... features: 1. Internal structural simple and advanced, open pump chamber and impeller, high precision, meet the cleanliness requirement ... of GMP. 2. Adopting international standard lathedog connection. Pump case and cover connected by a lathedog, not only ... has advantages of self-lubricating, high tightness, anti-abrasion, corrosion-resistant, anti-high temperature, no leaks and easy disassembly 5. ...