Description
The Pentax CRT100 400v (code 022-322) is the three-phase version of the CR100, a surface-mounted centrifugal pump with an open impeller that handles soft solids up to 10 mm. It delivers up to 280 litres per minute and reaches a maximum head of 20.5 metres from a 0.74 kW motor, through a 1½” inlet and 1¼” outlet, running on a 400v three-phase supply at 2.4 A.
Hydraulically it is identical to the single-phase Pentax CR100 230v; the difference is the motor. On a three-phase supply it draws less than half the current of the 230v model, which suits farm buildings, nurseries and industrial sites. Wire it through a starter with suitable motor overload protection. If you only have single-phase power, choose the CR100, or the Pentax CR75 230v for lighter duties.
Like every pump in the CR range, it has a cast iron pump body and motor bracket, a stainless steel shaft and a ceramic and graphite mechanical seal. The open impeller passes soft solids up to 10 mm, the suction inlet is 1½” and the delivery outlet 1¼”, and Pentax rates the pump body for a maximum operating pressure of 6 bar. The motor is a two-pole induction motor with class F insulation and IPX4 protection, so it needs to be installed under cover.
Features
- Open impeller passes soft solids up to 10 mm
- Cast iron pump body and motor bracket
- Ceramic and graphite mechanical seal
- 0.74 kW motor, 400v three-phase, 2.4 A
- Up to 280 l/min and 20.5 m head
- 1½” inlet and 1¼” outlet
Applications
- Agricultural irrigation and water transfer on three-phase sites
- Wash-down and washing systems in farm and industrial buildings
- Filling and emptying tanks
- Replacing an existing three-phase CRT100 like for like
Suitable for clean water and water carrying soft solids up to 10 mm, such as silt, fine grit and plant debris. Not designed for sewage, stones, rag or fibrous material, or for flammable or corrosive liquids. The pump is not self-priming and must never run dry; see our guide on how to prime a pump, or choose a self-priming pump if it has to sit well above the water.
The Pentax CR range
| Model | Voltage | Inlet x Outlet | Max Flow (l/min) | Max Head (m) | Motor (kW) | Current (A) | Code |
|---|---|---|---|---|---|---|---|
| CR75 | 230v | 1½” x 1¼” | 240 | 15 | 0.59 | 3.4 | 022-316 |
| CR100 | 230v | 1½” x 1¼” | 280 | 20.5 | 0.74 | 5.3 | 022-320 |
| CRT100 | 400v | 1½” x 1¼” | 280 | 20.5 | 0.74 | 2.4 | 022-322 |
Flow and head are Pentax’s published 50 Hz maximums. See the Pentax CR range page for help choosing a model and answers to common questions.
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