TOMCO Quick Coupler Training Basics of Hydraulic Couplers

disconnect " Are there different types? 3 Different types have been introduced during the age of hydraulic power depending on the particular industry and job application for which they are intended 3 The way they are valved and connect together determine their Type and Application " How many parts are there to a hydraulic coupling? 3 With any hydraulic coupler, there are always two halves; Both with a poppet valve.<br><br> Purpose, Types and Valving The ÒPlugÓ Ð male halfThe ÒCouplerÓ Ð female half Terms: Poppet Valve : Mounted in the I.D. of the plug or coupler body and spring loaded, the valve moves into and out or its port. Normally the valve is closed-in the port.<br><br> ISO ; International Standards Organization: Sets dimensional and performance standards " Do all Hydraulic Couplings contain shutoff valves? 3 If automatic shutoff, upon disconnect is needed, each half must always contain a valve 3 If NO shutoff is needed, the halves are non-valved No technical disadvantages but FF types tend to be more expensive. Tomco FF and FE series are examples of this type of coupling Cannot be used where fluid spillage is a factor.<br><br> Tomco ST and MC series are examples of this type of coupling Impossible to Couple with this design if pressure is in the line. Tomco A5600 and THK [ISO types, A and B] are examples Large Coupling; Cannot be used where space is a problem. Tomco A5100 is an example of this type of coupling Hydraulic Couplers " Poppet valved 3 Sleeve Style: disconnect / connect " Couple under pressure 3 Wind-on feature to connect and disconnect " Minimum Spill 3 Flat Valving Minimizes hydraulic fluid spillage " Straight Through 3 Full Flow 3 no shut-off valving in this type of coupling Disadvantage: Basic Types of Hydraulic Couplers Hydraulic Couplers " Developed during the late 1950 9s as the first all steel coupling for hydraulics " Poppet Valved: Adopted by the Mobil Equipment Industry Basic Types Ð ISO A Type First sold by the Aeroquip Corporation: 1959 +1/2": Size will work at 4000psi +Available only in Steel Industry Interchanges: Tomco A5600 = Aeroquip 5600 = Parker 6600 = Faster ANV Hydraulic Couplers " Developed during the late 1950 9s " Poppet Valved: Used in Industrial Hydraulics usually in plant on hydraulic systems Basic Types Ð ISO B Type First sold by the Hansen Coupling Co.<br><br> 1963 +1/2": Size will work at 4000psi +Available in Steel, Brass, Stainless Steel Industry Interchanges: Tomco THK = Hansen HK = Parker 60 Series = Aeroquip FD 45 Hydraulic Couplers " Common to both cISO d types of couplings: 3 Both types are double shutoff 3 Both have a spring loaded poppet valve in both the socket and plug part of the coupling 3 Both valves instantly close when the coupling halves are disconnected and are pushed open when the halves are connected 3 Both developed during the late 40 9s / early 50 9s when hydraulic pressures were always in the range of 1200psi or lower 3 Designed as an upgrade to the unsatisfactory, heavy-duty air couplings traditionally used for hydraulic, water and chemical circuits during the 30 9s and 40 9s 3 Both can be utilized as single valved or non-valved couplings 3 Both have cpoppet d style valves 3 Neither one can be coupled under pressure 3 Both tend to spill and drip when connected or disconnected 3 Neither one will interchange with the other Basic Types Ð Is it ISO Type A or ISO Type B? USES: ISO A Ð Mobile Hydraulics, ISO B Ð Industrial ISO B Longer Plug Nose ISO A Shorter Plug Nose Hydraulic Couplers " Developed during the late 1960 9s as the first effort to be able to connect and disconnect when trapped pressure was present Ð Flat Face type valving. Ð Permits dry break Ð First sold by Aeroquip during the 60Õs to hydraulically operated trailer builders.<br><br> Ð Now used on all Mobile Hydraulics, Oil Rigs and on Test Stand Applications where frequent connect and disconnect is necessary with pressure trapped in the lines. Ð +1/2" pipe thread version [3/4" body size], works at 3000psi Ð 1 1/4" size at 2750psi Basic Types Ð Couple Under Pressure Industry Interchanges: Tomco A5100 = Aeroquip 5100 = Faster FB = Parker 6100 + Available only with brass body and steel sleeve Hydraulic Couplers " Developed during the late 1970 9s for the farm market as an improvement to their traditional cPioneer d, a ball valved coupling that leaked Ð Flat Face type valving minimizes leaks and drips upon connection Ð Flush valve face minimizes dirt included upon connection Ð NS (non spill) first developed during late 60Õs by Brunning Hydraulics Ð had quality problems Ð Later version, developed during early 1980, called FF (Flat Face) was a modification of the original NS design Ð 3/8" body size with alternate 1/2" port were only sizes available Ð First industry which standardized on this type of coupling were the hydraulic tool OEMÕs, who developed the HTMA standard (FF type) Ð Now used in all sizes with chemicals, the mobile industry and machine tools Basic Types Ð Minimum Spill Quick Disconnects Industry Interchanges: Tomco FF - FE = Faster 2FF-2FFJ = Parker FF-FE = Aeroquip FD49 = Safeway FF49 Hydraulic Couplers " Have been around forever. Preceded valved one-way couplers " Early versions utilized in water hydraulics in 19th century Ð Most non-valved couplings are brass or stainless because of their applications with chemicals, water or in outdoor environments Ð Steel is available - Steel plugs used in pressure wash Basic Types Ð Non-Valved Couplings Industry Interchanges: Tomco ST, Hansen ST, Parker ST Industry Interchanges: Tomco MC,Hansen FT, Foster FS, Parker PC Industry Interchanges: Tomco THK-NV, Other ISOB Style, Non-valved ST Style Most popular [1/2Ó works at 2700psi] sizes: 1/8 thru 1 1/2 MC Style Usually used in water cooling circuits in injection molding industry THK Non-valved Use as Straight Through where high pressure capability is needed Hydraulic Couplers Working Pressure, Valving, Size Range, Material Availability Valve Type of coupling SocketPlug Working PressureSize RangeMaterial ISO AYesYes1/4Ó=5000psi Other sizes 4000psi 1/4Ó-3/8Ó-1/2Ó 3/4Ó-1Ó Always Steel Steel: 1/8Ó thru 1/2Ó=4000psi 3/4Ó and 1Ó=2000psi Steel Brass: 1/8 thru 1Ó-1000psiBrass ISO BYesYes Stainless: 1/8Ó and 1/4Ó=2000 psi 3/8Ó thru 3/4Ó=1500psi 1/8Ó-1/4Ó-3/8Ó-1/2Ó 3/4Ó and 1Ó Stainless 303 Type Couple Under Pressure YesYes3/4Ó and 1Ó IS 3000 psi 1 1/4Ó is 2750psi *1/2Ó thread available with 3/4Ó body size coupling and plug 1/2Ó-3/4Ó-1Ó,-1 1/4ÓAlways Brass YesYesSteel: 3/8Ó=10,000 psi Available with 3/8Ó or 1/2Ó pipe thread 3/8ÓSteel YesYesSteel: 1/4Ó=4000psi 3/8Ó thru 1Ó=3000psi 1/4Ó-3/8Ó-1/2Ó 3/4Ó-1Ó Steel Minimum Spill Types YesYesStainless 3/8Ó size; 2000psiStainless NoNoST Types: 1400psi up to 5500psi1/8Ó 1/4Ó-3/8Ó-1/2Ó- 3/4Ó-1Ó-1 1/4Ó-1 1/2Ó Brass, Steel, Stainless NoNoMC Types: 200psi1/4Ó-3/8Ó Ð 1/2ÓBrass only Straight Through Types NoNoGH Types: 200psi5/8Ó Garden Hose Size Brass only<br><br>

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