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彈簧微啟式外螺紋安全閥（A21H）

Description:

系列 Series
A21F-16C A21H-16C A21H-40 A21H-64 A21Y-100 A21H-160 A21W-16P A21W-40P A21F-40P A21W-64P A21W-100P A21W-160P KA21Y-16C KA21Y-16P A21Y-16R A21Y-40R A21Y-64R A21Y-100R A21Y-160R
A21F、A21H-C型適用于工作溫度≤200℃的空氣、氨、石油氣……等介質的設備或管路上。A21W-P、R型適用于溫度≤200℃有腐蝕性的氣體或液體的設備或管路上，作為超壓保護裝置。KA21Y型適用于溫度≤100℃的液化石油氣等。
A21F, A21H-C type are used for the equipment and pipeline of the air, ammonia, petroleum gas, etc. medium what the wor-king temperature are less than 200 . A21W-P, R type are used for the equipment and pipeline of the quality with corr ode gas and liquid medium shat the wor-king temperature are less than 200 . Take for extrapressure protection devices. KA21Y type are used for liquefied petroleum gas what the working temperature are less than 100
主要零部件材料 Explanation of materials for main parts
NO.	Name of part	A21H-C/A21F KA21Y-C Materials	A21W-P/A21F-P KA21Y-P Materials	A21Y-R Materials
1	Union	20	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
2	Union nut	35	2Cr13	1Cr18Ni9Ti
3	Nozzle	35	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
4	Body	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
5	Disc	2Cr13/2Cr13+PTFE	1Cr18Ni9Ti/1Cr18nI9Ti+PTFE	1Cr18Ni12Mo2Ti
6	Spring washer	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
7	Spring	50CrVA	50CrVA Coated Teflon	50CrVA Coated Teflon
8	Locking nut	Q235-A	2Cr13	1Cr18Ni9Ti
9	Spring guide	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
10	Adjusting nut	Q235-A	2Cr13	1Cr18Ni12Mo2Ti
	Sealing surface of material	"Y" Co Depositing slite, "H" D507 Depositing D507, "W" body

外形尺寸和連接尺寸 Dimensions （mm）
Type	（DN） Nominal diameter	do	d	Do	M	d1	D1	L	L1	H
KA21Y-16C A21H-16C A21H-40 A21W-16P A21W-40P KA21Y-16P	15	12	15	20	M27 1.5	G1/2"	30	35	76	66
	20	16	20	25	M33 1.5	G3/4"	34	40	87	68
	25	18	25	31	M39 1.5	G1"	40	50	100	105
A21Y-64 A21Y-64P A21Y-100 A21Y-100P	15	10	15	25	M39 1.5	G1"	44	50	100	66
	20	10	20	31	M39 1.5	G1"	44	50	100	68
	25	12	25	31	M39 1.5	G1"	44	50	100	105
A21W-160 /160P	15	8	20	/	M24 2	G1"	44	50	100	261
	20	8	25	/	M33 2	G1"	44	50	100	261
	25	8	28	/	M36 2	G1"	44	50	100	285