458P
High-pressure solenoid valve · 2/2 normally closed · Pilot-piston
DEMA 458P is a 2/2 normally closed pilot-piston high-pressure solenoid valve with a 1″ brass body and stainless steel piston — the large-port version of the 454P — for on/off control in high-pressure spray and water circuits. Because the pilot port sits in a chamber separate from the piston, the plunger works closer to the top plug with greater force and a higher opening pressure. Differential pressure 10–1200 psi with Cv 11.10 and approx. 85.98 GPM at 60 psi; an 80-mesh strainer is recommended ahead of the valve, and a DC coil must be derated to 900 psi. Confirm coil voltage and configuration code; price, lead time and availability are subject to confirmation.
Specifications
- Brand
- DEMA
- Model
- 458P
- Size / rating
- 1″ NPT
- Material
- Brass
- Product configuration
- Pilot-piston · 2/2 normally closed
- Series
- DEMA 458 Series · High pressure
- Function
- 2/2 normally closed
- Operating principle
- Pilot-piston; pilot port in a chamber separate from the piston
- Body material
- Brass
- Piston & sleeve
- Stainless steel piston with brass sleeve; the PS suffix (458PS) designates a stainless steel piston and sleeve
- Seal material
- PTFE (Teflon)
- Port thread
- 1″ NPT
- Orifice diameter
- 0.939 in (approx. 23.85 mm)
- Flow coefficient
- Cv 11.10
- Flow
- approx. 85.98 GPM at 60 psi
- Pressure differential
- Min. 10 psi (0.68 bar); max. 1200 psi (81.6 bar)
- Max. rated pressure
- MRP 1500 psi (103 bar)
- DC derating
- Derate to 900 psi for reliable operation with a DC coil
- Suitable media
- Water (the series is intended for water only); not for hazardous, corrosive or explosive fluids
- Fluid temperature
- Max. 200 °F (93.3 °C)
- Ambient temperature
- Max. 120 °F (48.8 °C)
- Coil
- AC 15 W at 24 / 120 / 208 / 240 V 50/60 Hz; DC 12 V 18 W, 24 V 24 W
- Installation
- Horizontal or vertical lines; not with the coil below the body
- Line requirement
- 80-mesh or finer strainer ahead of the valve
- Repair kit
- 41-33 (brass piston, for 458P); 41-33-2 (stainless steel piston, for 458PS)
- Rating notes
- Common configuration shown; confirm coil voltage, connection and configuration code for the actual application.
Please note: The specifications above are compiled from manufacturer published datasheets, official websites and other public sources, for reference only, and are not a basis for acceptance or inspection. Actual parameters, dimensions and configuration are subject to the latest manufacturer datasheet and the delivered goods; where any discrepancy exists, the manufacturer data shall prevail. Contact us if you need the original datasheet or confirmed data for ordering.
