Safety Overflow Valve

Model
AY42H/HA802Y

Safety overflow valve applications

AY42H,HA802Y type safety overflow valves are to be pipelines in high-pressure pump stations to provide over pres-sure protection.

Safety overflow valve brief figure of structure

Safety overflow valve chief property and specificationTop of page

Type	Nominal pressure (Mpa)	Opening Pressure	Working Temperature	Suitable Medium
AY42H-160 HA802Y-160	16.0	6.3~16.0	200	Water, Oil goods etc
AY42H-250 HA802Y-250	25.0	10.0~25.0
HY42H-400 HA802Y-400 HA802Y-600	40.0-60.0	20.0~60.0

Safety overflow valve materials for main partsTop of page

No.	Name of part	Materials
1	Body	Carbon Steel
2	Seat	Stainless steel
3	Disc	Stainless steel
4	Bonnet	Welding
5	Spring	50CrVA

Safety overflow valve dimensions (mm)Top of page

Type	Nominal diameter DN(mm)	Dimension
		RC	ZG	L	L1	≈H
HA802Y-600	15	1/2”	1/2”	52	90	250
	25	1”	1”	52	113	275
	40	1 1/2”	1 1/2”	52	157	336

Type	Nominal diameter	Dimension
		D	D1	K	M	Z-￠d	b	L	L1	RC	≈H
AY42H-160 AY42H-250 AY42H-400	15	135	95	25	M48×2	4-22	25	65	140	1″	329
	20	165	115	30	M52×2	6-26	28	80	150	1 1/2″	447
	25	200	145	38	M80×3	6-29	40	90	180	2″	485
	32	225	170	42	M100×3	6-33	50	100	200	2 1/2″	570

Safety overflow valve ralated productsTop of page

• Spring Loaded Low Lift Type Safety Valve
• Closed Spring Loaded Low Lift Type-High Pressure Safety Valve
• Closed Spring Loaded Full Bore Type-High Pressure Safety Valve
• Corrugated-Duct Full-Open Type Safety Valve
• Spring Full-Open Type Safety Valve Sixth A Radiator
• Air Compressor Safety Valve
• Safety Overflow Valve
• Vacuum Negative-Pressure Safety Valve
• High Temperature And High-Pressure Safety Valve
• Special Full-Lift Safety Valve For Gas
• Safety Back-Flow Valve
• Twin spring type safety valve
• Inner Assemble Safety Valve
• Impulse Safety Valve
• Single-Lever Safety Valve
• Dual-Lever Safety Valve
• Middle Temperature And Pressure Impulse Safety Device
• Pilot Operated Safety Valve
• Micro-Open Type Safety Valve
• Spring Micro-Open Type Safety Valve
• A41C Type Pound-Grade Low Lift Spring Loaded Safety Valve
• WA41C blanced bellows spring loaded safety valve
• A42C Type Pound-Grade Low Lift Spring Loaded Safety Valve
• WA42C blanced bellows spring loaded safety valve
• A44C Type Pound-Grade Full Lift Spring Loaded Safety Valve
• WA44C blanced bellows spring loaded safety valve
• A48C Type Pound-Grade Full Lift Spring Loaded Safety Valve
• A48SC Type Pound-Grade Full Lift Spring Loaded Safety Valve
• TA、A Type Special Safety Valve Series For Oil Refining
• J Series Safety Valve With Jacket
• M、R、F Series Safety Valve Screwed/Flanged
• A46C Type Pilot-Operated Pressure Relief Valve

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