1 1/4''-2'' Thread Connection Rubber Expansion Joint
1 1/4''-2''
This threaded rubber expansion joint, available in 1 ¼” to 2” NPT or BSP sizes, is designed to absorb vibration, reduce noise, and compensate for pipe movement in compact piping systems. Its one-piece molded EPDM or Neoprene body, reinforced with synthetic fabric, delivers reliable performance at temperatures from -20°F to 180°F and pressures up to 230 PSI. The threaded design eliminates flanges and welding, enabling quick installation and easy maintenance while resisting corrosion and scale buildup. Ideal for HVAC, pump connections, compressed air, and industrial water systems, each unit is hydrostatically tested to meet ISO and ASTM quality standards, with custom options available upon request.
Delivery
EXW
minimum order
3 pieces
Supply Ability
100pieces / Month
Country of Origin
China
Stock Time
10Day
Quantity:
US $20.00 - US $200.00 / pieces
Product Description
Our Rubber Expansion Joint with threaded connections is specifically engineered for small-bore piping systems that demand effective vibration absorption, noise reduction, and compensation for pipe movement. Designed with a focus on durability and installation convenience, this joint delivers a reliable, leak-free performance across a broad spectrum of industrial, commercial, and HVAC applications.
The threaded end connections are precision-machined to accept standard male pipe fittings, available in sizes 1 ¼”, 1 ½”, and 2” with either NPT or BSP thread standards. This threaded design eliminates the need for flanges or welding, significantly simplifying both initial installation and subsequent maintenance procedures.
Constructed from high-quality EPDM or Neoprene rubber compounds, the one-piece molded body offers outstanding resistance to water, mild chemicals, ozone, and weathering. Embedded within the rubber are high-tensile synthetic fabric or cord reinforcement layers, which provide superior pressure-bearing capacity while preserving the flexibility required for axial, lateral, and angular deflection. This combination of materials ensures a long service life even under continuous dynamic conditions.
Compared to traditional flanged joints, the threaded configuration is notably compact and lightweight, making it an ideal choice for installations with limited space or for retrofit projects where weight reduction is a priority. The joint operates effectively within a temperature range of -20°F to +180°F (-29°C to +82°C) and can handle working pressures up to 230 PSI, depending on the specific size and rubber compound selected. These parameters make it suitable for most water, oil, and air handling systems.
In terms of performance, this expansion joint excels at damping mechanical vibrations generated by pumps, compressors, and chillers, thereby reducing structural noise transmission and protecting downstream equipment from excessive wear. It also effectively absorbs pipe expansion, contraction, and minor misalignment, which relieves stress on connected piping and fittings, ultimately extending the overall system life. The non-metallic construction eliminates concerns over rust and scale buildup, ensuring clean fluid flow and reducing maintenance frequency.
Typical applications include HVAC chilled water and hot water systems, pump suction and discharge lines, cooling towers, air handling units, compressed air systems, industrial process piping carrying water or mild chemicals, as well as fire protection and irrigation networks.
From a technical standpoint, the standard body material is EPDM, with Neoprene and Nitrile available as options for specialized media compatibility. The reinforcement consists of multiple layers of synthetic fabric cord, and the threaded inserts are available in galvanized steel or stainless steel for enhanced corrosion resistance. The joint can also withstand a vacuum rating of 20” Hg when equipped with an optional steel ring support.
All units are manufactured under strict quality control procedures in accordance with ISO 9001 standards, and each joint is hydrostatically tested to guarantee zero leakage and full compliance with ASTM and ASME guidelines. Custom compounds, alternative thread types, and modified pressure ratings can be accommodated upon request.
For ordering, please specify the required size, thread standard (NPT or BSP), rubber compound, and any special pressure requirements. Standard lead time is two to three weeks, with stock items available for immediate shipment. For detailed dimensional drawings or engineering assistance, our technical sales team is ready to provide support.
