505	460	16-23	533	476	12-29
16	400	255	580	525	16-30	565	515	16-27	597	539.5	16-29
18	450	255	640	585	20-30	615	565	20-27	635	578	16-35
20	500	255	715	650	20-33	670	620	20-27	699	635	20-32
24	600	260	840	770	20-36	780	725	20-30	813	749.5	20-35

Tianjin Guoji Valve Co., Ltd. is an export-oriented valve manufacturer with 15,332 square meter factory area, which has strong capability of R&D, Manufacture, Trading and Service. Now our company has passed the Lloyd's Register (LR) ISO9001: 2015 quality management system certification (ISO Approval number: ISO 9001 – 00033059) and CE/PED certification (EU Certificate Of Conformity). (Certificate No: 0343/PED/SHA/BJG00001668/A).
TGV's products covered Butterfly valves, Check valves, Strainers, Gate valves, Ball valves, Globe valves, Expansion joints, Flanges and Fittings with pressure range from 0.5 to 6.4 MPa, size from DN15 to DN3000. The products also have been widely exported to more than 30 countries and regions.
We aim at deliver only quality valves with professional services, we see quality and service as life and always take our reputation and promises seriously.