ZSJY 1.6BP Universal Pressure Switch
The ZSJY 1.6BP is a high-precision, universal waterflow alarm and supervisory pressure switch manufactured by Ningjin APC Industries. It is specifically engineered to detect pressure changes in automated fire protection sprinkler systems—including wet pipe, dry pipe, pre-action, and deluge valve systems
Description
⚙️ Core Technical Specifications
| Parameter | Specification Details |
|---|---|
| Model Designation | ZSJY 1.6BP |
| Maximum Working Pressure | 300 PSI (20.7 bar) |
| Factory Operating Settings | Actuation point: 5 to 7 PSI (non-adjustable) |
| Differential Pressure | 1 PSI standard |
| Pressure Connection | 1/2″ NPT male thread (constructed from heavy-duty Nylon) |
| Conduit Wiring Inlet | 1/2″ opening |
| Operating Temperature Range | -40°C to 60°C (-40°F to 140°F) |
| Enclosure Rating | IP66 dust-proof and waterproof |
🧱 Material & Mechanical Composition
-
- Outer Enclosure / Cover: Heavy-duty, die-cast aluminum alloy coated in fire-protection red.
- Base Plate: Corrosion-resistant galvanized carbon steel.
- Sensing Diaphragm: Double-layer EPDM diaphragms for enhanced fatigue life and high-accuracy pressure tracking.
- Security Hardware: Equipped with tamper-proof fasteners on the outer cover to prevent unauthorized adjustment.
⚡ Electrical Configuration & Contacts
-
- Switch Architecture: Double SPDT (Single Pole Double Throw) switch configuration.
- Dual-Contact Safety: Provides “double insurance”—if one contact network encounters a fault, the secondary backup circuit guarantees signal continuity.
- Contact Load Capacity:
-
- Alternating Current: 15 Amps @ 125 / 250 VAC
- Direct Current: 2.5 Amps @ 30 VDC
-
- Integration Destination: Easily links directly to auxiliary alarm bells, local water motor gongs, or building Fire Alarm Control Panels (FACP).
📜 Standards & Approvals
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- Certifications: UL Listed and FM Approved.
- Compliance Standards: Built and evaluated strictly in accordance with UL 260 criteria for fire protection system safety signaling.
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