HNR-HDB Meet ISO 16028 Standard Fittings
usage instruction
Pressure relief: Pull the pull rod to release pressure from the quick coupling before connection.
notice
When the auxiliary tool is not in a stationary position.
When the auxiliary tool is in an active state (pressure relief may cause the tool to move unexpectedly and dangerously).
The female coupling should not be used alone under high frequency pulse pressure.
Do not connect or disconnect under the following conditions:
When there is hydraulic oil flow or dynamic pressure in the circuit—only connect or disconnect under residual pressure.
Do not connect or disconnect the quick coupling when the hydraulic oil temperature in the circuit exceeds 80° C(176° F).
When the quick coupling is not connected, it is recommended to use a dust cap.
To prevent contamination and preserve the internal valve's functionality, the hydraulic system should be kept free of contaminants.
Applications
- ● HDB Modular valve series is the latest Songqiao innovation designed to meet the requirements of the mobile equipment market.
- ● Designed with the feedback from the market and with the major OEM collaboration, it has a residual pressure relief system which allows an operator to connect and
disconnect the two circuit lines with residual pressure,both in the male and in the female.
- ● HDB modular valve series is equipped with ISO 16028 interchangeable flat face couplings,has a modular design for multiple port options, and allows for a wide range of coupler sizes: 1 / 2 (04), 3 / 4(08)
benefits
● Interchangeability of Quick Connectors: Equipped with ISO16028 quick connectors, offering various sizes and specifications.
● Quick Connector Type: Flat face sealing.
● Locking Mechanism: Steel ball locking.
● Coupling System: Push-in connection.
● Uncoupling System: Pull-down outer sleeve of the female connector.
● Pressurized Coupling: Coupling after relieving pressure using a pull rod.
● Pressurized Uncoupling: Uncoupling after relieving pressure using a pull rod.
● Sealing Material: Standard NBR (Nitrile Rubber).
● Anti-extrusion Ring: PTFE (Polytetrafluoroethylene).
technical features and options
-
● A user-friendly pressure relief system allows easy coupling or uncoupling even with residual pressure present.
- ● Before coupling or uncoupling, the residual pressure must be relieved. With no pressure during coupling or uncoupling, the process is safe, effortless, and minimizes the risk of injury.
- ● The flat surface is easy to clean, helping to reduce contamination from debris entering the hydraulic circuit.
- ● There is minimal hydraulic oil loss during coupling or uncoupling, reducing environmental pollution.
- ● Only a small amount of air is introduced during coupling or uncoupling, enhancing the hydraulic system's functionality.
- ● The patented internal valve design results in low pressure drop, maintaining circuit efficiency.
- ● Good resistance to pressure pulses.
- ● Compact, precise, and flexible (allowing use of different sizes of quick connectors).
- ● Safe and simple to use.
PERFORMANCE
FLOW DATA
|
（in.） Body >Size |
(PSI) Rated Pressure |
（GMP） Rated Flow |
|
1/2（04） |
4350 |
12 |
|
3/4（08） |
4350 |
28 |
SEAL ELASTOMER DATA
| Seal Elastomer | Max. Operation Temperature Range |
| Nitrile (NBR) | -20℃ to +120℃ |
| EPDM | -54° C to +149° C/-65° C to +300° F |
| FKM | -29° C to +204° C/-15° F to +400° F |
| ISO | PART NO. | A | B | C | D | E | F | G |
| 12.5 | HNR-HDB-04 | 184 | S44.45六角 | S50.8六角 | S25.4六角 | Φ38 | Φ24.54 | Φ19.75 |
| 19 | HNR-HDB-08 | 188 | S44.45六角 | S50.8六角 | S25.4六角 | Φ48 | Φ29.95 | Φ19.75 |