Problems Solved - How Farmington Cv Restrictors Work

Farmington Engineering Cv Restrictors are unique solutions to a common problem faced by engineers: How do you 100% control Gas or Liquid flow in high and low pressure applications?

Old Orifice Methods Problems
Drilling an orifice into the housing 1. Time consuming machining
2. Orifice accuracy?
3. Costly rework for orifice flowing too high
4. Costly rework of broken tools
Press-in orifices 1. Costly machining to accept press fit
2. Leakage between the body and the housing
3. Distortion to the orifice during the installation
4. Galling during installation
Set Screw Modification 1. Costly machining of threaded holes
2. Requires time consuming de-burring
3. Annealing of set screws
4. The use of sealants to prevent spiral leak paths
Modified Threaded Fittings 1. Requires time consuming machining
2. Requires sealants or seals to prevent fitting leakage
3. During repairs fittings may be replaced without an orifice
4. Difficult retention of orifice within the fitting
Hypodermic Tubes 1. Requires time consuming machining
2. Requires time consuming de-burring of tube edges
3. Requires the use of adhesives to retain tubes
4. Requires soldering or welding of tubes
Orifice Plates 1. Orifice Accuracy?
2. Requires numerous o-rings
3. Requires time consuming machining for retention
4. Orifice can erode over time

New Methods Benefits
Farmington Cv Restrictors 1. Variety of expander and threaded Cv Restrictors, in a wide variety of English and Metric sizes.
2. Farmington Cv Restrictors can be installed into any fitting required.
3. Standard orifice tolerance is +/- .001".
4. The only solution to many gas and liquid flow problems.


Farmington Engineering offers Cv Restrictors which satisfy difficult applications and offer value-added that is difficult to find elsewhere. By maintaining superior quality control standards, Cv Restrictors are a reliable, consistent way to meter the flow of liquid in hydraulic and pneumatic components. Please contact us for special materials, flow testing, or other special requirements.