High Limit Pressure Control Switch for Steam Boiler
Product Overview
The high limit pressure control switch for steam boiler is a safety‑critical component designed to interrupt power when boiler pressure exceeds a pre‑set threshold. Engineered for continuous operation in industrial heating, power‑generation, and process‑plant environments, the switch provides instantaneous shut‑off to protect vessels, piping, and downstream equipment from over‑pressure damage. Its robust construction, adjustable set‑point, and plug‑in wiring make it a plug‑and‑play solution for new installations and retrofit projects alike.
Application Scenarios
- Large‑scale district heating plants where steam pressure must be kept below 2.5 MPa.
- Industrial process lines (e.g., food‑processing, petrochemical) that use steam for sterilisation or heating.
- Power‑generation turbines that rely on boiler steam as the primary working fluid.
- Marine and offshore platforms where space‑constrained boiler rooms require compact, reliable protection devices.
Technical Specifications
| Parameter | Typical Range | Custom Options |
|---|---|---|
| Pressure Set‑point | 0.5 MPa – 3.0 MPa | 0.1 MPa increments, user‑adjustable via calibrated screw |
| Electrical Rating | AC 250 V, 5 A | Optional DC 24 V, 10 A |
| Operating Temperature | ‑20 °C to +85 °C | Extended range to +120 °C on request |
| Material | Stainless‑steel (AISI 304) housing | AISI 316 for higher corrosion resistance |
| Duty Cycle | Continuous (100 % rated) | Optional 50 % duty for low‑load applications |
All parameters can be fine‑tuned during pre‑production so that the final unit matches the exact safety envelope of your boiler system.
Competitive Advantages
- Reliability First: Designed for 24/7 operation with a sealed spring‑loaded actuator that resists dust, oil, and steam condensate.
- Fast Response: Mechanical snap‑action closes the circuit within 5 ms of exceeding the set‑point, surpassing many electronic equivalents.
- Regulatory Compliance: Meets IEC 61010, ATEX‑II 3G, and ISO 9001 quality‑management standards, ensuring acceptance in regulated plants.
- Easy Integration: Standard 3‑pin terminal block, optional PLC‑ready output, and clear “ON/OFF” indicator LED for quick wiring and diagnostics.
- Customization Capability: OEM partners can request bespoke enclosure colors, engraved serial numbers, or alternate mounting brackets without additional tooling cost.
FAQ about high limit pressure control switch for steam boiler
What is the minimum order quantity (MOQ)?
Our standard MOQ is 50 units, which covers the tooling and testing costs for a single production run. Larger volumes qualify for tiered pricing.
Can the pressure set‑point be customized?
Yes. The set‑point range is adjustable in 0.1 MPa increments, and we can pre‑calibrate each unit to a specific value specified in the purchase order.
What is the typical lead time?
For standard configurations the lead time is 15–45 days after order confirmation, depending on order size and current production schedule.
Is there a warranty?
All units ship with a 24‑month limited warranty covering defects in material and workmanship, backed by our global after‑sales network.
Get Your Quote Today
Ready to secure your boiler system with a proven safety device? Contact our engineering sales team now to discuss specifications, pricing, and delivery options. Email us or call +1‑800‑555‑0199 for an immediate, no‑obligation quotation.