Expansion Joint "EP Joint" [RM Type]

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EP Joint RM Type

last updated：Mar 26, 2019

内外ゴム

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Low pressure type! Absorbs vibrations, noise, expansion, and displacement in piping systems! Protects connection points around FRP tanks and is effective in vibration prevention for low-pressure pumps and blowers!

Expansion joints (rubber joints) are used for preventing vibrations and noise generated from piping systems, absorbing expansion and displacement due to temperature and pressure changes, as well as accommodating various dimensional fluctuations during construction and mitigating or preventing the effects of earthquakes and ground subsidence. They are considered essential components in piping installations. The E-P joint was launched in 1970 (Showa 45) as a low-pressure R type for elevated water tanks, and since then, it has added new products to meet customer needs, including the high-pressure P type integrated product F type with PTFE. Today, it is used by a wide range of customers across various industries, from household drinking water to chemical plant piping. 【Features】 1. Low deformation stress, suitable for vibration damping and expansion absorption in low-pressure plastic piping. 2. Excellent installation work due to the use of loose flanges. For more details, please contact us or refer to the catalog.

Related Link - http://www.naigai-rubber.co.jp/prdct/factory/joint…

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basic information

【Features】 ○Vibration Damping Effect → The E-P joint with a small spring constant is effective for vibration damping measures. ○Displacement Absorption → Excellent elasticity and shape recovery. → Absorbs displacements such as eccentricity, angular deviation, and expansion, protecting the piping. ○Easy Installation → Lightweight and compact, no packing required. → The loose type flange makes installation easy. ○Composite Effect → Vibration damping effect and displacement absorption can be achieved simultaneously. ● For more details, please contact us or refer to the catalog.

Price information

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Delivery Time

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Applications/Examples of results

Protection of connection parts around FRP tanks Vibration isolation for low-pressure pumps, blowers, etc. ● For more details, please contact us or refer to the catalog.

Line up（14）

Model number	overview
High Pressure SP Type	Minimal change in spacing due to internal pressure, excellent pressure resistance. Used in air conditioning systems, water supply and drainage sanitary equipment, etc.
Ball Flex	Excellent vibration absorption. Due to the use of loose flanges, it excels in installation work. Used in air conditioning systems, water supply and drainage sanitary equipment, etc.
Cylindrical S Flex	Can accommodate large eccentricities. Due to the use of loose flanges, it excels in installation work. Used in air conditioning systems, water supply and drainage sanitary equipment, etc.
Cylindrical SL Flex	Can accommodate large eccentricities. Due to the use of loose flanges, it excels in installation work. Used in air conditioning systems, water supply and drainage sanitary equipment, etc.
Low Pressure R Type	Small deformation stress, suitable for vibration isolation and expansion absorption of low-pressure resin piping. Due to the use of loose flanges, it excels in installation work. Used for protecting connection points around FRP tanks and for vibration isolation of low-pressure pumps and blowers.
Low Pressure RM Type	Small deformation stress, suitable for vibration isolation and expansion absorption of low-pressure resin piping. Due to the use of loose flanges, it excels in installation work. Used for protecting connection points around FRP tanks and for vibration isolation of low-pressure pumps and blowers.
Pressure A1 Flex	Excellent vibration isolation effect. Due to the use of loose flanges, it excels in installation work. Used for vibration isolation of pumps and blowers in factory equipment.
Pressure P Type	Most versatile in the lineup. Durable and stable due to the combination of strong reinforcing fibers and steel wires. EPDM is used for the inner and outer rubber, providing excellent chemical resistance and weather resistance. Due to the use of loose flanges, it excels in installation work. Used for vibration isolation of general-purpose pumps and blowers in factory equipment and for expansion absorption of heat-resistant resin piping.
Pressure PL Type	Has a larger allowable displacement than the P type. Durable and stable due to the combination of strong reinforcing fibers and steel wires. EPDM is used for the inner and outer rubber, providing excellent chemical resistance and weather resistance. Due to the use of loose flanges, it excels in installation work. Used for expansion and displacement absorption in factory equipment piping and water supply and drainage equipment piping.
Pressure PB Type	No fluid or residue remains inside the product. Due to the use of loose flanges, it excels in installation work. Used for vibration isolation of general-purpose pumps and blowers in factory equipment and for expansion absorption of heat-resistant resin piping.
Low Pressure (Inner PTFE) RF Type	Uses PTFE on the liquid contact surface, providing excellent chemical resistance. Improved durability due to integration with rubber that has excellent durability and strength. Used for corrosive chemical piping in chemical plants, oil, solvent, and food transfer piping, pure water piping in IC factories, vibration isolation of corrosion-resistant pumps, and piping for hot water and pool water.
Pressure (Inner PTFE) PF Type	Uses PTFE on the liquid contact surface, providing excellent chemical resistance. Improved durability due to integration with rubber that has excellent durability and strength. Used for corrosive chemical piping in chemical plants, oil, solvent, and food transfer piping, pure water piping in IC factories, vibration isolation of corrosion-resistant pumps, and piping for hot water and pool water.
Super Flexible (Inner PTFE) SF Type	Uses PTFE on the liquid contact surface, providing excellent chemical resistance. Improved durability due to integration with rubber that has excellent durability and strength. Used for corrosive gas piping in chemical plants and similar applications.
Flexible Joint G Flex	Absorbs large displacements with relatively short spacing dimensions. Can absorb displacements in all directions, making it suitable for vibration-resistant applications. No fluid or residue remains inside the product. Used in air conditioning systems, water supply and drainage sanitary equipment, decoupling structures from piping, seismic protection for tanks and piping systems, and protection of pipelines in soft ground.