SQFBLAN – Sun Hydraulics Kick-down, pilot-operated, balanced piston sequence valve, Standard Material/Coating
Part number: SQFBLAN · SQFB-LAN · SQFB LAN
Kick-down, pilot-operated, balanced piston sequence valve. Cavity T-2A, capacity 30 gpm (120 L/min.). Genuine Sun Hydraulics cartridge — MultiFlow is an authorized distributor.
SQFB-LAN overview
SQFBLAN (SQFB-LAN, SQFB LAN) is a Sun Hydraulics Sun Hydraulics Kick-down, pilot-operated, balanced piston sequence valve, 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.
| SQFBLAN/AP | Stainless Steel, PassivatedStainless Steel, Passivated |
|---|---|
| SQFBLAN | Standard Material/CoatingStandard Material/Coating |
Specifications
| Cavity | T-2A |
|---|---|
| Series | 2 |
| Capacity | 30 gpm (120 L/min.) |
| Maximum Operating Pressure | 5000 psi (350 bar) |
| Factory Pressure Settings Established at | Kick down point |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 3 in³/min. (50 cc/min.) |
| Response Time - Typical | 25 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: 990202006 |
For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.
How to read SQFBLAN
Sun part numbers are the model followed by one code per option. Hyphens, slashes and spaces are only dividers, so SQFBLAN, SQFB-LAN, SQFB LAN are the same part.
| Model | SQFB — Sun Hydraulics Kick-down, pilot-operated, balanced piston sequence 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
- O — Handknob with Panel Mount
- F — Hex Head Screw with Locknut
- J — Capped Screw Adjustment
- M — Capped Screw Adjustment with Lockwire Holes
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
- D — 25 - 800 psi (1,7 - 55 bar), 400 psi (28 bar) Standard Setting
- E — 25 - 400 psi (1,7 - 28 bar), 200 psi (14 bar) Standard Setting
- W — 150 - 4500 psi (10,5 - 315 bar), 1000 psi (70 bar) Standard Setting
- N — 60 - 800 psi (4 - 55 bar), 400 psi (28 bar) Standard Setting
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-2A (544)
- 3BC Sun Hydraulics Cushion lock with shuttle Line mount manifoldSQFBLAN-3BC — request assembly
- 3BD Sun Hydraulics Cushion lock with shuttle Line mount manifoldSQFBLAN-3BD — request assembly
- 3BK Sun Hydraulics Cushion lock with shuttle Line mount manifoldSQFBLAN-3BK — request assembly
- 3BL Sun Hydraulics Cushion lock with shuttle Line mount manifoldSQFBLAN-3BL — request assembly
- 3BV Sun Hydraulics Cushion lock with shuttle Line mount manifoldSQFBLAN-3BV — request assembly
- 3BW Sun Hydraulics Cushion lock with shuttle Line mount manifoldSQFBLAN-3BW — request assembly
- 4BC Sun Hydraulics Cushion lock with make up checks Line mount manifoldSQFBLAN-4BC — request assembly
- 4BD Sun Hydraulics Cushion lock with make up checks Line mount manifoldSQFBLAN-4BD — request assembly
- 4BK Sun Hydraulics Cushion lock with make up checks Line mount manifoldSQFBLAN-4BK — request assembly
- 4BL Sun Hydraulics Cushion lock with make up checks Line mount manifoldSQFBLAN-4BL — request assembly
- 4BV Sun Hydraulics Cushion lock with make up checks Line mount manifoldSQFBLAN-4BV — request assembly
- 4BW Sun Hydraulics Cushion lock with make up checks Line mount manifoldSQFBLAN-4BW — request assembly
Technical features
- All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size).
- Should not be used in load holding applications.
- The main stage orifice is protected by a 150 micron stainless steel screen.
- Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
- Intended for use on the actuator side of the system as flow through the valve must cease for the valve to reset. If used on the pump side of a system, pump flow must be shut off for the valve to reset.
- 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 SQFBLAN the same as SQFB-LAN?
Yes. Sun Hydraulics writes this part number as SQFBLAN. It is the model SQFB followed by the configuration code; hyphens, slashes and spaces are only dividers, so SQFBLAN, SQFB-LAN, SQFB LAN all refer to the same product.
Do you supply SQFBLAN in the UAE, GCC and India?
Yes. MultiFlow supplies genuine Sun Hydraulics cartridges, including SQFBLAN, 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 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.
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/SQFB
