The Caleffi F69590 is a replacement internal cartridge for Caleffi 668S1-series TwistFlow manifolds, renewing the loop regulating internals without replacing the manifold body.
Product data compiled from Caleffi North America technical documentation (01170 NA, 01155 NA). Last reviewed July 2026.
Key Features
Regulating Cartridge Renewal
Replaces the internal regulating cartridge on a 668S1 manifold outlet, restoring smooth balancing action.
EPDM and Stainless Internals
Peroxide-cured EPDM seals and stainless spring match the original manifold internals.
No Manifold Replacement
Service the outlet in place instead of replacing the manifold body.
Technical Data
| Function | Manifold / mixing station service part |
|---|---|
| Part | Regulating cartridge, 668S1 manifold outlet |
| Seals | Peroxide-cured EPDM; stainless spring |
Documentation
Related Products
Frequently Asked Questions
The internal regulating cartridge on a 668S1-series TwistFlow manifold outlet, restoring smooth flow-balancing action.
If an outlet's regulating action becomes stiff, leaks at the stem, or no longer holds its setting.
- Type:
- Accessory