Kofloc Model 2412 Precision Needle Valve

Kofloc Model 2412 Precision Needle Valve w/Non-rotary Needle: This needle valve has been designed to control minute gas and liquid flows with precision and ease. The design allows the rotation of the regulating screw to transform into linear motion of the needle without subjecting the needle to gaps and/or vibrations produced by the screw, so smooth, stable flows can be ensured.

A needle valve is the typical flow control valve that controls the flow rate based on the change of resistance of the flow channel using an acicular or rod-shaped needle to adjust the opening of the flow channel that functions as a small orifice. KOFLOC offers simple-type, precision-type, and various other needle valves, and also manufactures flow controllers having a combination of a needle valve and diaphragm as well as proportional solenoid valves that electrically control the flow rate.

Features

Capable of controlling ultra-minute flows
Very accurate, stable control of ultra-minute flows up to 1 ml/min possible
Wide variations of needle type
15 types of needles are available for your choice of the type that best suits your needs.
The needle of the non-rotary structure
Because this valve is constructed so that the rotation of the regulating screw is transformed into linear motion of the needle, the valve has a longer life in addition to superior control performance.
Superior temperature characteristic (15-35°C)
The valve counts on an outstanding temperature characteristic (flow fluctuations remain within an insignificant range of 0.3%/°C to ambient temperature variations) thanks to the temperature compensation system incorporated in the valve’s needle and orifice. This temperature compensation system is a utility model of KOFLOC registered at the United States Patent and Trademark Office. (Optional specification for needles #SS1 to #3B-BS)
This temperature compensation system is applicable to gases only, and not to liquids, because the viscosity of a liquid may fluctuate depending on the temperature conditions.

Applications

For accurate control of minute flows of gases and liquids

Specifications

Rated flow ranges	See the table below
Number of turns of regulating screw	Approx. 12 turns
Maximum operating pressure	1.0 MPa
Maximum operating temperature	(B) 70℃ (SS) 120℃
Materials of parts in contact with fluids	(B) Brass, POM, NBR (SS) SUS316, fluorocarbon resin, FKM
Fluids	Gas and liquid
Connection end	Rc 1/4 (standard)

Optional Specifications

Connection opening
• Materials not included in the standard specifications

Downloads

Datasheet : Kofloc Model 2412 Precision Needle Valve wNon-rotary Needle

Kofloc Model 2412 Precision Needle Valve