Rexroth Type Axial Piston Variable Pump A7VK Series 10 Size 12 & 28 Polyurethane Metering Pump

Bokin Electro-Hydraulic Technology (Foshan) Co., Ltd. is one of the leading manufacturers and suppliers of rexroth type axial piston variable pump a7vk series 10 size 12 & 28 polyurethane metering pump in China. If you're going to wholesale bulk durable rexroth type axial piston variable pump a7vk series 10 size 12 & 28 polyurethane metering pump made in China, welcome to get pricelist from our factory. All customized products are with high quality and competitive price.

• ▶ Polyurethane-Certified Fluid Compatibility
  The A7VK is explicitly approved for pumping polyol and isocyanate - the two reactive components of polyurethane systems. FKM seals with PTFE shaft seals and special surface treatment resist chemical attack and corrosion, making the pump suitable for continuous duty in metering and mixing equipment without premature seal degradation.

  ▶ Precision Manual Metering Control
  The MA control uses a handwheel-driven threaded spindle to steplessly adjust displacement from Vg min to Vg max, with an integrated precision display and a standard clamp unit that prevents accidental drift. This gives operators direct, repeatable control of mixing ratios in polyurethane foam, elastomer, and coating applications.

  ▶ Double Shaft Seal with Barrier-Fluid Monitoring
  A double shaft seal arrangement with dedicated flushing chamber is combined with barrier-fluid ports U1–U4. By connecting a barrier-fluid monitor, operators can detect seal wear before process fluid reaches the environment - a critical safety feature when handling isocyanate.

  ▶ Open or Closed Design for Process Flexibility
  The open design (A7VKO) connects the housing to the suction chamber and requires no case drain line, simplifying reservoir plumbing. The closed design (A7VKG) separates the filling channel from the pump housing, permitting filling pressures up to 30 bar for highly-viscous media and allowing controlled case drain discharge.

▶ What payment methods do you support?
We accept T/T, L/C, Western Union, and Alibaba Trade Assurance. For repeat orders, open-account terms can be discussed based on credit history.

▶ Can you ship A7VK pumps internationally?
Yes. We ship by sea, air, rail, or express courier depending on urgency and destination. Sea freight is recommended for cost-sensitive bulk shipments.

▶ What is the warranty period?
The standard warranty is 12 months from the date of delivery, covering manufacturing defects under normal operating conditions and proper maintenance.

▶ How do I choose between open design (A7VKO) and closed design (A7VKG)?
Choose open design when the medium viscosity is moderate and you want simplified plumbing without a case drain line. Choose closed design for highly-viscous polyurethane components or when you need to maintain a controlled filling pressure above 1 bar on the low-pressure side.

▶ What filtration is required for the A7VK?
We recommend an absolute filter grade of ηabs ≤ 125 µm, arranged so that only filtered fluid enters the pump. Finer filtration extends service life, particularly in polyurethane systems where contamination can accelerate seal wear.