High Pressure Flange Mount Safety Screens

High Pressure Flange Mount Safety Screens

The etched screen product line has been expanded with the introduction of High Pressure 17-7PH Flange Mount Safety Screens. These new screens take advantage of the higher strength material properties of 17-7PH stainless steel to provide burst and collapse pressures which average more than two times those of existing 304L designs. The 17-7PH screens are completely interchangeable with the existing etched, flange mount product line and use the same field-proven configuration to provide maximum open screen area for increased dirt holding capacity. The 17-7PH Flange Mount Safety Screens are available in 7 different flange sizes ranging from 0.130" to 0.656" diameter with screen hole sizes of 0.004", 0.006", 0.008" and 0.015" diameter.

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375 High Pressure Relief Valve

375 High Pressure Relief Valve

The 375 High Pressure PRI is a relief valve designed for optimal performance in applications with high backpressure. This new relief valve has shown stable relief flow performance in applications with backpressures up to 850 psig. The 375 High Pressure PRI offers a range of cracking pressures for 3000, 4000 and 5000 psi systems with system peak pressures up to 6750 psi. Featuring a durable tungsten carbide ball and 440C CRES seat, the relief valve weighs only 20 grams and is 100% tested and inspected to ensure reliable, consistent performance.

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440C Lo-Lohm Check Valve

440C Lo-Lohm Check Valve 

A new version of the Lo-Lohm check valve is now available that has been specifically designed for optimal performance in harsh duty applications. Constructed entirely of corrosion-resistant stainless steel, the new 440C Lo-Lohm check features a durable 440C poppet and seat, which provides longer cycle life and increased resistance to damage from contamination, resulting in improved overall system performance. Available in forward and reverse directions in sizes from 0.187 to 0.500" diameter with cracking pressures of 5 +/- 3 and 1 +/- 0.5 psid. Custom check valves can be designed in MP35N for applications in severely corrosive environments.

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281 Zero Leak Pri

281 Zero Leak Pri

The new 281 Zero Leak Pri pressure relief valve is ideal for thermal relief and low flow hydraulic pressure relief applications where zero leakage is required. Cracking pressures are available from 1300 to 4700 psid and typical flow rates range from a few millilitres per minute for thermal relief applications and up to 250 mL/min for low flow pressure relief applications.

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Variable Volume Pumps

Variable Volume Pumps

A new brochure detailing the range of miniature dispense pumps has now been published. The pumps are available in three types, high and standard performance LPV models, along with LPL solenoid pumps, in a range of full stroke volumes from 50 µL to 3000 µL.

These pumps, which are an ideal alternative to conventional syringe or peristaltic pumps, combine a compact, lightweight design, with low power consumption so they can be located wherever fluidic requirements dictate, regardless of maintenance accessibility.

They are designed for consistent, repeatable performance, with a CV as low as 0.04% at full stroke, volume resolution as small as 0.04 µL. Thanks to the use of chemically inert construction materials, Lee pumps are maintenance-free, providing users with the assurance of a reliable operating life of 5,000,000 cycles minimum.

The range provides engineers with optimum flexibility as the high performance LPV models combine speed, size and accuracy with small dispense volumes from 0.04 up to 1.0 µL and pressures to 95 psi, the standard LPV models offer the same reliable, repeatable performance on a smaller scale, with dispense volumes from 0.01 up to 1.5 µL and pressures to 15 psi, while the LPL solenoid models enable consistent, fixed volume dispensing from 50 up to 130 µL (depending on configuration).

Lee pumps are ideal for a wide range of automated liquid handling applications such as systems for in-vitro diagnostics, scientific instrumentation, drug discovery, or wherever high precision, reliable fluids transfer is needed, on a miniature scale.

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Series 300 Micro Inert Valve

Series 300 Micro Inert Valve 

The new Series 300 Micro Inert Valve is a 2 way, normally closed solenoid valve that facilitates higher packing density, enabling more valves to be positioned in the same area, resulting in smaller manifolds and therefore a smaller footprint. The LFN centre-to-centre spacing is 0.3" (compared to 0.5" for the previous LFV valve). These valves can also contribute to savings on material, for example, if engineered plastics such as PEEK, are used for the manifold. Other benefits include less transport volume thanks to closer spacing which results in reduced length of the connection passages in the manifold. This can reduce the amount of reagent needed, whilst also reducing the transport time of a sample. The LFN valve has a low internal volume of just 13 microlitres and so reduces the amount of fluid needed which contributes to lower eagent volume and faster throughput. The LFN valve also features a faster response time (20mS) and a lower power consumption (900W) than the LFV micro inert valve.

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375 Bender Jet

375 Bender Jet  

The 375 Lee Bender Jet® is a low Lohm, multiple-orifice restrictor designed for systems with high flow rates and large pressure drops. With a minimum passage of .070” or greater, the 375 Bender Jet offers over three times the cavitation resistance of a comparable single orifice restrictor and virtually eliminates any possibility of clogging.

Designed to meet the requirements of 5,000 psi systems, the 375 Bender Jet meets aerospace standards for an unscreened restrictor and is offered in six standard Lohm rates ranging from 125 to 375 Lohms.

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Check Valves for Industrial Gas Turbines

Check Valves for Industrial Gas Turbines

Ideal for use in purge air, water injection and liquid fuel applications, Lee’s new Power Generation Chek® Valves are field serviceable, allowing the user to disassemble and service the valve using a rebuild kit. Available with or without a removable, washable Hi-Bar® Safety Screen, the check valves are designed according to specific customer requirements and can operate at temperatures up to 450 F.

Featuring low leakage and high flow, each Power Generation Chek Valve is 100% tested and inspected to ensure reliable, consistent, long term performance.

3 Way High Flow Solenoid Valve

3 Way High Flow Solenoid Valve 

The new miniature 3-way High Flow Solenoid Valve offers dramatic space and weight savings as well as high reliability and performance. Available in a single coil configuration, the compact valve weighs just 4 ounces and uses only 7.8 watts at 28 vdc. Operating pressure is 3,000 psi, and minimum flow at that pressure is 4.0 USGPM (300 Lohms).

A unique plunger design and innovative materials in the magnetic circuit result in a miniature, low power consumption solenoid with an unusually efficient force/stroke relationship. The use of the patented Lee Multi-Seal enables the hydraulic portion of the valve to be extremely small and compact. This new sealing technology eliminates conventional O-rings and back-up rings, and radically simplifies port layout by allowing two ports to be sealed in the same axial plane.

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Micro-Dispense Nozzles

Micro-Dispense Nozzles

Lee Micro-Dispense Nozzles provide a convenient method of accurately controlling dispensed volumes when used in conjunction with VHS Micro-Dispense Solenoid valves. Designed for applications where the volume of liquid to be dispensed is in the microlitre to nanolitre range, these new nozzles are available in two different configurations for system design flexibility: 062 MINSTAC threaded ends and straight tube. In addition to the standard stainless steel dispensing nozzles, a limited number of Teflon coated nozzles are available. The Teflon coating helps to prevent hanging drops at the end of a dispense .

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