The water flow of the eyewash is clearly stipulated in any eyewash standard, such as the spray water flow of the compound eyewash: >75.7L/MIN, the eyewash/face wash water flow: >11.4L/MIN, the eyewash water flow: > 1.5L/MIN, and the water flow rate of the spray and the eyewash at the same time: >87.1L/MIN, which is the water consumption of a single eyewash.

According to the safety principle, the same device area must meet the needs of 2 eyewashes to use at the same time, then the water flow used by 2 eyewashes: >87.1 * 2 = 174.2L / MIN, that is to say, the minimum requirements for water supply of the pump are: >174.2L / MIN * 60 = 10.452m3 / h

If you calculate the water flow of the pump according to the above water flow, there will definitely be a problem, because the actual water flow of the eyewash is larger than this specified value, for example, under the dynamic water pressure of 0.2MPa, the spray water flow rate: 86L/MIN, the eyewash water flow: 12L/MIN, then the water flow of an eyewash: 86 + 12 = 98L / MIN, that is, 5.88m3 / h, the water flow used by 2 eyewashes at the same time: 5.88 * 2 = 11.76m3 / h

The above calculation is based on the test value under the condition of water supply pressure of 0.2MPa, then the water pressure is at 0.5MPa water supply pressure, this water flow is much larger, Sturge rwd has a lot of experimental data, you can call us