Description
Original Diffuser with Venturi Tube for Pedrollo JCR 1 / JCRm 1 Pumps (121001 / 121065)
The original hydraulic diffuser assembly with nozzle and Venturi tube (factory codes 121001 / 121065) is the central operating element of Pedrollo JCR series self-priming centrifugal pumps and pump stations based on them. The hydraulic unit performs the task of converting the kinetic energy of the flow from the impeller into static pressure, and also provides a stable Venturi effect (ejection) for lifting water from depths of up to 9 meters and rapid automatic air removal from the suction line.
Key Advantages and Features:
- Original Pedrollo OEM (Italy): High-precision factory molding guarantees a perfect match for the flow channel geometry, maintaining the pump's nominal head and performance characteristics.
- Food-grade Noryl FE1520PW technopolymer: The body is made of glass-fiber reinforced polyphenylene oxide, which is neutral to drinking water, withstands the hydro-abrasive impact of fine sand, and is resistant to cavitation wear.
- Optimal hydrodynamics: Smooth radii of the internal diffuser vanes reduce flow turbulence, preventing overheating of the pump part and a drop in operating pressure.
- Full interchangeability: Standardly designed to fit into the pump chamber of first-generation JCR models with a 120 mm diameter impeller.
Compatibility and Application:
Used in Pedrollo self-priming surface pumps with a stainless steel body (produced mainly until 2016), as well as in pump stations based on them:
- Pedrollo single-phase (220 V): JCRm 1A, JCRm 1B, JCRm 1C; JCRm 10M, JCRm 12M, JCRm 15M.
- Pedrollo three-phase (380 V): JCR 1A, JCR 1B, JCR 1C; JCR 10M, JCR 12M, JCR 15M.
- Water supply station series: Pedrollo SAR, Hydrofresh with JCR 1 group pumps, as well as Bettynox 1, Bettynox 2, Bettynox 3 pumps (2013 production).
- Compatible pumps of other brands: Expert Garden 10206866 and similar centrifugal hydrophones if the geometric parameters of the body and impeller match.
Technical Specifications:
| Parameter | Value / Characteristic |
|---|---|
| Part type | Pump part diffuser with Venturi tube (ejector assembly) |
| Article / Factory code | 121001 (121001X) / 121065 |
| Manufacturer | Pedrollo (Italy) |
| Compatible impeller diameter | 120 mm |
| Internal seat diameter of the neck for the impeller | 33 mm |
| Outer diffuser diameter (D) | 142 mm |
| Total height of the assembly | 115 mm |
| Outer diameter of the Venturi tube suction pipe | 32 mm |
| Material | Noryl FE1520PW thermoplastic (glass-filled PPO) |
| Condition | New original part |
Package Contents:
- Pedrollo Diffuser (121001) — 1 pc.
- Venturi tube with nozzle (121065) — 1 pc.
Pro tip: The JCR pump series (stainless steel body) has a compact hydraulic chamber compared to the cast iron JSW series, which is why the diffusers




