Precision Needle Valve w/Non-rotary Needle
MODEL 2412 SERIES
This needle valve has been designed to control minute gas and liquid flowswith precision and ease. 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.
Features
1.Capable of controlling ultra-minute flows
Very accurate, stable control of ultra-minute flows up to 1 ml/min possible
2.Wide variations of needle type
15 types of needles are available for your choice of the type that best suits your needs.
3.Needle of 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.
4.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 upon
the temperature conditions.
Very accurate, stable control of ultra-minute flows up to 1 ml/min possible
2.Wide variations of needle type
15 types of needles are available for your choice of the type that best suits your needs.
3.Needle of 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.
4.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 upon
the temperature conditions.
Applications
1.For accurate control of minute flows of gases and liquids
Standard Spesifications
Rated flow ranges : Rated flow ranges
Number of turns of regulating screw : Approx. 12 turns
Maximum operating pressure : 1.0 Mpa
Maximum operating temperature : (B) 70℃
(SS) 120℃
(SS) 120℃
Materials of parts in contact with fluids : (B) Brass, POM, NBR
(SS) SUS316, fluorocarbon resin, FKM
(SS) SUS316, fluorocarbon resin, FKM
Fluids : Gas and liquid
Connection end : Rc 1/4 (standard)