Electric chromium molybdenum steel globe valve

J941Y-100I chromium molybdenum steel electric stop valve with electric actuator is mainly used in chemical equipment, general components, industrial equipment, pharmaceutical equipment, general equipment, petrochemical equipment, power equipment, metallurgical powder equipment, mining equipment, municipal, electronic industry, etc. Suitable media: water, steam, oil, nitric acid, acetic acid, alkali, salt water, seawater, oxygen, etc. Suitable for pipelines with various corrosive media, high-temperature resistant steam and oil pipelines, with good corrosion resistance and sufficient strength.

Chromium-molybdenum steel globe valve refers to a valve where the closing element (disc) moves along the centerline of the valve seat. According to the movement of the valve disc, the change in the valve seat opening is directly proportional to the valve disc stroke. Due to the relatively short opening or closing stroke of the valve stem and the highly reliable cut-off function, as well as the proportional relationship between the change of the valve seat opening and the stroke of the valve disc, this type of valve is very suitable for regulating flow. Therefore, this type of valve is very suitable for use as a shut-off or regulating and throttling device.

The use of electric globe valves is extremely common, but due to the large opening and closing torque and long structural length, the nominal diameter is usually limited to below 250mm, and there are also sizes up to 400mm. However, special attention should be paid to the inlet and outlet directions when selecting them. Generally, the medium of shut-off valves below 15mm mostly flows into the lower part of the valve disc, while the medium of shut-off valves above 200mm mostly flows into the upper part of the valve disc. This is due to the closing torque of the valve. In order to reduce the opening or closing torque, globe valves with a diameter of 200mm or more are generally equipped with internal or external bypass valves.

Advantages of electric chromium molybdenum steel globe valve:

l. During the opening and closing process, the friction between the valve disc and the valve body sealing surface is smaller than that of the gate valve, resulting in wear resistance.

2. The opening height is generally only 1/4 of the diameter of the valve seat channel, so it is much smaller than the gate valve.

3. Usually, there is only one sealing surface on the valve body and disc, so the manufacturing process is relatively good and easy to maintain.

Test pressure

Nominal pressure PN (MPa) 1.6 2.5 4.0 6.4 10.0 16.0

Shell strength test 2.4 3.8 6.0 9.6 15 24

Upper sealing test 1.8 2.8 4.4 7.0 11 18

Sealing test 1.8 2.8 4.4 7.0 11 18

Scope of use Product type Applicable medium Applicable temperature (℃)

J941Y-I type water, steam, oil ≤ 550 ℃

Main component materials, product types, and part names

Valve body, valve cover, valve stem, valve disc sealing surface, valve stem nut, packing fastener

Chromium molybdenum steel Chromium molybdenum steel Alloy steel Cobalt based hard alloy steel Aluminum bronze Flexible filler Alloy steel

J941W/H/Y-16 Electric globe valve size table and selection of electric actuators

Valve Main Size (mm) Electric Device Selection and Main Parameters Motor Power (KW)

DN L D D1 Zxd Hs H model torque (N · m) speed (r · min)

40 200 145 110 4x18 330 330 DZW05 50 12 0.12

50 230 160 125 4x18 350 349 DZW10 100 24/36 0.25/0.37

65 290 180 145 8x18 400 406 DZW10 100 24/36 0.25/0.37

80 310 195 160 8x18 355 427 DZW20 200 18/24/36 0.37/0.55/0.75

100 350 215 180 8x18 415 480 DZW20 200 18/24/36 0.37/0.55/0.75

125 400 245 210 8x18 460 585 DZW30 300 18/24/36 0.55/0.75/1.1

150 480 280 240 8x23 510 635 DZW45 450 24/36 1.1/1.5

200 600 335 295 12x23 710 750 DZW60 600 24/36 1.5/2.2

250 622 405 355 12x25 786 750 DZW90 900 24/36 2.2/3