## Industrial Water Ring Vacuum Pumps Water ring vacuum pumps (NVV series pumps) are specialized equipment for creating vacuum when working with wet, contaminated, or aggressive gas media. Their simple design, isothermal operating principle, and high reliability make them an ideal choice for the chemical, pharmaceutical, food, and other industries. As a manufacturer of vacuum furnaces, we use the presented pumps for designing our own equipment. ### Operating Principle and Key Advantages of Water Ring Pumps The pump uses water as the working fluid, which creates a sealed ring inside the housing, providing a number of operational advantages over oil-sealed pumps: - **Operation with wet media:** Safe evacuation of vapor-gas mixtures and liquids. - **Isothermal mode:** Low heating of the pumped gas, which is important for volatile or sensitive substances. - **Ease of maintenance:** No rubbing metal surfaces inside the working chamber, minimal number of complex parts. - **Safety:** Ability to work with explosive and harmful gases (in appropriate design versions). - **Environmental friendliness:** Water is used as the working fluid, not oil. ### Main Applications of NVV Series Pumps They are especially in demand in the chemical and pharmaceutical industries for solvent recovery, distillation, vacuum drying, and evacuation of hazardous gases. They are also used in the food industry for deaeration and vacuum packaging, in metalworking for vacuum impregnation and degassing of melts, and in the pulp and paper industry for vacuum filtration. **The reliability of the NVV series is ensured by a well-thought-out design and durable materials:**

Component	Material	Note
Housing (pump section)	Cast iron SCh20	High strength and vibration resistance
Impeller	Stainless steel 08Kh16N11M3	Corrosion resistance to most media
Valves (suction/discharge)	Fluoroplastic (PTFE)	Chemical resistance, tightness
Shaft mechanical seal	Set: Silicon carbide (SiC) / Carbon / Fluoroelastomer (Viton) / Stainless steel 08Kh18N10T	Eliminates leaks, long service life

### Selection, Integration, and Technical Support As manufacturers of vacuum equipment, we offer a comprehensive solution for technological tasks: - **Professional model selection** based on your process parameters (capacity, ultimate pressure, medium). - **Integration into an existing system:** assistance with design and connection. - **Technical support and service** throughout the entire operational life. - **Equipping [vacuum drying ovens](https://tula-term.ru/oborudovanie/vakuumnye-sushilnye-shkafy-dlya-nizkogo-vakuuma "vacuum drying ovens")** with ready-made, parameter-matched pump stations based on NVV. If this type of pump is not suitable for your specific tasks (for example, high vacuum is required or work with chemically aggressive vapors without dilution), we will offer an alternative: [chemically resistant vacuum traps](https://tula-term.ru/oborudovanie/vakuumnaya-ohlazhdayushaya-lovushka "chemically resistant vacuum traps") or [two-stage systems](https://tula-term.ru/oborudovanie/vakuumnoe-oborudovanie "two-stage systems"). [Request a cost estimate for a drying oven with a pump](https://tula-term.ru/o-kompanii/kontakty "Request a cost estimate for a drying oven with a pump"). ## Get Professional Advice Contact us in any convenient way — our engineers will help you select the optimal model, calculate performance, and prepare a commercial proposal. [Request a quote](https://tula-term.ru/o-kompanii/kontakty "Request a quote") or [call us](tel:+74872701961 "call us").

General-purpose industrial pumps