CDAQ-MCN – Sun Hydraulics Mechanically operated, back-to-back check valve
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Part number: CDAQMCN · CDAQ-MCN · CDAQ MCN
Mechanically operated, back-to-back check valve. Cavity T-162DP, capacity 1.25 gpm (4,7 L/min.). Genuine Sun Hydraulics cartridge — MultiFlow is an authorized distributor.
CDAQ-MCN overview
CDAQMCN (CDAQ-MCN, CDAQ MCN) is a Sun Hydraulics Sun Hydraulics Mechanically operated, back-to-back check valve, rated 1.25 gpm (4,7 L/min.) and installed in cavity T-162DP. MultiFlow supplies genuine Sun Hydraulics cartridges in the UAE, GCC and India — use Add to Enquiry above for availability and a quotation.
Ordering codes
Pick the code that matches the material and finish you need. Add it to your enquiry above, or tap a code to select it.
| CDAQMCN | Buna-N sealsBuna-N |
|---|---|
| CDAQMCV | Viton sealsViton |
Specifications
| Cavity | T-162DP |
|---|---|
| Series | 0 |
| Capacity | 1.25 gpm (4,7 L/min.) |
| Maximum Operating Pressure | 5000 psi (350 bar) |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 1 drops/min. (0,07 cc/min.) |
| Valve Internal Hex Size | 5/16 in. (8 mm) |
| Valve Installation Torque | 20 - 25 lbf ft (27 - 33 Nm) |
| Seal kit - Cartridge | Viton: 990162006 |
A special tool is required to install this cartridge. Use part number 998-101 to order this tool.
How to read CDAQMCN
Sun part numbers are the model followed by one code per option. Hyphens, slashes and spaces are only dividers, so CDAQMCN, CDAQ-MCN, CDAQ MCN are the same part.
| Model | CDAQ — Sun Hydraulics Mechanically operated, back-to-back check valve |
|---|---|
| Control | M — Mechanical Actuation |
| Cracking Pressure | C — 30 psi (2 bar) |
| Seal Material | N — Buna-N |
| Material / coating | Add /AP (stainless steel, passivated) or /LH (mild steel, zinc-nickel) to the end; no suffix is the standard finish. |
Control options
- M — Mechanical Actuation
Cracking Pressure options
- C — 30 psi (2 bar)
Seal Material options
- N — Buna-N
- V — Viton
Technical features
- This valve is not designed to handle side forces. Actuating direction must be axial, and contact surface must be perpendicular to valve axis to within 5°.
- This valve is NOT meant to be cam operated.
- This valve is NOT to be used in place of a mechanical stop.
- Maximum stroke of the poppet must be limited to .047 in. (1,2 mm) by a mechanical stop other than the valve itself.
- Note: Port 2 of the T-162A cavity is not used with this valve.
- A cylinder that does its work while extending can put a large load on the rod gland at the end of its stroke. A phaser check in the piston can limit the unnecessary force on the gland.
- If you need to monitor the pressure in a cylinder, a phaser check can prevent the trapping of a false pressure value by a load holding valve.
- A phaser check in the piston of a vertically mounted cylinder will bleed air at the end of the stroke.
- Phaser checks in the pistons of master/slave cylinders will synchronize the cylinders simply by taking the mechanism to the end of its travel in both directions. This lends itself to dual cylinder steering applications.
- Check valves offer extremely low leakage rates with a maximum leakage of less than 1 drop per minute (0,07 cc/min).
- 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.
Drawings, symbol & performance curves
Downloads
Datasheet
Technical reference sheets
CAD files
Frequently asked questions
Is CDAQMCN the same as CDAQ-MCN?
Yes. Sun Hydraulics writes this part number as CDAQMCN. It is the model CDAQ followed by the configuration code; hyphens, slashes and spaces are only dividers, so CDAQMCN, CDAQ-MCN, CDAQ MCN all refer to the same product.
Do you supply CDAQMCN in the UAE, GCC and India?
Yes. MultiFlow supplies genuine Sun Hydraulics cartridges, including CDAQMCN, to customers in the UAE, the wider GCC and India. Use Add to Enquiry on this page for availability, lead time and a quotation.
Can I get the datasheet and CAD files?
Yes. The datasheet, technical reference sheets and CAD files (DXF, DWG, STP) are listed in the Downloads section of this page.
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.
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.
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.
Manufacturer reference: https://www.sunhydraulics.com/model/CDAQ
