Ball valve selection
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Two ball valves with DN50 and PN2.5 are required for the equipment renovation; what model of ball valves should be used? Could all friends please provide the specific model?
Hello, could you leave your contact information?
Are you a floating ball or a fixed ball? What medium is it traveling on?
I would like to ask whether the PN2.5 mentioned by the original poster refers to PN2.5 or 2.5 MPa; the pressure seems too low. First, consider the way in which it connects to the pipes at both ends; secondly, the choice of ball valve depends on the operating conditions and the medium being transported. Could you please provide the temperature, pressure, and the type of medium involved in these operating conditions?
It’s not yet determined whether it will be fixed or floating; the medium consists of catalyst particles with a median particle size of over 1.0 mm
It is PN2.5, 0.25 MPa; the temperature is at room temperature, and the pressure is not high – only a few kilograms. The medium consists of catalyst particles, with a median particle size of over 1.0 mm
This post was last edited by Zhou Liuliuxu on 2019-6-25 07:46. Using a hard-sealed fixed ball valve should be fine, but the valve seat should be designed as a dust-proof one during the design phase. Here are some model numbers for the owner’s reference only: Q47Y-PN2.5-DN50 (manual)/Q347Y-PN2.5-DN50 (turbo)/Q647Y-PN2.5-DN50 (pneumatic)/Q947Y-PN2.5-DN50 (electric). When placing the order, it should be specified that the valve seat needs to be dust-proof. It’s not clear whether PN2.5 valves are available for purchase; the standard pressures found on the market are usually PN16/25/40, so PN2.5 represents a pressure that is too low. It is recommended that the original poster avoid purchasing from small factories; many of these are nothing more than small workshops with poor technical support. They simply imitate others, and their imitation is far from accurate. Some of them don’t even have designers. The so-called dust prevention measures offered by such workshops are nothing but gimmicks – they fail to prevent dust at all
The valve in question doesn’t operate under high temperatures or pressures; the main concern is the presence of particulates, so its hardness needs to be taken into account, and the valve must be wear-resistant.
Okay, it’s explained in great detail; I’ll take another look.