DFDA8DN – Sun Hydraulics 2-way, poppet directional valve with integral T-8A control cavity - control 1-2, Standard Material/Coating
Part number: DFDA8DN · DFDA8-DN · DFDA8 DN
2-way, poppet directional valve with integral T-8A control cavity – control 1-2. Cavity T-5A, capacity 30 gpm (120 L/min.). Genuine Sun Hydraulics cartridge — MultiFlow is an authorized distributor.
DFDA8-DN overview
DFDA8DN (DFDA8-DN, DFDA8 DN) is a Sun Hydraulics Sun Hydraulics 2-way, poppet directional valve with integral T-8A control cavity - control 1-2, rated 30 gpm (120 L/min.) and installed in cavity T-5A. 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.
| DFDA8DN/AP | Stainless Steel, PassivatedStainless Steel, Passivated |
|---|---|
| DFDA8DN | Standard Material/CoatingStandard Material/Coating |
Specifications
| Cavity | T-5A |
|---|---|
| Series | 2 |
| Capacity | 30 gpm (120 L/min.) |
| Maximum Operating Pressure | 5000 psi (350 bar) |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 10 drops/min.@5000 psi (0,7 cc/min.@350 bar) |
| Check Cracking Pressure | 50 psi (3,5 bar) |
| Pilot Control Cavity | T-8A |
| Pilot Control Valve Installation Torque | 20 - 25 lbf ft (27 - 33 Nm) |
| Response Time - Typical | see pilot control ms |
| Valve Hex Size | 1 1/8 in. (28,6 mm) |
| Valve Installation Torque | 45 - 50 lbf ft (61 - 68 Nm) |
| Model Weight | .70 lb (0,30 kg) |
| Seal kit - Cartridge | Viton: 990203006 |
Compound cartridge (pilot and main stage) assembly information is provided for reference only. Cartridges must be ordered separately and assembled at point of use.
How to read DFDA8DN
Sun part numbers are the model followed by one code per option. Hyphens, slashes and spaces are only dividers, so DFDA8DN, DFDA8-DN, DFDA8 DN are the same part.
| Model | DFDA8 — Sun Hydraulics 2-way, poppet directional valve with integral T-8A control cavity - control 1-2 |
|---|---|
| Cracking Pressure | D — 50 psi (3,5 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. |
Cracking Pressure options
- D — 50 psi (3,5 bar)
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-5A (106)
- CDX Sun Hydraulics ISO 08: T to A and B Sandwich manifoldDFDA8DN-CDX — request assembly
- DAA Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAA — request assembly
- DAB Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAB — request assembly
- DAC Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAC — request assembly
- DAD Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAD — request assembly
- DAI Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAI — request assembly
- DAJ Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAJ — request assembly
- DAK Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAK — request assembly
- DAL Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAL — request assembly
- DAT Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAT — request assembly
- DAU Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAU — request assembly
- DAV Sun Hydraulics Ninety degree Line mount manifoldDFDA8DN-DAV — request assembly
Technical features
- NOTE: The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required torque value.
- The -8 control option allows the pilot control valve to be incorporated directly into the end of the directional cartridge via the T-8A cavity. These pilot control cartridges are sold separately and include solenoid operation, air pilot operation, and hydraulic pilot operation. See Pilot Control Cartridges.
- 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 DFDA8DN the same as DFDA8-DN?
Yes. Sun Hydraulics writes this part number as DFDA8DN. It is the model DFDA8 followed by the configuration code; hyphens, slashes and spaces are only dividers, so DFDA8DN, DFDA8-DN, DFDA8 DN all refer to the same product.
Do you supply DFDA8DN in the UAE, GCC and India?
Yes. MultiFlow supplies genuine Sun Hydraulics cartridges, including DFDA8DN, 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.
What parts of the Sun cartridge valve are field serviceable?
Manufacturer reference: https://www.sunhydraulics.com/model/DFDA8
