Free flow nose to side check valve

Capacity: 40 gpm160 L/min. | Cavity: T-5A
CXFA : Free flow nose to side check valve
Technical Features [ + ]

Free-flow, nose-to-side check valves are on/off circuit components that allow free flow from the inlet (port 1) to the outlet (port 2) and block flow in the opposite direction.

  • Two-port check valves share the same cavity for a given frame size, however, pay close attention as flow paths may be in opposite directions.
  • Check valves offer extremely low leakage rates with a maximum leakage of less than 1 drop per minute (0,07 cc/min).
  • Will accept 5000 psi (350 bar) at ports 1 and 2.
  • Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
  • Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP or /LH (see CONFIGURATION section). For further details, please see the Materials of Construction page.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
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Technical Data [ + ]
Note: Data may vary by configuration. See CONFIGURATION section.
Cavity T-5A
Series 2
Capacity 40 gpm160 L/min.
Maximum Operating Pressure 5000 psi350 bar
Maximum Valve Leakage at 110 SUS (24 cSt) 1 drops/min.0,07 cc/min.
Valve Hex Size 1 1/8 in.28,6 mm
Valve Installation Torque 45 - 50 lbf ft61 - 68 Nm
Model Weight .40 lb0,20 kg
Seal kit - Cartridge Buna: 990203007
Seal kit - Cartridge EPDM: 990203014
Seal kit - Cartridge Viton: 990203006
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Performance Curves [ + ]
Performance Curve for CXFA: Free flow nose to side check valve Performance Curve for CXFA: Free flow nose to side check valve
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FAQs [ + ]
I need to discharge a large accumulator. How can I increase the capacity of my discharge circuit?

Because of the very high ratio, the COFO has limited capacity. The discharge path is across a .050 inch (1,3 mm) diameter orifice. If you have large accumulators combined with low precharge pressures, this may not discharge the energy quickly enough. Using the COFO XDN cartridge in conjunction with an LODA XDN will provide capacity for larger applications.

How big is a drop of hydraulic oil?  

There are exactly 250 Sun drops in a cubic inch or 15 in a cc.

Direct acting or pilot operated - what do I use?

Direct-acting valves are used to prevent over pressure, and pilot-operated valves are used to regulate pressure. If you are unsure, use a direct-acting valve. Sun's direct acting valves are very fast, dirt tolerant, stable, and robust. Sun's pilot-operated valves are moderately fast, they have a low pressure rise vs. flow curve, and they are easy to adjust.

What parts of the Sun cartridge valve are field serviceable?
Only external seals are serviceable.  Sun offers replacement seal kits for all cartridge models. The applicable kit part number can be found in the product page's Technical Data table or by using our Cartridge Seal Kit search function located under Accessories. Please note: Converting the external seals from one material to another does not ensure fluid compatibility with that material due to the existence of internal seals within the cartridge.
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  • B8B 2 cylinder sequence, with reverse checks
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  • BB2 ISO 05: Reducer on A with reverse flow check
  • BB3 ISO 05: Reducer on B with reverse flow check
  • BB9 ISO 05: Reducer on A and B with reverse flow check
  • BJ2 ISO 05 - X&Y: Reducer on A with reverse flow check
  • BJ3 ISO 05 - X&Y: Reducer on B with reverse flow check
  • BJ9 ISO 05 - X&Y: Reducer on A and B with reverse flow check
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  • CB2 ISO 05: A to T, check T to B
  • CB4 ISO 05: On A with reverse flow check
  • CB5 ISO 05: On B with reverse flow check
  • CJ2 ISO 05 - X&Y: A to T, check T to B
  • CJ4 ISO 05 - X&Y: On A with reverse flow check
  • CJ5 ISO 05 - X&Y: On B with reverse flow check
  • CK3 ISO 07: B to T, check T to A
  • CKJ ISO 07: A to T, check T to B
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  • NB2 ISO 05: Reducer/reliever on A with reverse flow check and port 4 external
  • NB3 ISO 05: Reducer/reliever on B with reverse flow check and port 4 external
  • NJ2 ISO 05 - X&Y: Reducer/reliever on A with reverse flow check and port 4 external
  • NJ3 ISO 05 - X&Y: Reducer/reliever on B with reverse flow check and port 4 external
  • U7P ISO 03: On B with free flow check
  • U8B ISO 05 - X&Y: On A with reverse flow check
  • WAT P to T, check on P, side ports
  • WAU P to T, check on P, side ports
  • WAV P to T, check on P, side ports
  • WAW P to T, check on P, side ports
  • WAX P to T, check on P, side ports
  • WAY P to T, check on P, side ports
  • WHY ISO 05 - X&Y: Priority flow control on A with reverse flow check
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  • X9Y ISO 05 - X&Y: Reducer on B with reverse flow check
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  • Z3Q ISO 05: Priority flow control on B with reverse flow check
  • Z3T Ninety degree with reverse flow check - reducing
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  • Z5D ISO 05 - X&Y: A to T, check T to B
  • Z6U ISO 07: A to T, check T to B
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Additional Resources [ + ]
Highlights
Technical Tips
Technical Information
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