ASCO H262K641S1EM0E7 – 15 mm Magnetic-Latching Solenoid Valve (Series 262)
The ASCO H262K641S1EM0E7 is a 2/2-way direct-acting magnetic-latching solenoid valve designed for low-power water and fluid-control systems. Built with a brass body and 15 mm compression ends, it combines compact design with reliable operation even in battery-powered or energy-saving applications.
Manufactured under the trusted Emerson ASCO Series 262 line, this valve offers exceptional durability, rapid response, and high-quality sealing performance for industrial, commercial, and OEM installations.
Technical Overview
General Specifications
Operation: 2/2-way direct-acting, magnetic-latching
Port Connection: 15 mm compression ends
Body Material: Brass (CW617N)
Seal Material: EPDM or NBR (depending on version)
Coil Voltage: 6 V DC (suffix E7), optional 3 V DC (suffix CD)
Power Consumption: < 2 W (latching type)
Flow Coefficient (Kv): Approx. 2.5 L/min @ 1 bar ΔP
Pressure Range: 0 – 10 bar (g)
Temperature Range: 0 °C – + 80 °C
Mounting Position: Any, preferably coil vertical
Protection Rating: IP65 with correctly fitted connector
Design & Construction
Latching Coil System (Bi-Stable Design)
Unlike standard continuously-energised solenoid valves, the ASCO H262K641S1EM0E7 features a magnetic-latching coil that only requires a brief electrical pulse to change state.
This provides major benefits:
Minimal power consumption — ideal for battery or solar-powered systems
No continuous heating — longer seal life and reduced energy loss
Stable operation in mobile, remote, or low-voltage control systems
Durable Brass Body
Machined from high-grade CW617N brass, the valve body offers excellent resistance to corrosion and mechanical wear. Compression ends simplify installation into domestic or commercial water systems without threaded joints.
View our Asco 262 range
Applications & Typical Uses
Common Industries
Water management and WRAS approved installations
Automatic flush, urinal, and wash room control systems
OEM water dispensers, vending, and dosing units
Building services and smart-control systems
Battery-operated irrigation and environmental monitoring
Why Choose ASCO H262K641S1EM0E7
Extremely low-power latching coil operation
Compact footprint for tight installations
Reliable ASCO construction and sealing technology
Simple maintenance and easy spare-part support
Proven in continuous-duty industrial service
Variants & Near-Equivalents
| Model Code | Voltage | Function | Port / End Type | Seal Material | Notes |
|---|---|---|---|---|---|
| H262K641S1EM0E7 | 6 V DC | Latching | 15 mm compression | EPDM | Standard version |
| H262K641S1EM0CD | 3 V DC | Latching | 15 mm compression | NBR | Low-voltage variant |
| H262K643S1EM0E7 | 6 V DC | Latching | ½″ BSP female | EPDM | Threaded ports |
| H262K644S1EM0E7 | 6 V DC | Latching | ½″ BSP male | EPDM | Alternative body style |
(Always confirm voltage and connection before ordering. Other voltages and seal options available on request.)
Installation & Wiring
Wiring Method
Connect polarity as indicated on the coil body: positive pulse = open, reverse pulse = close
Use a momentary pulse (100–300 ms) for state change
Avoid prolonged energisation to prevent coil damage
Connector type: DIN 43650 Form A (IP65 when sealed)
Maintenance Notes
Ensure system is flushed before installation
Periodically inspect compression seals for wear
Replace O-rings and coil gaskets during service intervals
Datasheet & Downloads
Available Documents
ASCO Series 262 Product Catalogue (PDF)
H262K641S1EM0E7 Individual Datasheet
Installation & Maintenance Manual
(All downloads available in the “Documents” tab above or by request from our technical team.)
Alternatives & Cross-References
If you require an alternative with similar performance, consider:
X210525720102E7 - equivalent 15mm Asco latching valve - high flow
LPU225D04 - equivalent 1/2 BSP WRAS Brass Latching Valve - high flow - low price
1175BB - 15mm Nylon Latching WRAS valve - very low price
LPU22504 - equivalent 1/2 BSP Brass Latching Valve - high flow - low price
Fast Delivery & Support
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FAQ
What is a magnetic-latching solenoid valve?
A latching solenoid valve, or bi-stable valve, uses a magnetic latch to stay open or closed without constant power. It only needs a brief electrical pulse to switch state, making it highly efficient for battery or low-energy systems and reducing heat and power consumption.
Is the H262K641S1EM0E7 WRAS-approved?
Yes Yes. The ASCO H262K641S1EM0E7 is WRAS-approved for use with potable water systems under WRAS Approval Number 2010076. It features EPDM seals and a brass body suitable for mains water, plumbing, and sanitary installations requiring full UK drinking-water compliance.
Can this valve be used on battery systems?
Yes. The ASCO H262K641S1EM0E7 uses a low-power magnetic-latching coil that only needs a brief pulse to change state. This makes it perfectly suited for battery-powered, solar, or remote control systems where continuous energisation would quickly drain power.
Need Help?
Contact our technical sales team for compatibility, replacement, or cross-reference enquiries.