NBR Pn16 Carbon Steel Double-Ball Rubber Connect Flexible Expansion Joint

• Customization: Available
• After-sales Service: 7*12hours
• Connection: Flange
• Model NO.: Rubber Expansion Joint
• Kind: Corrugated Compensator
• Type: Axial
• Head Code: Round
• Material: Aluminum Plastic
• Surface Treatment: Galvanized
• Customized: Customized
• Certification: CE, ISO14001, JIS, ISO9001
• Application: Electricity
• Name: Rubber Expansion Joint
• Size: Customized
• Installation Length: Standard Length Between Flange End Faces
• Flange Standard: Adaptable Standards (e.g., GB, ANSI, DIN, JIS)
• Accessories Configuration: Inclusion of Bolts, Nuts, and Sealing Gaskets
• Special Coating: Anti-Corrosion Flange Coating
• Displacement Compensation Capacity: Axial Expansion/Contraction Range, Lateral Deflect
• Transport Package: Wooden Case Packing
• Specification: DN100-500
• Trademark: XINCHENG
• Origin: China
• HS Code: 401699
• Production Capacity: 1000000PCS/Years

Product Description

Product Description

Vulcanized Double Ball Flange Rubber Expansion Joint

Our Vulcanized Double Ball Flange Rubber Expansion Joint is a high-performance pipeline connection accessory engineered for industrial fluid systems. Crafted from premium elastic rubber (NBR/EPDM optional) and reinforced with a vulcanized double-ball structure, it delivers exceptional pressure resistance (up to PN40) and flexibility—effectively absorbing axial/lateral/angular displacement caused by thermal expansion, pipeline vibration, or foundation settlement.
 
The integrated flange design enables quick, tool-free installation, while the vulcanized sealing structure ensures long-term leak-proof operation (suitable for water, oil, gas, and mild chemical media). Its robust construction enhances fatigue resistance, extending service life by 30% compared to single-ball alternatives.
 
Widely applied in water supply, HVAC, chemical, and power plant pipelines, this expansion joint supports custom sizes (DN50-DN300) and comes with ISO/CE certifications. As a factory-direct supplier, we provide strict quality testing and 2-year after-sales support, making it a reliable choice for industrial pipeline systems.

Nominal Diameter		Type A		Movements (Type A)			Type B		Movements (Type B)
DN	NPS	Neutral (L)	Ext.	Comp.	Lateral.	Angular (°)	Neutral (L)	Ext.	Comp.
40	1½	175	30	50	45	35°	150	10	20
50	2	175	30	50	45	35°	150	10	20
65	2½	175	30	50	45	35°	150	10	20
80	3	175	30	50	45	35°	150	10	20
100	4	225	35	50	40	35°	200	15	30
125	5	225	35	50	40	35°	200	15	30
150	6	225	35	50	40	35°	200	15	30
200	8	325	35	50	35	30°	200	20	40
250	10	325	35	60	35	30°	200	20	40
300	12	325	35	60	35	30°	200	20	40
350	14	-	-	-	-	-	225	20	40
400	16	-	-	-	-	-	225	20	40
450	18	-	-	-	-	-	260	25	45
500	20	-	-	-	-	-	260	25	45
600	24	-	-	-	-	-	260	25	45