WA42Y bellows balanced safety valve

The valve is suitable for working temperature ≤200ºC there is unstable back pressure or toxic, corrosive media equipment or pipeline, as overpressure protection device. Connecting flange standard ≤4MPa JB/T6...... 94 series 1. >4MPa with JB/T... 94 Series 2 standard. This safety valve generally needs to be mounted horizontally.
About It
Materials for main parts

NO.	Part name	WA42Y-C type material	WA42Y-P type material	WA42Y-R type material
1	Valve body	WCB	ZG1Cr18Ni8Ti,304	CF8M
2	Valve seat	2Cr13	1Cr18Ni8Ti	316
3	Adjusting ring	2Cr13	1Cr18Ni8Ti	0Cr18Ni12Mo2Ti
4	Valve flap	2Cr13	1Cr18Ni8Ti	316
5	Backflush tray	2Cr13	1Cr18Ni8Ti	316
6	Bellows	304	304	316
7	Guide sleeve	2Cr13	1Cr18Ni8Ti	0Cr18Ni12Mo2Ti
8	Bonnet	ZG230-450	ZG230-450	ZG230-450
9	Spring	50CrVA	50CrVA coated with fluoroplastic	50CrVA is coated with fluoroplastic
	Sealing surface material

Overall dimensions and connection dimensions

Model number	Nominal diameter	do	D	K	g	g1	b	f	f1	Z-? d	DN'	D1	K1	g3	g2	b1	f'	f1'	Z1-? d1	L	L1	≈H
WA42Y-16 WA42Y-16P WA42Y-16R	25	16	115	85		65	16	2		4-14	32	140	100		78	18	2		4 to 18	110	95	378
32	20	140	100		78	18	2		4 to 18	40	150	110		85	18	3		4 to 18	115	100	378
40	25	150	110		85	18	3		4 to 18	50	165	125		100	18	3		4 to 18	120	110	406
50	32	165	125		100	20	3		4 to 18	65	185	145		120	20	3		4 to 18	135	120	450
65	40	185	145		120	20	3		4 to 18	80	200	160		135	20	3		8 to 18	160	140	520
80	50	200	160		135	20	3		8 to 18	100	220	180		155	22	3		8 to 18	170	135	525
100	65	220	180		155	22	3		8 to 18	125	250	210		185	22	3		8 to 18	195	175	690
125	80	250	210		185	22	3		8 to 18	150	285	240		210	24	3		8-23	210	190	857
150	100	285	240		210	24	3		8-23	175	310	270		240	26	3		8-23	255	230	838
200	125	340	295		265	26	3		12-23	250	405	355		320	30	3		12-26	300	260	992

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