3/4" 24V AC Stainless Steel Solenoid Valve N/O
Availability: In Stock
Technical Details
SKU
SZW-20K-24VAC
Position
Normally Open
Port Size
3/4" Female NPT
Voltage
24V AC
Body Material
Stainless Steel
Components
Stainless Steel
Seal Material
Viton® Diaphragm
Orifice Size
20 mm
Temp Range
15 to 250° F | -10 to 120°C
Pressure Range
0 to 90 psi
Flow Rate
Cv 7.6 (Appx 58 GPM @ 60 PSI)
Power
19 VA | 0.80 Amps
Coil Connection
DIN 43650B
Response Time
Fast Acting (Less than one second)
Duty Cycle
100% Duty at Rated Ambient Temperature
Suitable Media
Water – Air - Fuel
Weight
1 lb 10 oz
Height
4.70"
Length
2.65" port to port
Width
2.00"
Product Overview
The SZW-20K-24VAC is a 3/4" normally open stainless steel solenoid valve designed for automatic control of water, air, and other compatible media in commercial, residential, and industrial systems. Its 24V AC coil closes the valve when energized and allows it to return to the open position when power is removed. This fail-open operation makes it suitable for applications where flow needs to continue during a power interruption, including cooling-water circulation, bypass lines, recirculation systems, and draining or purging.
Constructed with a stainless steel body and components and a Viton® diaphragm, this 2-way valve features 3/4" female NPT ports and a 20 mm orifice. It has a Cv of 7.6 and a flow capacity of approximately 58 GPM at 60 psi. The operating pressure range is 0–90 psi, with a media temperature range of 15°F to 250°F. The 24V AC coil is rated at 19 VA, with a response time of less than one second and a 100% duty cycle within its rated ambient temperature and voltage limits.
Common Applications
- Industrial water control and process-water distribution
- Water treatment and filtration equipment
- Cooling-water circulation and equipment cooling loops
- Bypass and recirculation lines
- Gravity-fed draining, venting, and purging
- Humidifiers and water sprinkler systems
- Air compressors and pneumatic systems
- Fluid dispensing and dosing systems
Because this is a normally open valve, select it for systems where flow should continue when power is off. Confirm that this fail-open operation is appropriate for the application before installation.
Installation
- Install the valve in the direction indicated by the flow arrow on the body; it is a unidirectional valve.
- The SZW series can be mounted vertically or horizontally.
- Flush piping before installation and use an upstream filter to help prevent debris from interfering with the diaphragm or valve operation.
*Consult a chemical compatibility expert for correct seal and valve body material choice.
