RPGS-LAN – Sun Hydraulics Pilot-operated, balanced poppet relief valve
Part number: RPGSLAN · RPGS-LAN · RPGS LAN
Pilot-operated, balanced poppet relief valve. Cavity T-3A, capacity 50 gpm (200 L/min.). Genuine Sun Hydraulics cartridge — MultiFlow is an authorized distributor.
RPGS-LAN overview
RPGSLAN (RPGS-LAN, RPGS LAN) is a Sun Hydraulics Sun Hydraulics Pilot-operated, balanced poppet relief valve, rated 50 gpm (200 L/min.) and installed in cavity T-3A. 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.
| RPGSLAN/AP | Stainless Steel, PassivatedStainless Steel, Passivated |
|---|---|
| RPGSLAN/LH | Mild Steel, Zinc-NickelMild Steel, Zinc-Nickel |
| RPGSLAN | Standard Material/CoatingStandard Material/Coating |
Specifications
| Cavity | T-3A |
|---|---|
| Series | 2 |
| Capacity | 50 gpm (200 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.) |
| Response Time - Typical | 7 ms |
| Adjustment - No. of CW Turns from Min. to Max. setting | 5 |
| Valve Hex Size | 1 1/8 in. (28,6 mm) |
| Valve Installation Torque | 45 - 50 lbf ft (61 - 68 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 | .50 lb (0,25 kg) |
| Seal kit - Cartridge | Viton: 990303006 |
How to read RPGSLAN
Sun part numbers are the model followed by one code per option. Hyphens, slashes and spaces are only dividers, so RPGSLAN, RPGS-LAN, RPGS LAN are the same part.
| Model | RPGS — Sun Hydraulics Pilot-operated, balanced poppet relief valve |
|---|---|
| Control | L — Standard Screw Adjustment |
| Adjustment Range | A — 100 - 3000 psi (7 - 210 bar), 1000 psi (70 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
- K — Handknob
- L — Standard Screw Adjustment
- Y — Tri-Grip Handknob
Adjustment Range options
- A — 100 - 3000 psi (7 - 210 bar), 1000 psi (70 bar) Standard Setting
- B — 50 - 1500 psi (3,5 - 105 bar), 1000 psi (70 bar) Standard Setting
- C — 150 - 6000 psi (10,5 - 420 bar), 1000 psi (70 bar) Standard Setting
- N — 60 - 800 psi (4 - 55 bar), 400 psi (28 bar) Standard Setting
- Q — 60 - 400 psi (4 - 28 bar), 200 psi (14 bar) Standard Setting
- W — 100 - 4500 psi (7 - 315 bar), 1000 psi (70 bar) Standard Setting
Seal Material options
- N — Buna-N
- V — Viton
- E — EPDM
Material/coating options
- /AP — Stainless Steel, Passivated
- /LH — Mild Steel, Zinc-Nickel
- — Standard Material/Coating
Manifold & standard assemblies
Sun manifolds for cavity T-3A (238)
- CA3 Sun Hydraulics Ninety degree with gauge port Line mount manifoldRPGSLAN-CA3 — request assembly
- CA4 Sun Hydraulics Ninety degree with gauge port Line mount manifoldRPGSLAN-CA4 — request assembly
- CA5 Sun Hydraulics Ninety degree with gauge port Line mount manifoldRPGSLAN-CA5 — request assembly
- CAA Sun Hydraulics Ninety degree Line mount manifoldRPGSLAN-CAA — request assembly
- CAB Sun Hydraulics Ninety degree Line mount manifoldRPGSLAN-CAB — request assembly
- CAC Sun Hydraulics Ninety degree Line mount manifoldRPGSLAN-CAC — request assembly
- CAD Sun Hydraulics Ninety degree Line mount manifoldRPGSLAN-CAD — request assembly
- CAE Sun Hydraulics Ninety degree with gauge port Line mount manifoldRPGSLAN-CAE — request assembly
- CAH Sun Hydraulics Ninety degree Line mount manifoldRPGSLAN-CAH — request assembly
- CAI Sun Hydraulics Ninety degree Line mount manifoldRPGSLAN-CAI — request assembly
- CAJ Sun Hydraulics Ninety degree Line mount manifoldRPGSLAN-CAJ — request assembly
- CAK Sun Hydraulics Ninety degree Line mount manifoldRPGSLAN-CAK — 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.
- Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
- 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.
- Main stage orifice is protected by a 150-micron stainless steel screen.
- Suitable for use in load holding applications.
- Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
- W and Y controls (where applicable) can be specified with or without a special setting. When no special setting is specified, the valve is adjustable throughout its full range using the W or Y control. When a special setting is specified, this setting represents the maximum setting of the valve.
- Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
- 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_Relief-N (PDF 656 KB)
CAD files
Frequently asked questions
Is RPGSLAN the same as RPGS-LAN?
Yes. Sun Hydraulics writes this part number as RPGSLAN. It is the model RPGS followed by the configuration code; hyphens, slashes and spaces are only dividers, so RPGSLAN, RPGS-LAN, RPGS LAN all refer to the same product.
Do you supply RPGSLAN in the UAE, GCC and India?
Yes. MultiFlow supplies genuine Sun Hydraulics cartridges, including RPGSLAN, 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.
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.
How big is a drop of hydraulic oil?
There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
Can I use a kick-down relief for my system relief?
Maybe not. We build in a good amount of overlap in the kick-down reliefs to prevent false tripping. This means they are not as fast as our standard pilot-operated reliefs. A direct-acting relief valve set just above the kick-down relief valve would be good insurance.
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.
Where would I use a kick-down relief?
One graphic example is on a portable grain auger for silos. When the farmer gets caught in the auger the kick-down relief trips and allows him to escape.
What parts of the Sun cartridge valve are field serviceable?
Manufacturer reference: https://www.sunhydraulics.com/model/RPGS
