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真空負(fù)壓安全閥（TFA72W）

Description:

TFA72W-10P/10R
TFA72W適用于溫度≤200℃的負(fù)壓系統(tǒng)，當(dāng)容器內(nèi)負(fù)壓超過(guò)允許值時(shí)，該閥自動(dòng)開(kāi)啟，吸入空氣；當(dāng)容器內(nèi)負(fù)壓達(dá)到允許值時(shí)，該閥自動(dòng)關(guān)閉，從而保護(hù)設(shè)備及系統(tǒng)。安裝在正常非負(fù)壓系統(tǒng)，當(dāng)容器和系統(tǒng)的放散閥未打開(kāi)，產(chǎn)生負(fù)壓時(shí)，此閥自動(dòng)開(kāi)啟。
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.
主要性能規(guī)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

主要零部件材料 Explanation of materials for main parts
Nominal diameter DN（mm）	Dimensions
Nominal diameter DN（mm）	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
250	395	350	320	12-23	28	3	440