Iwaki CF-X Active Pulsation Dampeners

Iwaki CF-X is a pulsation dampener fitted to the outlet of air-operated (air-driven) double-diaphragm pumps. The manufacturer’s datasheets call it an “active pulsation dampener” and describe it as fully automatic equipment with self-adjusting speed and pressure control.

What it does

According to the datasheets, CF-X reduces liquid pulsation, liquid surge, foaming and splashing. It helps to protect the pump, pipes, fittings and process machinery from problems caused by pulsation, vibration, thermal expansion, hydraulic shock, water-hammer and cavitation. The manufacturer positions it for improved flow, accuracy and surge control in metering, dosing, blending, mixing, spraying, filling and other important process applications.

How it works

The dampener is installed within 1 m of the pump discharge port and is supplied with compressed air. The user adjusts it in two steps: set the supply air pressure with the regulator connected to the dampener to the level of “pump discharge pressure × 1.1”, then fine-tune within ±0.05 MPa (±0.5 bar) while checking the pulsation. Maximum air consumption is given as 20 L/min (ANR) on all models.

Model selection table

The table summarizes the general values of each datasheet; details that change with the body and diaphragm material are in the corresponding PDF.

Model	Liquid connection	Matching TC-X pump	Operating pressure	Weight
CF-X10 (3/8″)	Rc 3/8 [NPT 3/8]	TC-X100, TC-X101	0-0.7 MPa (7 bar)	3.5-4.3 kg
CF-X15 (1/2″)	Rc 1/2 [NPT 1/2]	TC-X151, TC-X152	0-0.7 MPa (7 bar)	4.8-6.7 kg
CF-X25 (1″)	Rc 1 [NPT 1]	TC-X200, TC-X250	0-0.7 MPa (7 bar)	10.0-15.0 kg
CF-X40 (1½″)	Rc 1½ [NPT 1½]	TC-X400	0-0.85 MPa (8.5 bar); 0-0.7 MPa (7 bar) for the AT/AW, ST/SW, FT/FW and G□, V□ models	21.0-32.0 kg
CF-X25SWFR	Ferrule (Tri-clamp) ISO 1.5s ≈ 3A 1½″	TC-X250SWFR-A	0-0.7 MPa (7 bar)	15.5 kg
CF-X10HT	Rc 3/8	no pump code on the datasheet	0-0.5 MPa (5 bar)	4.3 kg
CF-X25HT	Rc 3/4	no pump code on the datasheet	0-0.7 MPa (7 bar)	12.0 kg
CF-X40HT	Rc 1	no pump code on the datasheet	0-0.7 MPa (7 bar)	29.0 kg

The model code is read as shown in the datasheet nomenclature. In CF-X25VT, for example, 25 is the connection size, V the body material (carbon-filled PVDF) and T the diaphragm material (PTFE). The connection type is coded as Rc or NPT (N).

The CF-X25SWFR is matched with the TC-X250SWFR-A sanitary pump and has an electro-polished stainless steel (SCS14) body with a ferrule (Tri-clamp) connection. In the CF-X HT models the wetted parts are PTFE; the datasheet shows TT (standard PTFE) and HT (high-purity PTFE, clean-room class 1000) pump models but does not give a pump code.

Installation notes

• Install the dampener within 1 m of the pump discharge port.
• For the dampener to work efficiently, the minimum pump discharge pressure must be 0.1 MPa (1 bar).
• For plastic dampeners, the maximum applicable air pressure depends on the liquid temperature.
• For HT models the compressed air quality must meet classes 2-3-2 of JIS B8392-1:2000: maximum particle diameter 1 µm, maximum pressure dew point −20 °C and maximum oil content 0.1 mg/m³.

Which CF-X model suits your pump size, liquid and temperature is decided together with the body and diaphragm material. Send us your requirement and Mikron Proses can help you with the model selection. For other pumps from the same manufacturer, see the Iwaki pump range.