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Tag Archives: gate valve
Valve Selection – Standard Park Valve Network
Pieces of cut-off valve is closed (valve) along the central line of moving the valve seat. Move according to the situation of this valve, the valve seat through the mouth of the change in distance is inversely proportional valve. Because of such closed or closed the valve stem is definitely a short distance, and cut with a very reliable effect, and because changes in the valve seat and valve through the valve port is inversely proportional to the distance relationship is very appropriate in the regulation of traffic. Thus, this type of valve is suitable varieties for the intercept or conditioning, and collaboration throttle use.
Valve selection criterion is:
1, low temperature, high pressure pipeline or installation media should be selected on the cut-off valve. Fire power plants, nuclear power plants, petrochemical system, low temperature, high pressure pipeline.swing type check valve
2, the request pipeline convection resistance lax pipeline. That is not appropriate for the pressure loss of the premises.
3, the choice of a small needle valve, instrument valve, sampling valve, pressure gauge valve.
4, there is pressure flow conditioning or conditioning, but a request for adjustment accuracy is not high, and the pipe diameter and match small, such as by ≤ 50mm nominal pipe on the road, should be selected.
5, the decomposition of industrial production in the small and large fertilizer fertilizer should use the nominal pressure PN160 PN320 PN nominal pressure 16MPa or 32MPa high-pressure angle-type valve or pressure-type throttle valve angle.
6, alumina produced in the Bayer desilication plant, easy to coke pipeline, easy to use to leave the body type, can place the seat, carbide Sealing DC or DC-type throttle valve.
7, the construction of rural water supply, heating engineering, nominal pipe through the small, the choice of cut-off, balancing valve or piston valve, as nominal by less than 150mm pipeline.cast iron gate valve
The most obvious strengths are: closed and closed in the process, because the valve body sealing surface on the conflict between power than the gate is small, so wear. Seat height of an ordinary closed channel diameter of only 1 / 4, and thus much smaller than the gate. Usually as long as the valve body and a sealing surface, so the production process of the match, and easy maintenance. Nominal pressure or pressure level: PN1.0-16.0MPa, ANSI CLASS 150-900, JIS10-20K nominal diameter or caliber: DN10 ~ 500, NPS 1 / 2 ~ 36 "convergence method: flange, welded, threaded, etc. Practical Temperature: -196 ℃ ~ 700 ℃-driven approach:, pneumatic, electric, hydraulic, Pneumatic, valve body materials: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8 (304), CF3 (304L), CF8M (316), CF3M (316L), Ti. use of different materials, separable utility in water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media.