J641W J641W-16 J641W-25 J641W-40 Pneumatic globe valve

J641W J641W-16 J641W-25 J641W-40 Pneumatic globe valve

Overview of J641W J641W-16 J641W-25 J641W-40 Pneumatic globe valve

J641W J641W-16 J641W-25 J641W-40 Pneumatic globe valve refers to the valve whose closing part (disc) moves along the center line of the valve seat. According to this movement form of the disc, the change of the valve seat opening is in direct proportion to the disc stroke. Because the opening or closing stroke of the valve stem of this kind of valve is relatively short, and has a very reliable cut-off function, and because the change of the valve seat opening is directly proportional to the stroke of the valve disc, it is very suitable for the regulation of flow. Therefore, this type of valve is very suitable for cut-off or regulation and throttling.

Main tech of J641W J641W-16 J641W-25 J641W-40 Pneumatic globe valve

Structure: Globe type, on-off

Size: DN15~DN300

Rating: PN16~PN160

Body: WCB, CF8, CF8M

Trim: 304SS, 316SS, 316L

Actuator: Pneumatic cylinder

Accessries: Solenoid valve, limited switch, air filter

Selection principle of J641W J641W-16 J641W-25 J641W-40 Pneumatic globe valve

1. Stop valves should be selected for pipelines or devices with high temperature and high pressure media. Such as thermal power plant, nuclear power plant, high temperature and high pressure pipeline of petrochemical system.

2. On the pipeline where the convection resistance requirements are not strict. That is, where little consideration is given to pressure loss.

3. Small valves can be needle valve, instrument valve, sampling valve, pressure gauge valve, etc.

4. There is flow regulation or pressure regulation, but the regulation accuracy is not high, and the pipeline diameter is relatively small. For example, on the pipeline with nominal diameter ≤ 50mm, it should be selected.

5. High pressure angle stop valve or high pressure angle throttle valve with nominal pressure of pn160, nominal pressure of 16MPa or pn320, nominal pressure of 32Mpa should be selected for small and large chemical fertilizers in synthetic industrial production.

6. In the desilication workshop and coking pipeline in alumina Bayer process production, it is easy to select the DC stop valve or DC throttle valve with separate valve body, removable valve seat and cemented carbide sealing pair.

Note: Any special design or question of J641W J641W-16 J641W-25 J641W-40 Pneumatic globe valve, kindly contact the manufacturer for more details.