IMH Handbook of Hydraulics and Pneumatics Actual Size Innovation in Miniature THE LEE COMPANY Industrial Microhydraulics Group The Lee Company IMH Handbook of Hydraulics and Pneumatics 2016 6th Edition THE LEE COMPANY INDUSTRIAL MICROHYDRAULICS GROUP 82 Pequot Park Road Westbrook, Connecticut 06498-0424 U.S.A. Phone: 860 399-6281 Fax: 860 399-7058 (order entry) 860 399-4842 (technical information) Printed in USA © 2009, 2010, 2011, 2014, 2016 INTRODUCTION II THE LEE COMPANY same reliability and consistent performance, in very high quantities. These products are For over 68 years, The Lee Company has produced in an efficient, automated factory to pioneered the design and manufacture of the exacting standards of TS16949. The Lee miniature precision fluid control components Company continues to expand the product for a wide range of industries such as aero- offerings in The IMH Division. Should you space, oil production, Formula 1 car racing need a product not shown in this handbook, and medical/scientific instrumentation. To please contact a Lee Sales Engineer to dis- date, more than 100,000,000 Lee Plugs®, cuss your specific requirements. Restrictors, Valves and Safety Screens have been delivered to aerospace manufacturers MISSION STATEMENT alone, worldwide. A typical commercial jet The Mission of The Lee Company is to de- employs an average of 4,000 such Lee Parts. sign and build state of the art products that Lee Products are specifically engineered to exceed customers’ expectations for utility, enable designers to reduce the size and performance and quality. The Lee Company weight of their designs, while improving qual- constantly strives to improve the product ity and manufacturability. designs, the manufacturing process and the quality system. The ultimate goal is zero de- The Lee Company employs over 1,00 people fects and a satisfied customer. at its Technical Centers in Westbrook and Essex, Connecticut where all manufacturing SALES AND SERVICE is performed. Lee Company sales offices, staffed by degreed sales engineers, are lo- The Lee Company is committed to full pro- cated throughout the United States and Eu- fessional service to our customers through a rope, and the company’s distribution network worldwide sales network of graduate engi- spans the entire globe. Lee’s unique capabili- neers. Lee has sales offices in Huntington ties in miniaturization and engineering ex- Beach and San Bruno, Chicago, Tampa, pertise (one of every eight employees is an Dallas, Detroit, and at the Technical Center engineer) keep the company at the forefront in Westbrook. Lee also has wholly owned of fluid flow technology, and enable it to work sales and service subsidiaries in London effectively with customers to solve difficult fluid (Gerrards Cross), Frankfurt, Paris (Voisins- control problems. Le-Bretonneux), Milan and Stockholm, and is represented in over forty countries. IMH DIVISION If you have a fluid control problem and would In 1991, The Lee Company founded the like to talk to an engineer, or would like prod- Industrial Microhydraulics (IMH) Division to uct information, please contact us here at the adapt its proven design concepts to meet Technical Center, or contact the field sales the higher volume production, performance office (see page C76) nearest you. and cost requirements of automotive, in- dustrial hydraulic and medical applications. IMH HANDBOOK Using design techniques similar to those used for the Lee Plugs, valves, restrictors This handbook is divided into 3 sections: and safety screens that have logged millions Components intended to be installed into of flight hours in aerospace applications, The metal, components intended to be installed IMH Division can now offer products of the into plastic and a technical reference section. TABLE OF CONTENTS III Section I – Products For Installation into Metal ......A1 – A86 Insert Check Valves ...................................................................................A3 – A18 Insert Relief Valves ..................................................................................A19 – A24 Insert Orifices .........................................................................................A25 – A50 Insert Restrictor Check Valves ................................................................A51 – A56 Insert Flow Controls ................................................................................A57 – A62 Insert Shuttle Valves ...............................................................................A63 – A66 Insert Safety Screens .............................................................................A67 – A78 Lee BetaPlugs ........................................................................................A79 – A88 Section II – Products For Installation into Plastic .....B1 – B46 Check Valves ............................................................................................B3 – B11 Relief Valves ...........................................................................................B12 – B18 Orifices ...................................................................................................B19 – B26 Flow Controls ..........................................................................................B27 – B30 Restrictor Check Valves ..........................................................................B31 – B32 Safety Screens .......................................................................................B33 – B38 Products in Plastic Fittings ......................................................................B39 – B46 Section III – Engineering Reference..................................C1 – C73 General Information ..................................................................C74 – C76 INSERTS INTRODUCTION A1 INSERTS The first section of the Handbook contains products intended for installation into metals (Section Two products are to be installed into plastic). The inserts are designed using the insert prin- ciple, which uses a pin to expand a grooved section of the insert's body into the housing wall to effect a seal and retain the component. The pin, which has been pre-installed, is driven into the body. Using friction and penetration, the lands bite into the housing material. The Lee Company does not recommend the use of coatings or surface treatments in the area of the installation hole where the Lee component is to be installed. Do not clean the insert prior to installation. The assembly is prelubricated for proper installation. Installation Force Kg F The insert principle eliminates the need for threads and o-rings. Simply insert the component into a drilled hole and drive the expander pin flush to within 0.25mm (0.010") above flush of the insert. The installation tool can bottom on the insert body. Lee Installation Tools are avail- able for each product and part numbers are listed on each page. Since inserts can only be installed in one direction, most come in forward and reverse flow versions to provide design flexibility. RDIREEVCTEIORN OSFE FLOW VALVE INSTALLATION DIRECTION OF INSTALLATION REVERSE FLOW DIRECTION REVERSE FLOW DIRECTION FORWARD FLOW VALVE DIRECTION OF INSTALLATION DIRECTION OF INSTALLATION FORWARD FLOW DIRECTION FORWARD FLOW DIRECTION Installation forces required to install inserts vary for different model parts and are listed on each page. The force specification may be a maximum or a range. INSERTS SECTION I A2 Features and Benefits TABLE OF CONTENTS • Compact Designs –Minimize housing size. Insert Check Valves .....A3 – A18 • Integral locking end – Long life. Insert Relief Valves ....A19 – A24 –No o-rings to fail. • Pre-assembled Insert Orifices ............A25 – A50 –Easy to integrate into automated assembly lines. Insert Restrictor • 100% tested Check .......................A51 – A56 – Eliminates rework. • All metal design –Wide operating temperature range. Flow Controls .............A57 – A62 –Compatible with most fluids. Insert Shuttle Valves ......................A63 – A66 Insert Safety Screens ...................A67 – A72 Cartridge Screens ...... A73 – A78 Lee Betaplugs® ..........A79 – A88 INSERT CHECK VALVES A3 The IMH Chek™ is a threadless, cartridge-style insert designed for simple, low cost installation into manifolds, and is based on the same hard seat Lee Chek® designs used in flight control systems of almost every aircraft flying today. A robust design and 100% testing ensures consistent, long- term performance up to 28 MPa (4060 psid) and 149°C (300°F) or higher depending on specific applica- tion requirements. A high quality metal to metal seat limits leakage in the checked direction to no more than 20 sccm of air at 172 kPa (25 psi) differential. The valves are compatible with hydraulic fluids, brake fluids, fuels and oils. Integral safety screen protection is available, (see drawings below). Integral Safety Screen Screened Reverse Screened Forward IMH Cheks come in two styles, “axial” and 832 models are side exit flowing. Some “side exit”, (see drawings below). 558, 855 models are available with a ceramic ball as and 400 Bar models are axial flowing and the standard. Side Exit Flow Axial Flow FLOW OUT FLOW IN FLOW FLOW OUT IN FLOW OUT INSERT CHECK VALVES A4 Features and Benefits TABLE OF CONTENTS • Metal to metal seating 5.5mm CHECK VALVES –Provides high reliability. – Long life. 558 Reverse ............................A5 • Leak tight 558 Forward .............................A6 –Efficient system performance. 558 Screened Reverse ............A7 • Guided ball design – Fast response. 558 Screened Forward ............A8 – Low hysteresis. • Positive ball stop 558 Ceramic Ball Reverse .......A9 –Infinite spring life. 558 Ceramic Ball Forward ......A10 – Stable performance. • Screened versions –Blocks rogue contamination. 8.0mm CHECK VALVES • Ceramic ball versions –Compatible with aggressive fluids. 855 Reverse ...........................A11 • Axial and side exit versions 855 Forward ............................A12 – Design flexibility. 855 Screened Reverse ...........A13 855 Screened Forward ...........A14 832 Reverse Side Exit ............A15 832 Forward Side Exit ............A16 400 BAR CHECK VALVES Reverse ..................................A17 Forward ...................................A18 INSERT CHECK VALVES A5 558 SERIES CHEK VALVE – REVERSE FLOW REVERSE INSTALLATION HOLE CHEK VALVE 7.1 3.0 (9.5) MIN. MIN. ACTUAL SIZE 7.3 A ø55 .. 54 03 ø 55 .. 65 55 118° ± 2° ø 4M . 0A 0 X . 1.6 Ra (As Installed) ø0.05 A MAX. * LOA before installation. All dimensions in millimeters. PERFORMANCE ∆P vs. Flow on Water @80°F (27°C) ∆P (PSI) Lohm Rate: 250 Lohms 15 30 45 60 Leakage: 20 sccm/min. (max.)@172 .65 2.5 kPa (25 psid) on air .52 2.0 1 Drop/min. (max.) on M) M) hydraulic fluid P .39 1.5 P W (G W (L Maximum Working Pressure: O .26 1.0 O 28 MPa (4,060 psid) L L F F (Checked Direction) .13 .5 4 MPa (580 psid) (Flow Direction) .00 .0 40 100 200 300 400 ∆P (kPa) Flow Curve for 40 kPa Valve MATERIALS Body ..........303 Stainless Steel LEE PART NO. CRACKING PRESSURE Cage ..........305 Stainless Steel CCRM2550200S 0 kPa (No Spring) Pin .............416 Stainless Steel Spring ........302 Stainless Steel CCRM2550204S 4 ± 3 kPa (0.6 ± 0.4 psid) Ball .............440C Stainless Steel CCRM2550207S 7 ± 5 kPa (1 ± 0.7 psid) CCRM2550214S 14 ± 5 kPa (2 ± 0.7 psid) INSTALLATION CCRM2550225S 25 ± 10 kPa (3.6 ± 1.5 psid) Tool Part Number .....CCRT0900120S CCRM2550240S 40 ± 30 kPa (6 ± 4.4 psid) Force ........................625 Kg F (max.) CCRM2550269S 69 ± 17 kPa (10 ± 2.5 psid) For installation procedure see page A1.