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Electric low temperature control valve product description
ZRLP/M-DW electric low temperature control valve is a high-precision Electric Actuator and ultra-low temperature control valve body. The actuator contains a feeding function, accepts a standard signal of 4-20mAor1-5V.DC, converts the current signal into a corresponding straight line displacement, automatically controls the opening of the regulating valve, and reaches the pressure of the fluid in the pipeline. Flow, temperature, level and other process parameters are continuously adjusted. Electric low temperature control valve is suitable for working under 0~-250°C. It is composed of electric actuator and valve body with long neck pipe. The role of long neck pipe is to make the stem seal close to normal temperature and reduce the outside world. Thermal energy is introduced. To reduce transmission, long-necked thin-walled structures are used.
| Nominal diameter(DN) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| Valve seat diameter(dn) | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | |
| Rated flow coefficient(KV) |
single seat | 6.9 | 11 | 17.6 | 27.5 | 44 | 69 | 110 | 176 | 275 | 440 | 630 | 875 | 1250 |
| sleeve | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 155 | 250 | 370 | 580 | 900 | 1300 | |
| Allowable pressure difference(MPa) |
single seat | 3.8 | 3.2 | 3.0 | 2.0 | 1.8 | 1.5 | 1.4 | 1.0 | 0.7 | 0.6 | 0.5 | 0.3 | 0.1 |
| sleeve | 6.4 | 6.4 | 5.2 | 5.2 | 4.6 | 4.6 | 3.7 | 3.7 | 3.5 | 3.1 | 3.1 | 2.6 | 2.2 | |
| Nominal pressure(MPa) | 1.6、2.5、4.0、6.4 | |||||||||||||
| Rated route(mm) | 16 | 25 | 40 | 60 | 100 | |||||||||
| Valve cover type | Low temperature type-10～-196℃、Super Low temperature type-196～-250℃ | |||||||||||||
| Capping type | Bolt compression type | |||||||||||||
| Seal packing | V type PTFE packing、V type flexible graphite filler | |||||||||||||
| Valve core type | Single seat, sleeve type | |||||||||||||
| Flow characteristics | percentage、straight line type | |||||||||||||
| Configure Actuator series | 3810series、PSL series etc. Electric Actuator(Customers can also specify brands) | |||||||||||||
| Actuator parameters | voltage：220V、input signal：4-20mAor1-5V·DC、output signal：4-20mA·DC | |||||||||||||
| Protection level：Equivalent toIP65、Separate explosion levels： ExdⅡBT4(ExdⅡBT6Special custom)、Hand operation function：handle |
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| environment temperature：-25～+70℃、environment humidity：≤95% | ||||||||||||||
| item | standard | ||
| tolerance% | with3810L±2.5； withPSL±1.0 | ||
| difference% | with381L ±2.0； withPSL±1.0 | ||
| dead zone% | 1.0 | ||
| tolerance between start point and end point% |
Electric open | start point±2.5 | end point±2.5 |
| start point±2.5 | end point±2.5 | ||
| Electric close | start point | ±2.5 | |
| end point | ±2.5 | ||
| Rated route tolerance % | ≤2.5 | ||
| Leakage L/h | 0.01%×Valve rated capacity | ||
| Adjustable range R | 30：1 | ||
