XQV MBV80-B Prestressed Vacuum Pump – High‑Performance Vacuum Pump for Post‑Tensioning Grouting
Oil‑Sealed Rotary Vane Vacuum Pump for Void‑Free Duct Grouting
The XQV MBV80‑B prestressed vacuum pump is specifically designed for post‑tensioning duct grouting. Its core function is to create a negative pressure environment by pre‑evacuating the duct before grouting, significantly improving grouting quality. The pump removes air, residual moisture and impurities from the duct, preventing voids or bubbles caused by trapped air. The negative pressure also reduces slurry flow resistance, allowing cement grout to fill long or multi‑bend ducts more completely.
Typically used together with screw or piston grouting pumps, it forms a “vacuum first, then grout” process — widely applied in bridge and high‑rise building post‑tensioning works (box girders, floor prestressing tendons). It is an essential auxiliary tool to ensure prestressed system durability (preventing steel corrosion).
🌀 High Vacuum Degree
Ultimate vacuum reaches 0.097 MPa, exceeding common railway standard (‑0.092 MPa), ensuring thorough air extraction.
💨 Large Suction Capacity
Max. suction rate 80 m³/h, suitable for long‑span ducts (≥50 m) and multi‑bend profiles (precast beams, continuous beams).
⚙️ Oil‑Sealed Rotary Vane Design
Stable and reliable, with low noise (≤ 80 dBA) and continuous operation capability.
💧 Integrated Water Cooling
4 L/min water supplement prevents overheating; suitable for long‑duration grouting cycles.
🛡️ Corrosion‑Resistant Construction
Built to withstand humid and chemically aggressive environments common in grouting works.
| Model | Max. Suction Rate (m³/h) | Ultimate Vacuum (MPa) | Pump Speed (r/min) | Motor Power (kW) | Water Supply (L/min) | Noise (dBA) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| MBV80-B | 80 | 0.097 | 2850 | 4 | 4 | ≤80 | 90 |
- Bridge & Highway Prestressed Ducts: Vacuum‑assisted grouting for box girders, segmental beams, and cable‑stayed bridges.
- High‑Rise Building Post‑Tensioning: Slab and beam duct evacuation to ensure void‑free grouting.
- Long‑Span & Multi‑Curve Ducts: Precast beam tendons, continuous beam ducts (>50 m length, multiple bends).
- Railway Prestressed Structures: Compliant with TB/T3192‑2018 requirements for grouting quality.
- General Grouting Systems: Works with screw/piston grouting pumps as part of an integrated “vacuum‑then‑grout” system.
※ Parameters for reference only. Subject to change without notice. Final interpretation right belongs to our company.
Workshop
Our Manufacturing Base – Liuzhou Xuanqiao Prestressed Machinery Co., Ltd.</p >
Located in Liuzhou, Guangxi – a key industrial hub for prestressed technology – our modern workshop covers over 10,000㎡. We operate CNC machining centers, automated assembly lines, and precision testing equipment to ensure consistent quality.</p >
Every batch of raw material is inspected, and finished products (anchors, jacks, pumps, ducts) are tested in our in‑house laboratory for mechanical performance and pressure resistance. We are certified under ISO 9001:2015 and comply with FIP international standards.</p >
Annual capacity: 6 million anchor holes and 1,000+ sets of hydraulic equipment. Our experienced technicians and engineers follow strict SOPs to guarantee reliability.</p >
We maintain sufficient raw material inventory and finished goods for fast delivery. Continuous investment in equipment and training keeps us at the forefront of prestressed manufacturing – because a strong factory means reliable products and long‑term trust.</p >
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