Description:
| TFA72W-10P/10R | TFA72W适用于温度≤200℃的负压系统，当容器内负压超过允许值时，该阀自动开启，吸入空气；
当容器内负压达到允许值时，该阀自动关闭，从而保护设备及系统。安装在正常非负压系统，当容器和系统的放散阀未打开，产生负压时，此阀自动开启。 | | tive pressure system with temperature 200 . When the netative pressure in the container exceeds the allowable value, the valve will open automatically and absorbs air When the netative pressure in the container reaches the allowable value, the valve will close automatically so as to protect the equipment and the system. It is to be installed in normal non-negative pressure systems. When the discharge valve of the container and system has not opened, which produces the negative pressure, this valve will open TFA72W is applicable in nega-automatically. | | 主要性能规范 | | NO. | Name of part | TFA72W-P Materials | TFA72W-R Materials | | 1 | Body | ZG1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti | | 2 | Seat | 1Cr18Ni9Ti | ZG1Cr18Ni12Mo2Ti | | 3 | Adjusting ring | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | | 4 | Bonnet | ZG1Cr18Ni9Ti | 1Cr18Ni9Ti | | 5 | Stem | 1Cr18Ni9Ti | 1Cr18Ni12Mo2Ti | | 6 | Spring | 50CrVA | 50CrVA Coated Teflon | | Working temperature | 200 | | Suitable medium | TFA72W-10P Nitric acid etc. medium | | TFA72W-10R Acetic acid etc. medium | | 主要零部件材料 Explanation of materials for main parts | Nominal diameter
DN（mm） | Dimensions | | D | D1 | D2 | Z- d | b | f1 | H | | 15 | 95 | 65 | 45 | 4-14 | 14 | 2 | 110 | | 20 | 105 | 75 | 55 | 4-14 | 16 | 2 | 130 | | 25 | 115 | 85 | 65 | 4-14 | 16 | 2 | 150 | | 32 | 140 | 100 | 78 | 4-18 | 18 | 2 | 180 | | 40 | 150 | 110 | 85 | 4-18 | 18 | 3 | 200 | | 50 | 165 | 125 | 100 | 4-18 | 20 | 3 | 221 | | 80 | 200 | 160 | 135 | 4-18 | 22 | 3 | 245 | | 100 | 220 | 180 | 155 | 8-18 | 22 | 3 | 253 | | 125 | 250 | 210 | 185 | 8-18 | 24 | 3 | 280 | | 150 | 285 | 240 | 210 | 8-23 | 24 | 3 | 329 | | 200 | 340 | 295 | 265 | 8-23 | 26 | 3 | 377 | |
