Refcomp SP4H3500 Semi Hermetic Reciprocating Refrigeration Compressor
Product Advantages
360-Degree Rotatable Valves & Easy System Integration
The SP4H3500 semi hermetic reciprocating refrigeration compressor is equipped with suction and discharge shut-off valves capable of 360-degree rotation. This flexible valve layout simplifies piping orientation in tight equipment spaces, streamlining installation in commercial chillers and multi-compressor racks while easing routine maintenance access.
High-Precision Bearings & Dynamic Balance
Engineered with precision floating dynamic sleeve bearings and dynamic counterweights on the crankshaft, this 35HP semi hermetic reciprocating refrigeration compressor effectively absorbs rotational stress and vibration. The heavy-duty bearing design reduces journal friction and mechanical wear, ensuring high volumetric stability during continuous high-load refrigeration cycles.
Flexible Step Energy Regulation (100% / 50%)
Featuring two-stage capacity control at 100% and 50% steps, the unit allows cooling systems to dynamically align gas displacement with real-time thermal load demand. Operating at partial load during off-peak hours cuts power consumption and prevents unnecessary compressor short-cycling.
Applications
- Commercial Central HVAC: Powers high-capacity air-cooled and water-cooled liquid chiller assemblies for large commercial buildings.
- Industrial Process Cooling: Delivers heavy-duty fluid temperature control for plastic processing, chemical plants, and industrial manufacturing lines.
- Large Cold Storage Warehouses: Provides reliable medium and low-temperature cooling for food logistics hubs and agricultural storage.
- Supermarket Refrigeration Racks: Integrates cleanly into parallel multi-compressor rack configurations managing extensive display case networks.
Product Images
Technical Specifications
| Parameter |
Value |
| Model |
SP4H3500 |
| Rated power |
35HP/26.1 KW |
| Exhaust volume 50/60Hz |
102.9/123.5 m³/hr |
| Cylinders |
4 |
| Weight |
238 Kg |
| Oil Charge |
3.7 L |
| Energy regulation |
100,50% |
| Standard motor |
400V/3/50Hz, 460V/3/60Hz PW |
| Starting current PW/DOL |
178/290A |
| Max operating current |
56A |
Company Profile
Ruifujie brings over 20 years of expertise to the refrigeration industry as a modern, large-scale manufacturer and supplier. We specialize in scroll, reciprocating, rotary, semi-hermetic, and screw compressors, along with cold storage equipment, quick-freezing systems, and ice-making machinery. Supporting comprehensive OEM and ODM customization, Ruifujie exports reliable cooling solutions globally across Russia, the United States, the United Kingdom, the United Arab Emirates, Saudi Arabia, and other key international markets.
Packaging and Shipping
Frequently Asked Questions
Q1: How does the SP4H3500 semi hermetic reciprocating refrigeration compressor manage dynamic heat load changes in large cooling systems?
A1: It utilizes two-step capacity regulation (100% and 50%), allowing the compressor to step down displacement during reduced thermal load periods, preventing short-cycling and saving energy.
Q2: What feature helps reduce mechanical vibration during high-capacity 35HP operation?
A2: The compressor is engineered with dynamic counterweights on the crankshaft and high-precision floating sleeve bearings, which minimize rotational shock and lower running noise.
Q3: What electrical starting methods are supported by this 35HP unit?
A3: The unit supports Part-Winding starting on 400V/3/50Hz or 460V/3/60Hz supplies.
Q4: What is the delivery lead time for commercial bulk orders?
A4: Samples in stock can be dispatched within 3 days, while standard bulk production orders are completed and shipped within 10 to 15 working days.
Q5: What warranty protection is provided for Ruifujie compressors?
A5: All compressor units supplied by Ruifujie carry a standard 1-year product warranty.
Request Direct Wholesale Pricing
Consult with our technical engineering team to select the ideal compressor setup for your commercial HVAC or heavy-duty refrigeration project. Contact us today to receive a detailed proposal within 8 hours. Please specify your required Model, Quantity, Refrigerant, Voltage, Operating Conditions, and Project Requirements in your inquiry.
