Description
Original Diffuser with Venturi Tube for Pedrollo JCR / JSW Pumps (121007X / 121051Z, ∅164 mm)
The original diffuser with Venturi ejector block (factory codes 121007X / 121051Z) is a key hydraulic component of high-performance Pedrollo self-priming pumps (JCR and JSW series with 0.75–1.1 kW power from previous generations). The unit converts the kinetic energy of the flow from the rotating impeller into stable static pressure, while the built-in Venturi nozzle creates a deep vacuum in the suction chamber, allowing the pump to reliably lift water from depths of up to 9 meters, even in the presence of air pockets in the line.
Key Advantages and Features:
- Original Pedrollo OEM (Italy): Manufactured using original Pedrollo S.p.A. factory molds, ensuring precise factory clearances with the impeller and 100% restoration of the pump's nominal pressure and head.
- Wear-resistant Noryl technopolymer (PPO-GF): The material is corrosion-resistant, resistant to cavitation damage, contact with hard water, and the hydro-abrasive effects of fine sand particles.
- Increased housing size (∅164 mm): Designed for the large hydraulic chamber of powerful pumps and an impeller with a 135 mm diameter and a narrow 33 mm suction seat.
- Powerful ejector assembly: The elongated Venturi tube (106 mm) with an enlarged inlet fitting (41.5 mm) optimizes water intake at high flow rates.
Compatibility and Application:
Standardly installed in Pedrollo self-priming centrifugal pumps with stainless steel (JCR) and cast iron (JSW) pump bodies (manufactured until May 2012 and certain series until 2016):
- Single-phase Pedrollo pumps (220–230 V): JCRm 10M (modifications -, A, B, C until 05/2012), JCRm 12M (-, A), JCRm 15M (-, A, B, C until 05/2012), JCRm 10H, JCRm 15H; JSWm 10M, JSWm 12M, JSWm 15M (assembly codes 121055MA, 121051XZ).
- Three-phase Pedrollo pumps (230/400 V): JCR 10M (modifications -, A, B until 04/2010; C, D until 05/2012), JCR 12M (-, A), JCR 15M (-, A, B, C, D until 05/2012); JSW 10M, JSW 12M, JSW 15M.
- Pump stations: Pedrollo Hydrofresh based on JCRm/JSWm 10M, 12M, 15M pumps with 0.75–1.1 kW power.
- Analogs from other manufacturers: Delfin JCRm 10M, 15M (1.1 kW) pumps, Expert Garden 10206866 pumps, and similar hydrophores with stainless steel chambers, provided the dimensions match exactly.
Technical Specifications:
| Parameter | Value / Specification |
|---|---|
| Spare part type | Pump part diffuser with Venturi tube (ejector assembly) |
| Factory code (Part number) | Diffuser: 121007X / Venturi tube: 121051Z (121051XZ) |
| Manufacturer | Pedrollo (Italy) |
| Diffuser outer diameter (D) | 164 mm |
| Total assembly height | ~143 mm |
| Venturi tube height | 106 mm |
| Compatible impeller diameter | 135 mm |
| Inner impeller seat (suction) | 33 mm (narrow suction) |
| Venturi tube suction pipe outer diameter | 41.5 mm (seating groove for 38.5 mm ring) |
| Material | Noryl thermoplastic (PPO, reinforced
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Diffusers for water pump
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