pneumatic thin fat through engine valve dual oriented structure, equipped with multi spring actuator. Has the advantages of compact structure, surface light, sensitive action, low loss, pressure drop description allows a large pressure difference, valve capacity, flow characteristics of Trichosanthes really, convenient maintenance and so on, can use dry harsh working conditions. Especially suitable for the valve pressure difference, workplace requirements without leakage. This series of products are the standard type, adjust the cut-off valve, bellows seal type, jacket type insulation and other varieties. Nominal grade products are PN10, 16, 40, 64; body diameter range of DN20~300. Application of fluid temperature from -196 ℃ ~+560 ℃ range of different grades. Leakage star standard with IV or VI. Flow characteristics such as linear or percentage. A variety of different specifications can be selected.
Materials of main parts
| Name | Texture of material |
| The valve body valve cover | ZG230-450,ZG0Cr18Ni9 |
| Valve seat | 0Cr18Ni9, 0Cr18Ni9+PTFE, 0Cr18Ni9+ division Chatterley |
| Filler | PTFE, flexible graphite |
| Corrugated | 0Cr18Ni9 |
| Shim | Graphite spiral wound gasket (V6590), F4 |
| Film cover | A3,0Cr18Ni9 |
| Corrugated diaphragm | Clip reinforced nylon fabric nitrile rubber |
| Spring | 60Si2Mn |
| Valve push rod | 0Cr18Ni9,2cr13 |
The main technical parameters of the valve seat
| DN | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | ||||||||||||||||||
| Seat diameter mm | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | ||||||||||||||||||
| Ratedkv | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 | 630 | 1000 | 1600 | 1960 | 2560 | ||||||||||||||||||
| Nominal pressure(MPa) | 1.6,2.5,4.0,6.4 | |||||||||||||||||||||||||||||||
| Trip(mm) | 16 | 25 | 40 | 60 | 100 | 130 | ||||||||||||||||||||||||||
| The effective area of the filmAe(cm2) | 280 | 350 | 560 | 900 | 1400 | Piston type | ||||||||||||||||||||||||||
| Signal range KPa | 20-100,40-200,80-240 | |||||||||||||||||||||||||||||||
| Gas pressure steam sourceMPa | 0.1-0.4 | 0.4-0.7 | ||||||||||||||||||||||||||||||
| The inherent flow characteristics | Linear, equal percentage, quick opening | |||||||||||||||||||||||||||||||
| The inherent adjustable ratio | 50:1 | |||||||||||||||||||||||||||||||
| The leakage class | Hard seal, soft seal IV V; VI | |||||||||||||||||||||||||||||||
| Flange size | According to JB/79. (2) _94, HG20592_97, GB, ANSI, JIB, DIN and other standards | |||||||||||||||||||||||||||||||
| Body material | WCB, 304, 316, WC6, nickel, titanium, Hastelloy, Monel etc. | |||||||||||||||||||||||||||||||
| Valve material | 304, 316, 420, nickel, titanium, Hastelloy, Monel etc. | |||||||||||||||||||||||||||||||
| Working temperature ℃ | -40~+230 ℃ (room temperature), +230~+450 ℃, +450~+560 ℃ (Zhong Wen) (high temperature), -40~-196 ℃ (low temperature) | |||||||||||||||||||||||||||||||
| Series type | at room temperature, medium temperature, low temperature type. Bellows seal type, jacket type heat, regulating off type | |||||||||||||||||||||||||||||||
