SDHT-LAN – Sun Hydraulics Anti-Shock, pilot-operated, balanced poppet sequence valve with drain to port 3
Part number: SDHTLAN · SDHT-LAN · SDHT LAN
Anti-Shock, pilot-operated, balanced poppet sequence valve with drain to port 3. Cavity T-17A, capacity 60 gpm (240 L/min.). Genuine Sun Hydraulics cartridge — MultiFlow is an authorized distributor.
SDHT-LAN overview
SDHTLAN (SDHT-LAN, SDHT LAN) is a Sun Hydraulics Sun Hydraulics Anti-Shock, pilot-operated, balanced poppet sequence valve with drain to port 3, rated 60 gpm (240 L/min.) and installed in cavity T-17A. 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.
| SDHTLAN | Buna-N sealsBuna-N |
|---|---|
| SDHTLAV | Viton sealsViton |
Specifications
| Cavity | T-17A |
|---|---|
| Series | 3 |
| Capacity | 60 gpm (240 L/min.) |
| Maximum Operating Pressure | 5000 psi (350 bar) |
| Factory Pressure Settings Established at | 4 gpm (15 L/min.) |
| Maximum Valve Leakage at Reseat | 10 drops/min. (0,7 cc/min.) |
| Pressure Ramp Up Time | 300 - 500 ms |
| Response Time - Typical | 2 ms |
| Adjustment - No. of CW Turns from Min. to Max. setting | 5 |
| Valve Hex Size | 1 1/4 in. (31,8 mm) |
| Valve Installation Torque | 150 - 160 lbf ft (203 - 217 Nm) |
| Adjustment Screw Internal Hex Size | 5/32 in. (4 mm) |
| Locknut Hex Size | 9/16 in. (15 mm) |
| Locknut Torque | 80 - 90 lbf in. (9 - 10 Nm) |
| Model Weight | 1.50 lb (0,70 kg) |
| Seal kit - Cartridge | Viton: 990217006 |
How to read SDHTLAN
Sun part numbers are the model followed by one code per option. Hyphens, slashes and spaces are only dividers, so SDHTLAN, SDHT-LAN, SDHT LAN are the same part.
| Model | SDHT — Sun Hydraulics Anti-Shock, pilot-operated, balanced poppet sequence valve with drain to port 3 |
|---|---|
| Control | L — Standard Screw Adjustment |
| Adjustment Range | A — 2000 - 3000 psi (140 - 210 bar), 2000 psi (140 bar) Standard Setting |
| 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
- C — Tamper Resistant - Factory Set
- L — Standard Screw Adjustment
Adjustment Range options
- A — 2000 - 3000 psi (140 - 210 bar), 2000 psi (140 bar) Standard Setting
- C — 4500 - 6000 psi (315 - 420 bar), 4500 psi (315 bar) Standard Setting
- W — 3000 - 4500 psi (210 - 315 bar), 3000 psi (210 bar) Standard Setting
Seal Material options
- N — Buna-N
- V — Viton
Manifold & standard assemblies
Sun manifolds for cavity T-17A (377)
- BJO Sun Hydraulics ISO 05 – X&Y: On P, port 3 to T Sandwich manifoldSDHTLAN-BJO — request assembly
- BK2 Sun Hydraulics ISO 07: Reducer on A with reverse flow check Sandwich manifoldSDHTLAN-BK2 — request assembly
- BK4 Sun Hydraulics ISO 07: Sequence into A with reverse flow check Sandwich manifoldSDHTLAN-BK4 — request assembly
- BK5 Sun Hydraulics ISO 07: Sequence into B with reverse flow check Sandwich manifoldSDHTLAN-BK5 — request assembly
- BK6 Sun Hydraulics ISO 07: Sequence out of A with reverse flow check Sandwich manifoldSDHTLAN-BK6 — request assembly
- BK7 Sun Hydraulics ISO 07: Sequence out of B with reverse flow check Sandwich manifoldSDHTLAN-BK7 — request assembly
- BK8 Sun Hydraulics ISO 07: Cushion lock Sandwich manifoldSDHTLAN-BK8 — request assembly
- BK9 Sun Hydraulics ISO 07: Reducer on A and B with reverse flow check Sandwich manifoldSDHTLAN-BK9 — request assembly
- BKA Sun Hydraulics ISO 07: On A, port 3 to B Sandwich manifoldSDHTLAN-BKA — request assembly
- BKB Sun Hydraulics ISO 07: On B, port 3 to A Sandwich manifoldSDHTLAN-BKB — request assembly
- BKC Sun Hydraulics ISO 07: On A, port 3 external Sandwich manifoldSDHTLAN-BKC — request assembly
- BKJ Sun Hydraulics ISO 07: Reducer on B with reverse flow check Sandwich manifoldSDHTLAN-BKJ — request assembly
Technical features
- Because the modulating occurs inside the cartridge, these valves are immune to most of the problems associated with cavitation, namely noise and manifold erosion.
- Pilot flow continues to increase as the pressure at port 1 (inlet), relative to the pressure at port 3 (drain), rises above the valve setting.
- Not suitable for sequncing cylinders.
- Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
- Pressure settings are insensitive to back pressure at port 2.
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
- Valve is relatively insensitive to varying oil temperatures and oil borne contamination.
- Not suitable for use in load holding applications.
- When pressure at the inlet (port 1) exceeds the threshold setting, the valve opens to tank (port 2). The pilot section moves forward at a steady rate, increasing the setting by compressing the pilot spring. Maximum setting is achieved when the pilot section reaches a mechanical stop.
- The main stage orifice is protected against contamination.
- 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
- 999-901-334 (PDF 344 KB)
- FloatingStyleScrewInCartridge2 (PDF 1 MB)
- TT_US_Cavity-New (PDF 522 KB)
- TT_US_Sequence-New (PDF 493 KB)
CAD files
Frequently asked questions
Is SDHTLAN the same as SDHT-LAN?
Yes. Sun Hydraulics writes this part number as SDHTLAN. It is the model SDHT followed by the configuration code; hyphens, slashes and spaces are only dividers, so SDHTLAN, SDHT-LAN, SDHT LAN all refer to the same product.
Do you supply SDHTLAN in the UAE, GCC and India?
Yes. MultiFlow supplies genuine Sun Hydraulics cartridges, including SDHTLAN, 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.
What does Sun mean by the term sequencing?
A sequence valve opens when the pressure at port 1 exceeds the setting of the valve. When pressures at port 1 and port 2 both exceed the setting of the valve the valve goes full open, or sequences. When this happens flow can go in either direction, just so long as port 1 stays above the setting.
What are the tolerances on pressure settings for Sun's pressure control valves?
Pressure setting tolerances are listed in our Performance Data page. A link to this page can also be found in the Additional Resources tab of the applicable product page.
What parts of the Sun cartridge valve are field serviceable?
Manufacturer reference: https://www.sunhydraulics.com/model/SDHT
