Overview
The Goyen K2003 diaphragm repair kit (also referenced as M1174B) provides a genuine OEM replacement solution for maintaining and repairing 3/4″ CA/RCA20 pulse valves commonly found in dust collection, pneumatic automation, and industrial filtration systems. This single-unit kit contains all components needed for a complete diaphragm replacement, restoring valve responsiveness and seal integrity without requiring full valve replacement.
Key Features
- Buna-N diaphragm material with 180°F temperature rating
- Composed of one Buna seat diaphragm and one stainless steel spring
- Includes five-hole circular diaphragm design for optimal flow control
- Genuine Goyen part ensures perfect fit and reliable performance
- Direct replacement—no modifications or adapters required
- Oil-resistant material suitable for standard pneumatic applications
Technical Specifications
- Goyen Part Number: K2003
- Alternative Part Number: M1174B
- Diaphragm Material: Buna-N
- Temperature Rating: 180°F
- Weight: 0.07 lbs
- Dimensions: 4.5 x 6 x 0.5 in.
- Valve Size: 3/4″
- Quantity: 1 kit per package
- Material composition: Nitrile (NBR), oil-resistant
Typical Applications
The K2003 repair kit is used in industrial environments requiring reliable diaphragm pulse valve maintenance, including:
- Dust collection and air filtration systems
- Pneumatic control valve assemblies
- Compressed air distribution networks
- Industrial automation pulse jet valve systems
- Manufacturing and material handling equipment
Compatibility & Replacements
Compatible With
- Goyen 3/4″ diaphragm valves RCA20M
- Goyen CA/RCA20 valve series
- RCA20MM and CA20MM cross references
- G-20M valve assemblies
- Standard 3/4″ pulse valve manifold systems
Replaces / Drop-In Replacement For
- Goyen RCA20M 3/4″ pulse valve (diaphragm only)
- Goyen RCA20T valve diaphragm assembly
- Goyen RCA20DD diaphragm replacement
- Original Goyen M1174B kit
Works With
- Goyen pneumatic valve control systems
- Dust collection PLC automation platforms
- Compressed air flow control networks
- Industrial filtration and baghouse systems
- Standard 3/4″ NPT threaded valve ports






