**Product Specifications:**
- **Model No.:** Sucker Rod Pump
- **Pump Bore:** 125–375 mm
- **Plunger Length:** 2–7 ft
- **Trademark:** Zhongshi
- **Transport Package:** Seaworthy Packing
- **Specification:** API
- **Origin:** China
- **HS Code:** 8413
**Description:**
Compared to conventional tubing pumps, our sucker rod pump offers superior performance in terms of corrosion resistance and anti-friction properties. The plunger is nickel-plated on an alloy base, while the inner wall of the barrel is coated with hard cadmium. Key components such as the valve hood and valve ball are made from materials that provide excellent mechanical performance and corrosion resistance. As a result, this series of pump has a significantly longer service life compared to traditional models.
**Working Principle:**
During the upstroke, the plunger moves upward due to fluid pressure from the top tube, causing both the top and bottom traveling valves to close. When the stroke begins, oil flows through the inflow valve under different pressures and enters the barrel via the standing valve. During the downstroke, oil-fluid pressure drives the traveling valve, allowing oil to flow through the inner hole of the plunger from the bottom to the top.
**Machinery Peculiarity:**
This pump consists of several key parts: the pump tubing, plunger, coupling-extension, standing valve, a plastic sealing device (the upper one), and a mechanical sealing device (the lower one). You can choose either of the two sealing devices based on your needs.
**Technical Data Table:**
| Diameter (mm) | Barrel Length (m) | Plunger Length (m) | Tube Size (in) | Sucker Rod Size | Pump Constant (m³/d) |
|---------------|-------------------|--------------------|----------------|------------------|----------------------|
| 28 | 3.3–9.5 | 0.6–6.9 | 2 7/8 | 3/4 | 0.877 |
| 32 | 3.3–9.5 | 0.6–6.9 | 2 7/8 | 3/4 | 1.140 |
| 38 | 3.3–9.5 | 0.6–6.9 | 2 7/8 | 3/4 | 1.642 |
| 44 | 3.3–9.5 | 0.6–6.9 | 2 7/8 | 3/4 | 2.235 |
| 50 | 3.3–8 | 0.6–5.4 | 2 7/8 | 3/4 | 3.012 |
| 56 | 3.3–8 | 0.6–5.4 | 2 7/8 | 3/4 | 3.694 |
| 70 | 3.3–8 | 0.6–5.4 | 3 1/2 | 7/8 | 5.518 |
| 95 | 3.3–6.6 | 0.6–1.8 | 4 1/2 | 1 | 9.128 |
Our pump is designed for durability, efficiency, and ease of maintenance, making it ideal for use in various oil extraction environments. Whether you're looking for a reliable solution for deep well pumping or need a system that can withstand harsh conditions, our product is built to meet those demands.
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