FTDC-XYN – Sun Hydraulics 4-way, 3-position, meter in proportional directional valve
Part number: FTDCXYN · FTDC-XYN · FTDC XYN
4-way, 3-position, meter in proportional directional valve. Cavity T-52A, capacity 18 gpm (70 L/min.). Genuine Sun Hydraulics cartridge — MultiFlow is an authorized distributor.
FTDC-XYN overview
FTDCXYN (FTDC-XYN, FTDC XYN) is a Sun Hydraulics Sun Hydraulics 4-way, 3-position, meter in proportional directional valve, rated 18 gpm (70 L/min.) and installed in cavity T-52A. 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.
| FTDCXYN/AP | Stainless Steel, PassivatedStainless Steel, Passivated |
|---|---|
| FTDCXYN | Standard Material/CoatingStandard Material/Coating |
Specifications
| Cavity | T-52A |
|---|---|
| Series | 2 |
| Capacity | 18 gpm (70 L/min.) |
| Maximum Operating Pressure | 5000 psi (350 bar) |
| Pilot Pressure Required to Shift Valve | 50 - 120 psi (3,5 - 8 bar) |
| Pilot Pressure Required for Full Shift at Rated Flow | 290 - 340 psi (20 - 23 bar) |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 2.7 in³/min.@500 psi (44 cc/min.@35 bar) |
| Pilot Volume Displacement | .04 in³ (0,66 cc) |
| Hysteresis at 50% command | ±35% |
| Valve Hex Size | 1 1/8 in. (28,6 mm) |
| Compensated Flow (using LPJCXHN) | 17 - 21 gpm (64 - 80 L/min.) |
| Valve Installation Torque | 45 - 50 lbf ft (61 - 68 Nm) |
| Model Weight | 1.00 lb (0,45 kg) |
| Seal kit - Cartridge | Viton: 990052006 |
How to read FTDCXYN
Sun part numbers are the model followed by one code per option. Hyphens, slashes and spaces are only dividers, so FTDCXYN, FTDC-XYN, FTDC XYN are the same part.
| Model | FTDC — Sun Hydraulics 4-way, 3-position, meter in proportional directional valve |
|---|---|
| Control | X — Not Adjustable |
| Spool Configuration | Y — A and B to T Center |
| 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
- X — Not Adjustable
Spool Configuration options
- C — Blocked Center
- W — A and B Bleed to T Center
- Y — A and B to T Center
Seal Material options
- N — Buna-N
- V — Viton
Material/coating options
- /AP — Stainless Steel, Passivated
- — Standard Material/Coating
Manifold & standard assemblies
Sun manifolds for cavity T-52A (9)
- U6A Sun Hydraulics Ninety degree Line mount manifoldFTDCXYN-U6A — request assembly
- U6B Sun Hydraulics Ninety degree Line mount manifoldFTDCXYN-U6B — request assembly
- U6C Sun Hydraulics Ninety degree Line mount manifoldFTDCXYN-U6C — request assembly
- U6D Sun Hydraulics Ninety degree Line mount manifoldFTDCXYN-U6D — request assembly
- U6E Sun Hydraulics Ninety degree Line mount manifoldFTDCXYN-U6E — request assembly
- U6F Sun Hydraulics Ninety degree Line mount manifoldFTDCXYN-U6F — request assembly
- U6G Sun Hydraulics Ninety degree Line mount manifoldFTDCXYN-U6G — request assembly
- U6H Sun Hydraulics Ninety degree Line mount manifoldFTDCXYN-U6H — request assembly
- U6J Sun Hydraulics Ninety degree Line mount manifoldFTDCXYN-U6J — request assembly
Technical features
- Pilot ports 1 and 6 will accept 5000 psi (350 bar), however, pressures over 500 psi (35 bar) do not increase flow since at this point the spool will be fully shifted.
- These valves may be pressure compensated by an external, modulating, logic element. Use LR_C-XHN for a bypass circuit or LP_C-XHN for a restrictive circuit.
- The valve provides a degree of self-compensation and may be used as a flow control. To increase the accuracy of flow control, an external, modulating, logic element can be used to maintain a constant flow over a wider range of flows and pressures. See performance curves for additional information.
- Pressure at ports 1 and 6 directly oppose each other.
- 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 FTDCXYN the same as FTDC-XYN?
Yes. Sun Hydraulics writes this part number as FTDCXYN. It is the model FTDC followed by the configuration code; hyphens, slashes and spaces are only dividers, so FTDCXYN, FTDC-XYN, FTDC XYN all refer to the same product.
Do you supply FTDCXYN in the UAE, GCC and India?
Yes. MultiFlow supplies genuine Sun Hydraulics cartridges, including FTDCXYN, 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.
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.
How big is a drop of hydraulic oil?
There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
What parts of the Sun cartridge valve are field serviceable?
Manufacturer reference: https://www.sunhydraulics.com/model/FTDC
