Eye wash water pressure and temperature standard

August 3, 2018
Lab Accessories – PP sink
August 17, 2018

Eye wash water pressure and temperature standard

American eyewash standard specifies water source pressure for eyewash

Eye wash water pressure

The water source pressure of the eye wash device is an important condition for ensuring the water flow and effect of the eye wash portion and the spray portion of the eye wash device. If the water source pressure is too small, the water supply of the eye wash device is insufficient, and the water source pressure is too large to damage the user, then the eye wash device in the United States How is the standard specified?

In the US eyewash standard, the eyewash water flow is specified: >1.5L/MIN, eye wash/p>washing water flow:>11.4L/MIN, the eye wash water must be low enough to ensure no harm to the user; spray water flow: >75.7L/MIN, the spray water diameter should not be less than 508mm at 1524mm from the ground.

The technical description of the eyewash device mentioned above does not mention the water supply pressure of the eyewash device. However, under the premise of ensuring the water flow rate of the eye wash device, the water pressure of the eye wash device is regulated, that is to say, under the water source pressure of 0.2 MPa, The eyewash flow, the spray water flow, and the colleague’s use of eye wash and spray water flow, as well as the relevant effects, must be met.

In fact, in many cases, the eye wash device satisfies the water source pressure. However, under special circumstances, when the water source pressure is lower than 0.2Mpa, there will be insufficient eye wash and spray water flow, and it is necessary to change this state. Increase the water supply pressure of the eye washer, but this method is to increase the cost.

In the research of eyewash low water pressure technology, the company has solved the problem of using eyewash with low water pressure in eyewash. The minimum water pressure is 0.02Mpa, which is technical priority.

Eye wash water temperature

When we take a shower, we all have a personal “comfort zone” with water temperature. If the water is too hot or too cold, we are likely to shorten the shower or bath time.

The same concept applies to eye and face cleaning devices where the water temperature plays an important role in ensuring that someone will soak for long enough to remove all harmful chemicals from the affected area. Due to the potential risks to workers – and the owners’ responsibility to protect them – it is important that all new and existing systems have tepid water flow to promote complete flushing.

ANSI Z358.1 requires warm water to be sent to the emergency unit, which encourages the injured person to complete a 15 minute flush in an emergency. ANSI recommends an inlet water temperature between 60 and 100 degrees Fahrenheit.

Despite this requirement, it is often overlooked to maintain warm water, most likely due to time and cost. Some people think that cold water is sufficient for eyewash or shower fixtures, but the rinse fluid needs to be delivered at a comfortable temperature that is not harmful to the user. If the water temperature is below 60 degrees Fahrenheit, prolonged exposure can affect the body’s ability to maintain body temperature, thereby increasing the risk of hypothermia. Most commonly, cold water will only cause the user to leave the shower or rinse before the 15-minute guide, which may result in personal injury. Conversely, if the liquid delivered to the affected user exceeds 100 degrees Fahrenheit, the chemical reaction may accelerate, or if it is hot enough, it may cause skin burns.

The water supply to the equipment must also be sufficient to support 15 minutes of flushing fluid flow. For shower showers and eyewashes, a minimum water pressure of 30 psi (PSI) should be provided for the unit. It must also meet ANSI minimum flow, shower shower at least 20 gallons per minute (GPM), eye wash 0.4 GPM, eye and face wash 3.0 GPM. Actual traffic varies by product, so it is important to verify the flow with the equipment manufacturer.


Comments are closed.