Lee Products Ltd

3 High Street
Chalfont St. Peter
Gerrards Cross
United Kingdom

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Tel: 01753 886664
Fax: 01753 889588
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Lee Products Ltd designs and manufactures a diverse range of miniature fluid control solutions.  We supply our products to companies across the globe and our precision components are used throughout industries including aerospace, automotive, medical, biotechnology, oil exploration and high performance car racing.  

Our technical expertise gained over the past 70 years and our commitment to continuous development and research into leading edge fluid control technology has established us as leaders in our field.

Precision Microhydraulics - Visit our website

Lee Products Ltd paved the way with the design, manufacture and supply of precision microhydraulics and was the only authority supplying the industry for more than 50 years.

We can achieve components from less than 0.01 in up to 1.0 in diameter and from 0.1 to 28grammes as well as size and weight reduction using operating pressures to 8,000 psi. Our 100% inspection and testing services enable us to provide products of the highest quality and the highest reliability. We provide innovative solutions for all kind of industry applications.

Please contact use for further information.

Lee Shuttle Valves - Visit our website

The Lee Shuttle Valve is supplied in four configurations and is designed to isolate the normal from the emergency hydraulic system during normal operation.

Configurations include: a spring based shuttle valve with the emergency port normally closed, the detented shuttle valve which features a poppet latch to close off either the emergency port or the normal port, selective shuttle valves with a non-biased, loose ball design, and inverse shuttle valves where the lower pressure inlet port is open to the common port instead of the higher pressure inlet port.

Lee Shuttle Valves feature miniature insert fits in the head of the actuator, non-interflow design, and low leakage or zero leakage.

Lee Safety Screens - Visit our website

We supply etched safety screens and machined and drilled safety screens. Our etched safety screens are manufactured from stainless steel to be tough and long-lasting and are of a simple design. They are suitable for hole sizes from .004inches to .020inches. Our machined and drilled safety screens are suitable for low Lohm, and high flow capability applications. They feature no burst or collapse at 7500 psid fully clogged, hole sizes from .002inches to .020inches and can be machined and drilled from solid stainless steel bar. We supply more than 150 standard versions to suit all kinds of industry requirements.

Pressure Relief Valves Lee Pressure Relief Valves - Visit our website

Our Lee Pri valves are supplied in two ranges – for pressure relief and sequencing or for thermal relief. Our Lee Pri valves for pressure relief and sequencing feature high capacity miniature inserts and are available in cracking pressures from 20 – 5400 psid.

Various models are available for low or high flow rate applications. Our Lee Pri valves for thermal relief are optimised for relieving small flows and feature low leakage and no elastomer characteristics. Our Lee Pri valves for thermal relief are available for 3000, 4000, and 5000 psi systems.

Please visit our website for detailed technical information or contact us at Lee Products Ltd for further information.

Lee Directional Flow Control - Visit our website

We provide various components for directional flow control. These include Lee Restrictor Checks, Lee Flow Control, and Lee Floserts. Lee Resister Checks are for metered flow in one direction and no flow in the other. Poppet lifts are to wide open position with only 20 psid.

Our Lee Flow Control components are available in a range of four sizes, feature wide Lohm rate selection and high pressure models are available. Our Lee Floserts are for constant flow regardless of differential pressure and provide a wide range of control.

Please contact us for more information regarding our Lee Directional Flow Control options.

Lee Restrictors - Visit our website

Our Lee Restrictors are widely used across the world for the manufacture of military and commercial aircraft. We offer restrictors to suit all kinds of applications. provide a wide range of single-stage orifices such as Lee Jets for higher Lohm rates, and Lee High Watt and Kilowatt Jets for low Lohm rates.

We also provide a range of multi-orifice restrictors which are either Bender Jets or Visco Jets. Our restrictors feature integral safety screens, reduce contamination problems, prevent cavitation, reduce erosion and are available in a range of body sizes.

Please visit our website and follow steps to work out which restrictor is most suitable for your application, or please contact us at Lee Products Ltd for help and advice.

Lee Plugs - Visit our website

Our Lee Plugs are manufactured for effective use for seal drilled holes in critical applications. To give you an idea of the scale of usage, more than 100 million Lee Plugs are currently being used in aircraft, missiles, spacecraft, machine tools, down-hole tools, molds, and many more applications. Lee Plugs feature proof pressures up to 32,000psid and can be easily removed. We also supply Lee Plug R.F.O. (Radial Force Only) that feature no downward pressure during installation and are ideal for thin wall applications, as well as Lee Plug A.F.O. (Axial Force Only) that seal to 56,000 psi, are reusable and are fore axial force only.

Please contact us or visit our website for further information on our range of Lee Plugs.

Lee Checks - Visit our website

We provide Lee Checks in a range of sizes and as forward or reverse flow, side exit, zero leak, or pilot operated versions and are supplied in three basic configurations. We supply Lo-LOHM Checks (poppet-style, high flow-gain check valves that are wide open at 15 psid and offer the lowest Lohm rate), Hi-Q Checks (offer the greatest feasible flow capacity for valve cartridges between ½ and 1inch in diameter), High Pressure Checks (poppet-style valves for up to 8000 psi systems),and Pilot Operated Checks (an all metal pressure piloted to open check valve).

Lee Flosert - Visit our website

Our Lee Floserts are pressure compensated flow controls designed for controlling the velocity of an actuator under varying loads. Lee floserts can increase the stiffness of a hydrostatic bearing or limit the maximum flow rate to control the speed of a pump or motor. The Flosert senses the flow rate in terms of a differential pressure across a fixed orifice and a variable metering orifice automatically adjusts to keep the pressure and the flow rate constant.

Please visit our website for further information.

Lee Piloting Solenoid Valve - Visit our website

The ultra compact Lee Piloting Solenoid Valve was designed and manufactured for use in aerospace hydraulic and fuel systems, oil tool applications, and other related high pressure applications.

The valve features high performance properties (efficient force/stroke relationship), low power consumption, normally closed and normally open valves for 3000, 4000, and 5000 psi, single
coil and dual coil configurations, multiple lead wire egress options, and integral connectors.

Please visit our website for further technical information.

Special Products - Visit our website

Alongside our extensive catalogue of mini and micro flow components we are also able to design and manufacture an equally comprehensive array of bespoke solutions.  We understand that our customers’ applications are unique and as such approximately half of the the products we deliver are either adaptations of our standard products, for example tweaking certain elements of the product such as cracking pressure or leakage, or completely bespoke components that have been designed to meet our customers’ exact specifications.  Please contact us so we can discuss your requirements in detail.

Electro-Fluidic Systems - Visit our website

We are proud to have created many pioneering components during the years that have proved essential for use in many industries. In the 1960s we created the Lee Interface Fluidic (LIF) solenoid valves to meet high performance and reliability demands of the industry. Since the development and success of this first electro-fluidic system, we have designed and created a range of fluid components that are suitable for complete systems for flowing all kinds of fluids and gases.

Please contact us for advice and information on how to build complete fluid handling systems using our highly accurate and reliable components.

Isolation Valves Control Valves - High Density Interface (HDI) Platform - Visit our website

Lee Products offers a comprehensive portfolio of HDI platform control valves that are designed to be utilised in applications that require controlled movement of air, gas or mild liquids.  We have three solenoid valve designs to choose from:

  • LHD Series - their compact size makes them ideally suited for use on a manifold.  Available in 2-port or 3-port configurations
  • LHL Series - magnetically latched with low power and low heat dissipation lending them well to portable applications
  • LHQ Series - whisper technology design reduces noise transference by 50% therefore making them ideal for use in certain medical instrumentation where noise may pose a problem. 

For each design you can also select from plug-in or face mounting styles, with 3-port designs also offering the option of ported mounting.

Dispensing Valves - Visit our website

Our dispensing valves have been designed to control the flow of small amounts fluid at high-speeds.  Lee Products’ VHS series of dispensing valves are popular for medical and scientific applications where the dispensing of fluid in microliters and nanoliters is required.  Designed to deliver enduring performance, these solenoid valves can be adapted to meet the demands of your unique application.

Our INK series of solenoid valves delivers high performance and high speed ink dispensing for large character printing applications.  These drop-on-demand dispensing and low power consumption valves are available with customisable options to suit your individual application.

Isolation Valves - Visit our website

For applications where corrosive or aggressive liquids or gasses are present, Lee Products offers a range of isolation valves.  These are designed to contain the liquid or gas so that it doesn’t cause damage to the valve by coming in to contact with any of its metal workings.  We manufacture 5 different series of chemically inert valves, some of which offer 2-way flow whilst others are equipped to manage 3-way and are suited to use within the fields of vitro diagnostics, human genomics and biotechnology.  Please see our website for full details of each of the options available.

Manifold Technology - Visit our website

We began working in the field of electromechanical valve and pump technology more than three decades ago, swiftly becoming an industry leader.  We have a wealth of experience with manifold technology which has several distinct advantages when compared to systems where discrete components are connected with just tubing.  The number of leakage points is reduced and lower internal volumes are achieved.  Manifolds offer a higher level of flexibility and are more easily assembled into the instrument.  There are several different manufacturing techniques involved, including conventional, multi-layered, ant farm, combination and injection manifold.  Our expertise in fluidics means we have a thorough knowledge of all the different techniques and understand both the components used, as well as the application they are to be used in.  There is a good deal more information about manifold technology on our website, so do have a look.

MINSTAC Tubing End Connections - Visit our website

MINSTAC stands for Miniature Inert System of Tubing and Components and it has been designed for use in conjunction with aggressive fluids. Lee Products has created a tube end solution that avoids the potential damage caused by these fluids at vulnerable connection points. This is accomplished with our specially designed Collet-Lock system, which creates a leak-proof connection between PTFE tubing and our MINSTAC components.  We offer various standard tubing assemblies as well as fitting assembly tool kits.



Registration Number: FC008627
VAT Number: GB228 2148 74
Registered at Companies House:6 June, 1975 (45 years and 7 months ago)
No of Employees: n/a
Annual Turnover: 10-20m
Parent Company: The Lee Company
Company Type:
  • Distributor
  • Stockholder

Opening Times

Monday 08:30 AM - 05:00 PM
Tuesday 08:30 AM - 05:00 PM
Wednesday 08:30 AM - 05:00 PM
Thursday 08:30 AM - 05:00 PM
Friday 08:30 AM - 05:00 PM
Saturday Closed
Sunday Closed

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Additional Information

Brand & Trade Names

  • Lee Chek
  • Lee Jet
  • Lee Plug
  • Lee Pri

Company Certifications

ISO 9001:2015 - Quality management systems – Requirements

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