A1 KNF Neuberger liquid diaphragm pumps

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A collection of technical articles on diaphragm pumps

	UFDV Diaphragm Valve The UFDV diaphragm valve is a pressure control device. The selected pressure is adjustable, and applied via a spring-loaded diaphragm. The valves are available in a variety of materials and with a locking set-screw for OEM use, or an easily-adjusted control knob. This valve can be integrated into the NF30, NF100 and NF300 series pump heads. (see below) Port threads are available in G or NPT threads. Models (.51) built to NSF/ANSI 169 are available in NPT threads only on special order.
	UFPD Pulsation Damper The UFPD liquid pulsation damper was developed because of increased interest in low pulsation performance. The inherent pressure waves created by an oscillating diaphragm pump are reduced. It also aids in the reduction of vibration in system hoses and pipes. With the correct selection of damper, a pressure fluctuation of less than 3 psi (200 mbar) can be achieved. Port threads are available in G or NPT threads. Models (.51) built to NSF/ANSI 169 are available in NPT threads only on special order.
	FEZ1 Speed Controller Board for OEM Brush-type DC PM Motors This small motor speed controller board is used to adjust the flow rate of all of our transfer pumps with 12 and 24 VDC DC permanent-magnet motors using brushes. Speed is controlled using a board-mounted potentiometer. The controller uses pulse width modulation (PWM) at a low frequency for compatibility with motors equipped with an EMC filter circuit. The board is designed to be mounted within a protective cabinet only, and is not for external use.
	Variety of Port Types KNF liquid pumps can be manufactured with a variety of port types, including barbed fittings, straight fittings, compression and threaded ports. Port threads are available in G or NPT threads. Models (.51) built to NSF/ANSI 169 are available in NPT threads only on special order.
	NF30B Molded Interconnections These slip-on connectors are available for the boxer design NF30B. Contact KNF application engineers for details and availability.
	Integrated Pressure Relief Valve The models NF30, NF100 and NF300 liquid pumps can be fitted with integral adjustable-pressure relief valves. They are used mainly for protecting downstream systems from overpressure damage due to system blockage, or for discharge pressure regulation. Port threads are available in G or NPT threads. Models (.51) built to NSF/ANSI 169 are available in NPT threads only on special order.
	Heated Liquid Pump Head This option was developed to aid in the pumping of viscous fluids such as glue and syrup. Contact your applications specialist for further information.
	IP65 Watertight and Dust Tight Motor Enclosure KNF developed special enclosures for applications that require motor protection from dust, water or corrosives. They are manufactured from a variety of materials.

KNF is willing to create other special options for your specific OEM requirements. Contact an applications specialist for details.

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NOTES: Standard continuous performance ratings listed on this KNF website and on KNF datasheets are per head, and based on technical data and test results of nominal units measured at sea level, with water at 70°F (20°C) and a nominal electrical supply as listed, and are for reference only. Multiple-head models, different performance models, cost-effective OEM modifications, and a variety of motor options and different materials of construction are also available. Certified drawings are available upon request. Specifications subject to change without notice. You should always check corrosion resistance charts for compatibility with the medium you intend to pump.

KNF NEUBERGER, INC.
Two Black Forest Road
Trenton, New Jersey 08691-1810
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