28 4 QUICK COUPLINGS Quick Coupling Safety and Product Life It is common to see quick couplings attached directly to air tools so that users can quickly and easily change tools. This is of course, the whole point of quick couplings in the first place! However if the tool vibrates (impact guns and chipping hammers for example), the quick coupling nipple will “chatter” against the retaining balls in the coupler. The hardened ball bearings will deform (dent) the ridge in the nipple—a process called brinnelling. Eventually the ridge will become high enough that it will prevent the coupling from disconnecting. A better practice is to attach a short whip hose to the tool and use the quick coupling between the whip hose and the main supply hose (see photo below). This isolates the tool vibration from the quick coupling. Also shown in the picture is a G29R hose restraint (also known as a whip check or safety cable), which is used to prevent the supply hose whipping dangerously if the coupling breaks or disconnects accidentally. Quick Couplings
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QUICK COUPLINGS
Quick Coupling Safety and Product Life
It is common to see quick couplings attached directly to air tools so that users can quickly and easily change tools. This is of course, the whole point of quick couplings in the first place! However if the tool vibrates (impact guns and chipping hammers for example), the quick coupling nipple will “chatter” against the retaining balls in the coupler. The hardened ball bearings will deform (dent) the ridge in the nipple—a process called brinnelling. Eventually the ridge will become high enough that it will prevent the coupling from disconnecting.
A better practice is to attach a short whip hose to the tool and use the quick coupling between the whip hose and the main supply hose (see photo below). This isolates the tool vibration from the quick coupling.
Also shown in the picture is a G29R hose restraint (also known as a whip check or safety cable), which is used to prevent the supply hose whipping dangerously if the coupling breaks or disconnects accidentally.
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QUICK COUPLINGS
Lincoln Interchange
Automotive Interchange
Industrial Interchange
Aro Interchange
For easy identification of popular pneumatic quick couplings use these actual size silhouettes
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AUtOmOtIve INterChANGe COUPLINGS
Part Cross Body Thread P R I C E E A C H PkgNumber Reference Size Size PAK Loose Std Pkg Qty
For clamshell packaged parts add:PAK to the part number.Eg... C1:PAK, CP1:PAK, etc.
Part Cross Body Thread P R I C E E A C H PkgNumber Reference Size Size PAK Loose Std Pkg Qty
MALE PIPE THREAD COUPLER
Our Automotive Interchange quick couplers have been designed for superior performance. These manual connect couplings are made from solid brass and steel bar stock. Stainless steel balls and springs maximize corrosion resistance. A tubular valve is standard for all body sizes for improved flow. Plugs are machined from solid steel and brass. Steel plugs are hardened and zinc plated to provide maximum service life.
Our Industrial Interchange quick couplings have been designed for superior performance. These manual connect couplings are made from solid brass and steel bar stock. Stainless steel balls and springs maximize corrosion resistance. A tubular valve is standard for all body sizes for improved flow. Plugs are machined from solid steel and brass. Steel plugs are hardened and zinc plated to provide maximum service life. This series conforms to the MIL-4109C Interchange Standard.
Part Cross Body Thread P R I C E E A C H PkgNumber Reference Size Size PAK Loose Std Pkg Qty
This proprietary design allows automatic connect and pull to disconnect to accommodate one hand operation. Machined from solid brass bar stock. Stainless steel balls and springs maximize corrosion resistance. Tubular valve is standard in 1⁄4" body size, and prong valve standard in 3⁄8" & 1⁄2" body size. Push to connect couplers connect to industrial interchange nipples found on the previous page. They also conform to the MIL-4109C Interchange Standard.
Universal couplers are designed to accept the most common styles of 1⁄4" nipples; Automotive, Industrial, and Aro. These couplers also interchange with the European high-flow style offered by Cejn, OBAC, and Nitto. The design of this coupler combines the easy push-to-connect feature while still maintaining a sleeve coupler profile to prevent accidental disconnection when hoses are dragged.Universal style couplings employ a different valve design than common North American parts that allows much higher air flow rates (see chart below).
Body size Interchange Series Air flow at 100 psi1⁄4" Automotive 37 CFM
Industrial 37Aro 37Lincoln 35Cejn 70
3⁄8" Automotive 70 CFMIndustrial 70Aro 37Cejn 136
CEJN INTERCHANGE NIPPLES
The following nipples interchange with Cejn 320/410 European style fittings and in ¼” body size, they have a locking groove that allows connection to Rectus 25KS series couplers. They will also connect to the Combo Couplers shown above.
These manual connect and disconnect couplings are commonly used in fluid transfer applications where unrestricted flow and high operating pressures are desired. In 1⁄2" size these couplers are also gaining popularity for glycol connections to drive units of progressive cavity jack pumps. Couplers are machined from solid brass and 303 stainless steel bar stock. Stainless steel balls, retaining ring, and spring provide maximum service life. Plugs are machined from solid brass, steel, and 303 stainless steel bar stock. Steel plugs are hardened and zinc plated for maximum service life.
INJeCtION mOLd COUPLINGS
Injection mold couplings provide quick coupling for cooling and heating hoses used on injection molding equipment. In 1⁄2" size these couplers are gaining popularity for glycol connections to drive units on progressive cavity jack pumps.They are machined from solid brass bar stock. Stainless steel balls, retaining ring, and spring provide maximum service life. A high temperature silicone seal is standard. Plugs are machined from solid brass and steel bar stock. Steel plugs are zinc plated for superior corrosion resistance. Mold couplings are usually installed by adding G21B or G2016 hose barb fittings - see Brass Section of this Catalog. Where coupler must be valved, the valve and spring are inserted and retained when the hose barb or other fitting is attached.
GArdeN hOSe COUPLINGS
StrAIGht-thrOUGh COUPLINGS
Our garden hose quick couplings are the heavy-duty answer to plastic and brass residential garden hose quick disconnects. They are a straight-through (no shut-off) design and feature brass bodies with garden hose threads.
Part Cross PRICE EACH PkgNumber Reference Size Loose Std Pkg Qty
GARDEN HOSE FEMALE COUPLER
CST-GHTB GHT $ 5.90 $ 5.40 5
GARDEN HOSE MALE NIPPLE
CPST-GHTB GHT $ 4.10 $ 3.70 5
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Part Cross PRICE EACH PkgNumber Reference Size Loose Std Pkg Qty
The following couplers and nipples come equipped with special seals for steam service. The coupler is also provided with a zinc plated steel flanged sleeve for ease of handling with gloved hands.
C111B BRASS STEAM COUPLER
Female NPTFC111B-06 3PHF3-B 3⁄8" 3⁄8" $ 35.70 1
C112B BRASS STEAM NIPPLE
C112B-06 PH3F3-B 3⁄8" 3⁄8" $ 14.60 1
C100 INdUStrIAL INterChANGe hydrAULIC
C100 couplings are compliant with the ISO-7241-B standard. They also interchange with the following Manufacturer's: Snaptite 72, Hansen HK, Parker 60, Faster HNV, & Areoquip FD45. Larger sleeves on this manual connect and disconnect provide rugged resistance to deformation. Steel sleeves are hardened to provide maximum service life. Machined from solid brass, steel, and 303 stainless steel bar stock. Stainless steel balls, retaining rings, and springs provide maximum service life. Steel and stainless steel units incorporate a Teflon back-up ring to withstand dynamic impulse. A backup o-ring seal is standard in all brass and 1-1⁄4" size units and above. Buna-N (Nitrile) seals are standard. Steel Plugs are hardened and zinc plated to provide heavy duty performance.
Part Cross Body Female PRICE EACH PkgNumber Reference Size NPTF Loose Std Pkg Qty
*Also available in Type 316 Stainless Steel. Please inquire for pricing.
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C300 extreme PreSSUre COUPLINGS
C300 couplings are interchangeable with the following Brands: Parker 3000, Enerpac C604, and Faster PVV. The Urethane seal resists extrusion when subjected to high pressure. The Chrome steel ball valve is coined to the valve seat to improve low pressure sealing performance on this 10,000 psi unit.
Part Cross Body Female PRICE EACH PkgNumber Reference Size NPTF Loose Std Pkg Qty
C200 couplings are compliant with the ISO-7241-A standard. They also interchange with the following Series: Snaptite 61, Hansen IA, Parker 6600, Faster ANV, & Aeroquip FD56(5600). The manual connect and disconnect are machined from solid steel bar stock. Steel sleeves are hardened to provide maximum service life. Stainless steel balls, retaining rings, and springs provide maximum service life. All units incorporate a Teflon backup ring to withstand dynamic impulse. Buna-N (Nitrile) seals are standard. Steel Plugs are hardened and zinc plated to provide heavy duty performance.
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Part Cross Body PRICE EACH PkgNumber Reference Size Material Loose Std Pkg Qty
NOTE: For the 1⁄2" body size, more economical thermoplastic dust caps and plugs are available. See C208-08 and C209-08
C400 INdUStrIAL INterChANGe hydrAULIC
C400 couplings are interchangeable with Parker/Pioneer 4000, Aeroquip FD76, Safeway S20 and comply with ISO standard 5675. In the 1/2" size only, they also meet ISO-7421-A, and so interchange with C200 series 1/2" parts. Traditionally, C400 were supplied with ball type valves. However, to reduce unsightly dripping, many users now specify poppet valves, which are designated by a 'P' in the part number.
Part Cross Body Thread PRICE EACH PkgNumber Reference Size Size Loose Std Pkg Qty
C500H Heavy-Duty Wing Nut couplings are found in oilfield and mining applications where high pressure, shockloads, or external abuse make other couplings unsuitable. These robust couplings are rated to 5000 psi and interchange with Snap-Tite 75 series and Hydraulics Inc 5TV style. Seals can easily be replaced in the field (even the valve seal). C500H couplings comply with Det Norske Veritas North Sea standards.
C600 series occur in certain niche markets and have been around for years. They interchange with Parker/Bruning SM series and Aeroquip FD48 series and are often found on material handling equipment, small tractors, and hydraulic presses. This series is rated at 3 GPM flow rate and for 6000 psi maximum operating pressure.
Part Cross Body Thread PRICENumber Reference Size Size EACH
Our connect under pressure Wing Nut style couplings are interchangeable with the following Manufacturers: Parker 6100, Faster FB, Areoquip 5100, Snaptite 78, and Hansen 96. Stainless steel retaining rings maximize corrosion resistance and extend service life. The internal sleeve seal incorporates a Teflon back-up ring on the valve sleeve to extend service life. This Non Spill coupling provides minimal air inclusion and fluid loss.
Part Cross Body Thread PRICENumber Reference Size Size EACH
VEP series couplings are flush face but they thread together. This feature eliminates premature wear from brinelling of the locking balls in high impulse situations. In addition, the patented internal valve allows connection and disconnection with high residual pressures (up to 3600 psi). The flash face design is easy to clean and also avoids loss of hydraulic fluid during connection and disconnection.
Part Cross Body Thread PRICENumber Reference Size Size EACH
C700 Flush-Face Couplings were developed to handle dirty conditions in construction and maintenance applications. The flat faces on both coupler and nipple are easily wiped clean before connection, avoiding difficult connection and fluid contamination. Other features include a built-in sleeve lock (by rotating the sleeve), single handed connection, non-spill design, and excellent flow performance. Flush-Face Couplings are most often seen on hydraulic jackhammers and emergency rescue equipment, but they are gaining in popularity in a variety of applications. The 3/8" size conforms to HTMA (Hydraulic Tool Manufacturers Association) specifications and interchange with Parker FF and Aeroquip FD49. We stock C700 series for standard pressure applications, and C700H for pressures up to 10,000 psi (see table on next page for pressure ratings by size).
C708-06 3⁄8" Rubber Plug $ 7.10C708-08 1⁄2" Rubber Plug 9.40C708-12 3⁄4" Rubber Plug 11.80C708H-06 FF494-3 3⁄8" Steel Plug 12.00C709-06 3⁄8" Rubber Cap 7.10C709-08 1⁄2" Rubber Cap 9.40C709-12 3⁄4" Rubber Cap 11.80C709H-06 FF499-3 3⁄8" Steel Cap 10.50
Part Cross Body Thread PRICENumber Reference Size Size EACH
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C800 SerIeS hydrAULIC COUPLINGS
Our C800 design interchanges with the following Series: Snaptite H, and Faster TNV. This manual connect and disconnect is machined from solid steel bar stock (also available in Brass and 316 stainless steel). Stainless steel balls, retaining rings, and springs maximize corrosion resistance and extend service life. All units incorporate a Teflon backup ring to withstand dynamic impulse. Also available in valved and non-valved, NPTF, BSPP, ORB, and larger sized configurations. Buna-N (Nitrile) seals are standard. Steel plugs are induction hardened and zinc plated to provide heavy duty performance.
C710 series Flush -Face couplings interchange with Snap-Tite 71 series and comply with Det Norske Veritas North Sea standards for coupling application.
C790 couplers are used for test port diagnostic applications and are rated to 6000 psi. This series fits the ISO 15171-1 interchange and interchanges with Parker PD and Aeroquip FD90 designs.
C791… TEST PORT COUPLERC791-02 1PDF1 1⁄8" 1⁄8" $ 39.00C791-04 1PDF2 1⁄8" 1⁄4" 39.00
C792… TEST PORT NIPPLEC792-02 PD1M1 1⁄8" 1⁄8" $ 10.50C792-04 PD1M2 1⁄8" 1⁄4" 9.60
C710 SerIeS hydrAULIC COUPLINGS
C790 teSt POrt COUPLINGS
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QUICK COUPLING INterChANGe GUIdeQ
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Working Pressures – Coupler series and body materialBody CST CST C100 C100 C100 C200 C300 C400 C500 C500H C600 C700 C700H C700VEP C710 C800Size" Brass Steel Steel 303SS Brass Steel