1-1/4" 12V DC Electric Stainless Steel Solenoid Valve
Availability: In Stock
Technical Details
SKU
SZW-32-12VDC
Position
Normally Closed
Port Size
1-1/4" Female NPT
Voltage
12V DC
Body Material
Stainless Steel
Components
Stainless Steel
Seal Material
Viton® Diaphragm
Orifice Size
32 mm
Temp Range
5 to 250°F
Pressure Range
0 to 90 psi
Flow Rate
Cv 24 (Appx 184 GPM @ 60 PSI)
Power
21 W / 1.75 Amps
Coil Connection
Lead Wires
Response Time
Fast Acting (Less than one second)
Duty Cycle
100% Duty at Rated Ambient Temperature
*Suitable Media
Water – Air - Fuel - *Etc
Weight
3 lb 15.49 oz
Height
6.02"
Length
4.13" port to port
Width
3.25"
Product Overview
The SZW-32-12VDC is a high-flow 1-1/4" stainless steel solenoid valve engineered for automatic, zero-differential flow control in 12V DC battery-powered, solar, mobile, and industrial systems. Built with a heavy-duty 304 stainless steel body and a Viton® (FKM) diaphragm seal, this 2-way normally closed valve features a semi-direct lift mechanism that operates reliably from 0 PSI up to maximum working pressure, opening automatically when energized by a 12V DC power source.
Media & Temperature Notice:
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- Equipped with a premium Viton® (FKM) diaphragm, this valve is rated for fluid temperatures up to 250°F.
- Viton® provides superior chemical resistance to diesel fuel, oils, glycol, weak acids, and aggressive fluids that degrade standard NBR rubber.
- Always verify chemical compatibility with both the 304 stainless steel body and Viton® seal prior to installation.
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Key Features
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High-Flow 1-1/4" 304 Stainless Steel Construction: Delivers high volumetric throughput with minimal pressure drop for process water, aggressive media, and outdoor environments.
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12V DC Battery & Solar Integration: Non-polarized lead wires connect directly into 12V vehicle electrical systems, solar charge controllers, battery banks, and low-voltage control panels.
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Zero Differential Operation: Semi-direct lift design opens and seals reliably from 0 PSI (gravity feed) up to maximum working pressure.
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Normally Closed Fail-Safe: Valve automatically returns to the closed position during power loss to prevent unintended fluid discharge.
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Durable Viton® Diaphragm: Handles high-temperature fluids (up to 250°F), diesel, oils, and mild chemicals without swelling or deteriorating.
Common Applications
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Bulk diesel fuel transfer, mobile fuel rigs, and auxiliary tank management
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Rainwater harvesting, high-volume well water automation, and agricultural irrigation manifolds
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Solar-powered water storage tank filling, gravity-fed drains, and off-grid distribution
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Commercial reverse osmosis (RO), water filtration, and high-capacity process water loops
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Heavy equipment washdown stations, mobile dust suppression, and fluid transfer
Installation
- Align media flow with the directional arrow cast into the stainless valve body.
- The non-polarized 12V DC wire leads can be connected in either orientation. Ensure adjacent piping is properly supported to avoid stress on the 1-1/4" NPT threads.
- For optimal service life, mount the valve with the coil facing upward.
- Install a Y-strainer or inline filter upstream to keep debris out of the diaphragm chamber.
