Spring Loaded Low Lift External Thread Cryogenic Safety Relief Valve (GADA21F)

• Customization: Available
• Pressure: Pn16
• Structure: Lever Type
• Model NO.: GADA21F
• Material: Wcb
• Category: Safety Valve
• Size: Dn40/50
• Connecting Type: Flanged Inlet& Outlet
• Medium: Steam, Air
• Medium Temperature: Below 350 Deg C
• Usage: Overpressure Protection Device
• Application: Power Plant Steam Boiler Steam Pipeline
• Transport Package: Plywood Case
• Specification: CE, SGS, TUV
• Trademark: GOOLE, OEM
• Origin: Wenzhou, Zhejiang, China
• HS Code: 8481400000
• Production Capacity: 10000PCS/Year

Product Description

Spring Loaded Low Lift External Thread Cryogenic Safety Relief Valve (GADA21F)

Product Description

Low lift safety valve introduction:
1.In low lift valves, the disc only lifts a distance of 1/24th of the bore diameter. The discharge area is determined entirely by the position of the disc, and since the disc only lifts a small amount, the capacities tend to be much lower than those of full or high lift valves.
2. Low lift safety valve opening height is between one twentieth to one fortieth times of the flow diameter. 
GAA21F,GAA21H-C type are used for the equipment and pipeline of the air, ammonia, petroleum gas, etc. medium what the working temperature are less than 200ºC.
GAA21W-P,R type are used for the equipment and pipeline of the quality with corrode gas and liquid medium what the working temperature are less than 200ºC .Take for extra pressure protection devices.
KGAA21Y type are used for liquefied petroleum gas what the working temperature are less than 100ºC.

Product Details

Spring Loaded Low Lift Safety Valve Main Parts Material

NO.	Parts Name	A21H-C/A21F Material	A21W-P/A21F-P Material	A21Y-R Material
1	Nipple	20	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
2	Nipple Nut	35	2Cr13	1Cr18Ni9Ti
3	Seat	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	50CrVA
8	Locking Nut	Q235-A	ZG230-450	1Cr18Ni9Ti
9	Guide	2Cr13	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
10	Adjusting Bolt	Q235-A	2Cr13	1Cr18Ni12Mo2Ti
	Sealing	"Y"---Stellite, "H"------D507,  "W"------Body material

 
Spring Loaded Low Lift Safety Valve Main Dimension.

Model	DN	do	d	Do	M	d1	D1	L	L1	≈H
KA21-16C A21H-16C A21H-40 A21W-16P A21W-40P KA21-16P	15	12	15	20	M27×1.5	G1/2"	30	35	76	66
	20	16	20	25	M33×1.5	G3/4"	35	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

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