Pilot operated proportional pressure reducing relief valve 23BL-72-30
Product Features
1. Manual override option.
2. Air Release option.
3. 12 and 24 volt coils standard.
4. Industry common cavity.
5. Optional waterproof E-Coils rated up to IP69K.
Product Specifications
| Operating Pressure | 240 bar (3500 psi) |
| Maximum Control Current | 1.10 A for 12 VDC coil; 0.55 A for 24 VDC coil |
| Relief Pressure Range from Zero to Maximum Control Current | A: 6.9 to 207 bar (100 to 3000 psi); B: 6.9 to 159 bar (100 to 2300 psi); C: 6.9 to 117 bar (100 to 1700 psi) |
| Rated Flow | Coil de-energized, Cartridge only, DP=22.8 bar (330 psi), Rated flow from ① to ③ : 56.8 lpm (15 gpm) |
| Maximum Pilot pressure | 0.76 lpm (0.2 gpm) |
| Temperature | -40 to 120℃ |
| Fluids | Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 sus) |
| Installation Recommendation | When possible, the valve should be mounted below the reservoir oil level. This will maintain oil in the armature preventing trapped air instability. If this is not feasible, mount the valve horizontally for best results.. |
| Cartridge | Weight: 0.25 kg. (0.55 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Seal:O-rings and back-up rings. Polyurethane seals recommended for pressures over 240 bar (3500 psi). |
| Standard Ported Body | Weight: 0.16 kg. (0.35 lbs.); Anodized high-strength 6061 T6 aluminum alloy, rated to 240 bar (3500 psi); Ductile iron and steel bodies available |
| Standard Coil | Weight: 0.27 kg. (0.60 lbs.); Unitized thermoplastic encapsulated, Class H high temperature magnetwire. |
| E-Coil | Weight: 0.41 kg. (0.90 lbs.); Perfect wound, fully encapsulated with rugged external metal shell; Rated up to IP69K with integral connectors. |
Product Operation Symbol
The Pilot operated proportional pressure reducing relief valve 23BL-72-30 allows flow from ① to ② until sufficient pressure is present at ① to open the pilot section by offsetting the electrically induced solenoid force. Increasing electric current will increase the control (reduced) pressure at ①. With no current applied to the solenoid, the valve will relieve pressure at ① at approximately 100 psi, regardless of pressure at ②.
The Pilot operated proportional pressure reducing relief valve 23BL-72-30 has an optional manual override feature. This allows the valve to be set when the electric supply is lost. The manual setting is added to the electric setting, so when using the manual override feature to establish a minimum setting, care is required to prevent the system from becoming over-pressurized.
Performance/Dimension
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