FJZJS Series Roots-Atmospheric Water Ring Vacuum Unit

The FJZJS series corrosion-resistant Roots-atmospheric-ejector-water-ring vacuum unit consists of a water-ring pump, a Roots pump (as the main pump), and an atmospheric ejector. These units feature a high ultimate vacuum level and corrosion-resistant wetted parts. They are widely used in processes such as vacuum evaporation, filtration, drying, concentration, distillation, and vacuum crystallization across industries including food, petroleum, chemicals, pharmaceuticals, metallurgy, and electron

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Description

Selection Guide

Water-ring vacuum pump models are typically designated in the format "II FSK - 8," where the parameters signify the following:

II — Second-generation water-ring pump

F — Corrosion-resistant

SK — Water-ring vacuum pump

8 — Maximum pumping capacity (m³/min)

Performance Specifications Table

Product Model	Pumping speed (L/s)	Pump Model										Inlet/Outlet Diameter (mm)
Product Model	Pumping speed (L/s)	Ultimate pressure (≤Pa)	Main pump	Power (kW)	Rotational speed (r/min)	Intermediate pump	Power(kw)	Rotational speed (r/min)	Fore-vacuum pump	Power(kw)	Power(r/min)	Inlet/Outlet Diameter (mm)
FJZJS70-4P	70	40	ZJC70	2.2	2900				IIFSK-4	7.5	1450	65/65
FJZJS150-4P	150	40	ZJC150	3	2900				IIFSK-4	7.5	1450	65/65
FJZJS150-6P	150	40	ZJC150	3	2900				IIFSK-6	11	1450	80/80
FJZJS150-8P	150	40	ZJC150	3	2900				IIFSK-8	15	1450	80/80
FJZJS300-6P	300	40	ZJP300	4	2900				IIFSK-6	11	1450	100/80
FJZJS300-8P	300	40	ZJP300	4	2900				IIFSK-8	15	1450	100/80
FJZJS150-70-4P	150	2	ZJC150	3	2900	ZJC70	2.2	1450	IIFSK-4	7.5	1450	65/65
FJZJS300-150-6P	300	2	ZJP300	4	2900	ZJC150	3	2900	IIFSK-6	11	1450	100/80
FJZJS300-150-8P	300	2	ZJP300	4	2900	ZJC150	3	2900	IIFSK-8	15	1450	100/80

Note: ① The performance figures in the table are based on a gas temperature of 20°C, an atmospheric pressure of 1013.25 hPa (equivalent to 760 mmHg), a relative gas humidity of 70%, and a circulating water supply temperature of 15°C.
② Pumping speed tolerance: ±10%. (1 mmHg = 1 Torr = 133.3 Pa; 0.1 MPa = 750 mmHg)

Model Designation

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