High Performance Vacuum Negative- Pressure Safety Valve - Safety overflow valve – Convista

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High Performance Vacuum Negative- Pressure Safety Valve - Safety overflow valve – Convista Detail:

Specifications

AY42H-160, AY42H-250, AY42H-400, AY42H-600

TA802Y-160, TA802Y-250, TA802Y-400, TA802Y-600

AY42H、TA802Y type safety overflow valves are to be applied to pipelines in high-pressure pump stations to provide over pressure protection.

Type	Nominal pressurePN(MPa)	Opening pressure(MPa)	Working temperature(℃)	Suitable medium
AY42H-160TA802Y-160	16	6.3~16.0	200	Water, Oil etc.
AY42H-250TA802Y-250	25.0	10.0~25.0
AY42H-400TA802Y-400 TA802Y-600	40.0-60.0	20.0~60.0

safety overflow valve

Material for main parts

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

Dimension

Type	Nominal diameter DN(mm)	Dimensions(mm)
Type	Nominal diameter DN(mm)	Rc	ZG	L	L₁	≈H
TA802Y-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 diameterDN(mm)	Dimensions(mm)
Type	Nominal diameterDN(mm)	D	D₁	K	M	Z-Φd	b	L	L₁	RC	≈H
AY42H-160AY42H-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

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