DKFD-EHN – Sun Hydraulics Normally closed, balanced poppet, logic element – vent-to-open
Part number: DKFDEHN · DKFD-EHN · DKFD EHN
Normally closed, balanced poppet, logic element – vent-to-open. Cavity T-2A, capacity 30 gpm (120 L/min.). Genuine Sun Hydraulics cartridge — MultiFlow is an authorized distributor.
DKFD-EHN overview
DKFDEHN (DKFD-EHN, DKFD EHN) is a Sun Hydraulics Sun Hydraulics Normally closed, balanced poppet, logic element - vent-to-open, rated 30 gpm (120 L/min.) and installed in cavity T-2A. 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.
| DKFDEHN | Buna-N sealsBuna-N |
|---|---|
| DKFDEHV | Viton sealsViton |
Specifications
| Cavity | T-2A |
|---|---|
| Series | 2 |
| Capacity | 30 gpm (120 L/min.) |
| Maximum Operating Pressure | 5000 psi (350 bar) |
| Minimum Pilot Pressure Required to Shift Valve | 300 psi (20 bar) |
| Control Pilot Flow | See Performance Data |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 10 drops/min.@5000 psi (0,7 cc/min.@350 bar) |
| Pilot Volume Displacement | .02 in³ (0,33 cc) |
| Valve Hex Size | 1 1/8 in. (28,6 mm) |
| Valve Installation Torque | 45 - 50 lbf ft (61 - 68 Nm) |
| Seal kit - Cartridge | Viton: 990202006 |
How to read DKFDEHN
Sun part numbers are the model followed by one code per option. Hyphens, slashes and spaces are only dividers, so DKFDEHN, DKFD-EHN, DKFD EHN are the same part.
| Model | DKFD — Sun Hydraulics Normally closed, balanced poppet, logic element - vent-to-open |
|---|---|
| Control | E — External 4-SAE Drain Port |
| Minimum Pilot Pressure | H — 300 psi (20 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
- E — External 4-SAE Drain Port
Minimum Pilot Pressure options
- H — 300 psi (20 bar)
Seal Material options
- N — Buna-N
- V — Viton
Manifold & standard assemblies
Sun manifolds for cavity T-2A (544)
- 3BC Sun Hydraulics Cushion lock with shuttle Line mount manifoldDKFDEHN-3BC — request assembly
- 3BD Sun Hydraulics Cushion lock with shuttle Line mount manifoldDKFDEHN-3BD — request assembly
- 3BK Sun Hydraulics Cushion lock with shuttle Line mount manifoldDKFDEHN-3BK — request assembly
- 3BL Sun Hydraulics Cushion lock with shuttle Line mount manifoldDKFDEHN-3BL — request assembly
- 3BV Sun Hydraulics Cushion lock with shuttle Line mount manifoldDKFDEHN-3BV — request assembly
- 3BW Sun Hydraulics Cushion lock with shuttle Line mount manifoldDKFDEHN-3BW — request assembly
- 4BC Sun Hydraulics Cushion lock with make up checks Line mount manifoldDKFDEHN-4BC — request assembly
- 4BD Sun Hydraulics Cushion lock with make up checks Line mount manifoldDKFDEHN-4BD — request assembly
- 4BK Sun Hydraulics Cushion lock with make up checks Line mount manifoldDKFDEHN-4BK — request assembly
- 4BL Sun Hydraulics Cushion lock with make up checks Line mount manifoldDKFDEHN-4BL — request assembly
- 4BV Sun Hydraulics Cushion lock with make up checks Line mount manifoldDKFDEHN-4BV — request assembly
- 4BW Sun Hydraulics Cushion lock with make up checks Line mount manifoldDKFDEHN-4BW — request assembly
Technical features
- Unique balanced construction provides predictable switching with 5000 psi (350 bar) at port 1 and port 2, with the external drain port open and a minimum pilot pressure of 300 psi (20 bar).
- The external -4 SAE vent port may be directly connected to a pilot switching valve. The pilot valve should have a leakage rate of less than 10 drops/min (0,7 cc/min). and be able to satisfy the pilot flow requirements. Sun model DAA*-*** solenoid pilot valve is ideal for this application.
- Leakage rate between port 1 and port 2 is very low, typically less than 10 drops/min. at 5000 psi (0,7 cc/min at 350 bar).
- Valve will reseat when the pilot pressure falls below 145 psi (10 bar).
- Port 1 and port 2 are fully sealed from port 3.
- All ports will accept 5000 psi (350 bar).
- 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 DKFDEHN the same as DKFD-EHN?
Yes. Sun Hydraulics writes this part number as DKFDEHN. It is the model DKFD followed by the configuration code; hyphens, slashes and spaces are only dividers, so DKFDEHN, DKFD-EHN, DKFD EHN all refer to the same product.
Do you supply DKFDEHN in the UAE, GCC and India?
Yes. MultiFlow supplies genuine Sun Hydraulics cartridges, including DKFDEHN, 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.
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?
Manufacturer reference: https://www.sunhydraulics.com/model/DKFD
