Iwaki 23023 Poppet Valve – EPDM Replacement for Bellows Metering Pumps
If you run an Iwaki bellows pump and it's started losing prime, dripping between strokes, or just not delivering the steady output it used to, the poppet valve is usually the first place to look. The Iwaki 23023 is the EPDM version of this small but essential check valve, built to hold a tight seal on both the intake and discharge sides of the pump head so every stroke pushes fluid in the right direction and nowhere else.
This valve is designed to work with Iwaki's SP, DP, and KBR bellows pump series, as well as compatible GRI 1600X and 162XX series pumps that use the same 1/2" bellows configuration. EPDM construction makes it a solid general-purpose choice for water-based chemistries, making it a common fit in photographic processing, plating lines, water treatment, and general chemical metering applications. For fluids that call for broader chemical resistance, the Viton version of this same valve (Iwaki 23070) is also available.
Because this is a wear part that sees constant flexing and contact with process fluid, it's one of the more common maintenance items on a bellows pump. Keeping a spare on hand, or replacing it proactively during routine service, helps avoid unplanned downtime and keeps dosing accuracy consistent over the life of the pump.
Key Features
- OEM-style poppet valve design for precise check-valve sealing
- EPDM material for reliable performance with water-based fluids
- Engineered for consistent, drip-free metering pump operation
- Direct fit for Iwaki bellows pump models using 1/2" bellows
- Simple drop-in replacement for routine pump maintenance
Applications
- Chemical metering and dosing systems
- Photographic and film processing equipment
- Electroplating and plating line fluid transfer
- Water and wastewater treatment dosing
- Medical and laboratory fluid handling equipment
Specifications
- Part Number: 23023
- Type: Poppet Valve
- Material: EPDM
- Bellows Compatibility: 1/2" bellows
- Compatible Pump Series: Iwaki SP80, DP80, KBR, and compatible GRI 1600X/162XX series pumps
- Alternate Material Option: Viton (Iwaki 23070)
- Connection I.D.: Sized to match Iwaki SP/KBR bellows pump tubing (approx. 9-12 mm depending on model)
Frequently Asked Questions
Q: How do I know if my poppet valve needs to be replaced?
A: Common signs include reduced or inconsistent flow output, loss of prime, fluid dripping from the pump head between strokes, or a noticeable drop in dosing accuracy.
Q: Is the Iwaki 23023 compatible with my specific pump model?
A: It is designed for Iwaki SP80 and DP80 bellows pumps as well as KBR series pumps, and it also fits compatible GRI 1600X and 162XX series units that use the same 1/2" bellows.
Q: What's the difference between the 23023 and the 23070 valve?
A: They are the same poppet valve design in different materials. The 23023 is EPDM, while the 23070 is Viton, which offers different chemical compatibility depending on the fluid being pumped.
Q: How often should this valve be replaced?
A: Replacement frequency depends on duty cycle and the fluid being pumped, but many users include it as part of routine preventive maintenance rather than waiting for failure.
Q: Can I install this valve myself?
A: Yes, the poppet valve is a user-serviceable component on Iwaki bellows pumps and is typically accessible without needing to fully disassemble the pump head.
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