3/8'' 24V AC Electric Stainless Steel Solenoid Valve N/O
Availability: In Stock
Technical Details
SKU
SZW-10K-24VAC
Position
Normally Open
Port Size
3/8" Female NPT
Voltage
24V AC
Body Material
Stainless Steel
Components
Stainless Steel
Seal Material
Viton® Diaphragm
Orifice Size
15 mm
Temp Range
15 to 250° F / -10 to 120°C
Pressure Range
0 to 90 psi
Flow Rate
Cv 3.5 (Appx 27 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 - *Etc
Weight
1 lb 8.69 oz
Height
4.29"
Length
2.36" port to port
Width
1.80"
CAD Files
Available upon Request
Product Overview
The SZW-10K-24VAC is a heavy-duty 3/8" 304 stainless steel solenoid valve engineered for fail-open, zero-differential fluid control in 24V AC low-voltage systems. Featuring a Viton® (FKM) diaphragm seal and a direct-assisted lift mechanism, this 2-way Normally Open (N/O) valve remains open when de-energized to permit unrestricted flow at 0 PSI, closing in less than one second when 24V AC power is applied.
Normally Open Application & Media Notice:
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- This valve is Normally Open (remains open when de-energized and closes when energized). It is designed specifically for fail-open setups, gravity-fed drains, freeze/overheat protection loops, and safety bypass lines.
- Equipped with a Viton® (FKM) diaphragm rated for media up to 250°F, diesel fuel, glycol, weak acids, and harsh fluids.
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Key Features
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304 Stainless Steel & Viton® Construction: High chemical, corrosion, and temperature resistance for aggressive media, potable water, and industrial environments.
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Normally Open (Fail-Open) Operation: Keeps fluid flowing or lines drained during power interruptions—essential for emergency dump lines and freeze-protection circuits.
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24V AC Low-Voltage Control: Integrates directly with standard HVAC transformers, Building Management Systems (BMS), and irrigation controllers using an IP65-rated DIN electrical connector.
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Zero Differential Operation: Direct-assisted design operates reliably from 0 PSI (gravity feed) up to maximum working pressure.
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Fast-Acting & 100% Duty Cycle: Closes in under one second when energized and rated for continuous-duty operation.
Common Applications
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HVAC equipment, solar thermal overheat dump lines, cooling loops, and humidification drains
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Gravity-fed water tank drains, reservoir dumping, and agricultural irrigation flushes
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24V AC automated hydroponics, fertigation loops, and liquid chemical bypass manifolds
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Commercial beverage equipment, steam loops, and high-temp sanitizing dump lines
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Building Management Systems (BMS), compressed air dump loops, and process water lines
Installation
- Align media flow with the directional arrow cast into the 304 stainless body.
- Connect 24V AC power using the included DIN electrical connector.
- For optimal service life and reliable seal closure, especially in gravity-fed drain lines, mount the valve with the coil facing upward.
- Install an inline strainer upstream to keep sediment off the Viton® diaphragm.
