-
- Seal Material:
N – Buna-N seals
- Assembly:
CNICXCN-ZEG/T3
-
- Material/finish:
/T3 – Ductile iron, Metric, clear zinc plated, Buna-N seals
- Assembly:
CNICXCN-ZEG/T3
-
- Assembly:
CBGBLHN-ZJH/Y3
-
- Material/finish:
/Y3 – Clear zinc plated ductile iron, Viton seals
- Assembly:
CBGBLHN-ZJH/Y3
-
- Assembly:
CNCCXCN-WRV/Y4
-
- Material/finish:
/Y4 – Ductile iron, black oxide finish, Viton seals
- Assembly:
CNCCXCN-WRV/Y4
-
- Assembly:
DTBFXCN-ABP/W3
-
- Material/finish:
/W3 – Ductile iron, Metric, clear zinc plated, Viton seals
- Assembly:
DTBFXCN-ABP/W3
-
- Assembly:
CBGBLHN-H7E/Y3
-
- Material/finish:
/Y3 – Clear zinc plated ductile iron, Viton seals
- Assembly:
CBGBLHN-H7E/Y3
-
- Seal Material:
N – Buna-N seals
- Assembly:
CAELLGN-BB2/Y4
-
- Material/finish:
/Y4 – Ductile iron, black oxide finish, Viton seals
- Assembly:
CAELLGN-BB2/Y4
RBAB-ABN – Sun Hydraulics Air-controlled, direct-acting relief valve – pilot capacity
Roll over image to zoom in
Part number: RBABABN · RBAB-ABN · RBAB ABN
Air-controlled, direct-acting relief valve – pilot capacity. Cavity T-3A, capacity .5 gpm (2 L/min.). Genuine Sun Hydraulics cartridge — MultiFlow is an authorized distributor.
RBAB-ABN overview
RBABABN (RBAB-ABN, RBAB ABN) is a Sun Hydraulics Sun Hydraulics Air-controlled, direct-acting relief valve - pilot capacity, rated .5 gpm (2 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.
| RBABABN | Buna-N sealsBuna-N |
|---|---|
| RBABABV | Viton sealsViton |
Specifications
| Cavity | T-3A |
|---|---|
| Series | 2 |
| Capacity | .5 gpm (2 L/min.) |
| Maximum Operating Pressure | 2000 psi (140 bar) |
| Pilot Ratio | 20:1 |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 5 drops/min. (0,3 cc/min.) |
| Response Time - Typical | 2 ms |
| Valve Hex Size | 1 1/8 in. (28,6 mm) |
| Valve Installation Torque | 45 - 50 lbf ft (61 - 68 Nm) |
| Model Weight | .50 lb (0,25 kg) |
| Seal kit - Cartridge | Viton: 990203006 |
How to read RBABABN
Sun part numbers are the model followed by one code per option. Hyphens, slashes and spaces are only dividers, so RBABABN, RBAB-ABN, RBAB ABN are the same part.
| Model | RBAB — Sun Hydraulics Air-controlled, direct-acting relief valve - pilot capacity |
|---|---|
| Control | A — External 1/4 NPTF Port |
| Operating Range | B — 50 - 1500 psi (3,5 - 105 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
- A — External 1/4 NPTF Port
Operating Range options
- B — 50 - 1500 psi (3,5 - 105 bar)
Seal Material options
- N — Buna-N
- V — Viton
Manifold & standard assemblies
Sun manifolds for cavity T-3A (238)
- CA3 Sun Hydraulics Ninety degree with gauge port Line mount manifoldRBABABN-CA3 — request assembly
- CA4 Sun Hydraulics Ninety degree with gauge port Line mount manifoldRBABABN-CA4 — request assembly
- CA5 Sun Hydraulics Ninety degree with gauge port Line mount manifoldRBABABN-CA5 — request assembly
- CAA Sun Hydraulics Ninety degree Line mount manifoldRBABABN-CAA — request assembly
- CAB Sun Hydraulics Ninety degree Line mount manifoldRBABABN-CAB — request assembly
- CAC Sun Hydraulics Ninety degree Line mount manifoldRBABABN-CAC — request assembly
- CAD Sun Hydraulics Ninety degree Line mount manifoldRBABABN-CAD — request assembly
- CAE Sun Hydraulics Ninety degree with gauge port Line mount manifoldRBABABN-CAE — request assembly
- CAH Sun Hydraulics Ninety degree Line mount manifoldRBABABN-CAH — request assembly
- CAI Sun Hydraulics Ninety degree Line mount manifoldRBABABN-CAI — request assembly
- CAJ Sun Hydraulics Ninety degree Line mount manifoldRBABABN-CAJ — request assembly
- CAK Sun Hydraulics Ninety degree Line mount manifoldRBABABN-CAK — request assembly
Technical features
- Maximum air pressure should not exceed 150 psi (10 bar).
- Pressure settings are insensitive to back pressure at the tank port (port 2). Back pressure should not exceed 1000 psi (70 bar).
- Capable of providing explosion proof remote control of the pressure setting, the hydraulic setting is directly porportional to the air setting at a ratio of 20:1 (hydraulic:air).
- 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 RBABABN the same as RBAB-ABN?
Yes. Sun Hydraulics writes this part number as RBABABN. It is the model RBAB followed by the configuration code; hyphens, slashes and spaces are only dividers, so RBABABN, RBAB-ABN, RBAB ABN all refer to the same product.
Do you supply RBABABN in the UAE, GCC and India?
Yes. MultiFlow supplies genuine Sun Hydraulics cartridges, including RBABABN, 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.
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 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?
Only external seals are serviceable. Sun offers replacement seal kits for all cartridge models. The applicable kit part number can be found in the product page's Technical Data table or by using our Cartridge Seal Kit search function located under Accessories. Please note: Converting the external seals from one material to another does not ensure fluid compatibility with that material due to the existence of internal seals within the cartridge.
Manufacturer reference: https://www.sunhydraulics.com/model/RBAB
