Overview
The Proco 240-M EPDM flexible expansion joint is a molded rubber coupling designed for industrial piping systems. With EPDM tube and cover (Type EE) construction, this 2″ diameter unit carries a 150lbs ASA pressure rating. The Style 240 series combines single-sphere spherical arch design with nylon tire cord reinforcement, enabling reliable absorption of thermal expansion, compression, lateral deflection, and angular pipe movements while reducing vibration transmission to connected equipment.
Key Features
- EPDM elastomer tube and cover (Type EE) — chemical-resistant, FDA-compliant material suitable for food and beverage, water treatment, and industrial fluid transfer
- 2″ nominal pipe size with 150lbs (ASME Class 150) pressure rating
- Single-sphere molded design distributes internal pressure evenly, reducing turbulence and sediment buildup
- Nylon tire cord reinforcement provides durability in high-cycle applications
- Absorbs axial, lateral, and angular deflection — no rigid supports required
- Effective vibration and noise isolation for rotating equipment protection
Technical Specifications
| Specification | Value |
| Manufacturer | Proco Products |
| Model / Style | 240-M |
| Nominal Pipe Size | 2″ |
| Pressure Rating | 150 lbs ASA (ANSI Class 150) |
| Elastomer Type | EPDM (Tube & Cover, Type EE) |
| Material Identification | Red |
| Maximum Temperature | 250°F (continuous service); 300°F blower service at ≤20 PSI |
| Reinforcement | Nylon Tire Cord |
| Standards Compliance | ASTM F-1123; ANSI Class 150 |
| Connection Type | Flanged (threaded or smooth drilled bolt holes) |
| Design Type | Single-Sphere Molded Expansion Joint |
Typical Applications
- Piping systems: Compression, extension, and lateral movement compensation in hot water, steam condensate, and chilled water loops
- Pump and compressor isolation: Vibration damping and shock absorption on discharge and suction lines
- Industrial equipment: Protection of downstream piping from start-up surge forces and thermal stress
- Food & beverage processing: FDA-compliant EPDM elastomer for potable water, milk, and juice handling systems
- Air and compressed gas distribution: EPDM blower service up to 300°F at low pressure
- Water treatment and municipal systems: Corrosion-resistant rubber core for salt water and mineral-bearing applications
Compatibility & Replacements
Compatible With
- 2″ ANSI Class 150 flanged piping systems (slip-on, socket weld, or threaded flanges)
- Standard industrial pump and compressor discharge lines
- Thermal and mechanical expansion relief systems
- Systems requiring ASTM F-1123 compliance
- Applications rated up to 150 psi / 250°F continuous service
Replaces / Drop-In Replacement For
- Other Proco Style 240 variants in 2″ size with EPDM (EE) designation
- Competitive molded rubber expansion joints with equivalent 150lbs ASA ratings and 2″ connections
- Note: Verify exact flange bolt pattern and facing (RTJ, flat, raised) before ordering as a direct replacement
Works With
- ANSI/ASME B16.1 Class 150 carbon steel and stainless steel flanges
- Standard industrial bolting: carbon steel hex cap screws or stud bolts per ANSI B18.2.1
- Piping support and restraint devices (hangers, guides, anchors) to manage axial and lateral loads
- Limit rod and rod-and-clevis control units for axial movement containment
- Standard gasket materials (asbestos-free EPDM, nitrile, or cork-rubber) where applicable








