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Safety Valve Series

• Safety Relief Valve
• Pressure Relief Valve
• Balanced Safety Relief Valve
• Pilot Operated Safety Relief Valve
• Steam Safety Relief Valve

Product drawing»

Structural drawing»

Pilot Safety Valve

product drawing

Applications

A46F / Y pilot pressure relief safety valve is a safety valve of novel structure. It is mainly used for petroleum gas, chemical, electric power, metallurgy, city gas and other fields, is the best over-pressure protection device of compression equipments, container or pipes. Its main advantages are changing the spring direct effect to pilot valve indirect effect, enhancing the sensitivity of the movement, and the 46F / Y pilot pressure relief safety valve adopts sleeve piston type, double sealing seat structure, high precision movements, good repeatability, fast back seat, no leakage, can discharge with high back pressure, long working life, stable and reliable working, 46F / Y pilot pressure relief valve is also available to on-line adjusting, and after repeatable open and discharge, it can still back seat automatically, close strictly, easy to operate and maintain.

Dimensions & constructral diagram

The materials of main parts

No.	part name	Ax46Y/F AF46Y/F Materials	KAX46Y/F Materials
1	Body	WCB	WCB
2	Disc	2Cr13/2Cr13+PTFE	1Cr18Ni9Ti/1Cr18Ni9Ti+PTFE
3	Guide sleeve	1Cr18Ni9Ti	1Cr18Ni9Ti
4	Spring	50CrVA	50CrVA
5	O-ring	fluorubber	fluorubber
6	Bonnet	25	25
7	Pilot valve	Parts

External and connection dimensions（mm）

type	nominal diameter	do	L	L1	L2	H	DN’	D	D1	D2	D6	b	Z-Фd	D’	D1’	D2’	D6’	b’	Z-фd’
（K） AX46 F/Y- 16 AF46 Y-16	25	15	110	95	150	365	32	115	85	65		16	4-14	140	100	78		18	4-18
	32	20	115	100	150	375	40	140	100	78		18	4-18	150	110	85		18	4-18
	40	25	120	110	160	390	50	150	110	85		18	4-18	165	125	100		20	4-18
	50	32	135	120	160	410	65	165	125	100		20	4-18	185	145	120		20	4-18
	65	40	160	140	175	435	80	185	145	120		20	4-18	200	160	135		20	8-18
	80	50	170	135	175	451	100	200	160	135		20	8-18	220	180	155		22	8-18
	100	65	195	175	195	500	125	220	180	155		22	8-18	250	210	185		24	8-18
	125	80	210	190	220	526	150	250	210	185		22	8-18	285	240	210		24	8-23
	150	100	255	230	265	623	175	285	240	210		24	8-23	315	270	240		26	8-23
	200	125	300	260	300	690	250	340	295	265		26	12-23	405	355	320		30	12-26
（K） AX46 F/Y- 25 AF46 Y-25	25	15	110	95	150	365	32	115	85	65		16	4-14	140	100	78		18	4-18
	32	20	115	100	150	375	40	140	100	78		18	4-18	150	110	85		18	4-18
	40	25	120	110	160	390	50	150	110	85		18	4-18	165	125	100		20	4-18
	50	32	135	120	160	410	65	165	125	100		20	4-18	185	145	120		20	4-18
	65	40	160	140	175	435	80	185	145	120		22	8-18	200	160	135		20	8-18
	80	50	170	135	175	451	100	200	160	135		22	8-18	220	180	155		22	8-18
	100	65	195	175	195	500	125	230	190	160		24	8-23	2502	210	185		22	8-18
	125	80	210	190	220	526	150	270	220	188		28	8-26	85	240	210		24	8-23
	150	100	255	230	265	623	175	300	250	218		30	8-26	310	270	240		26	8-23
	200	125	300	260	300	690	250	360	310	278		34	12-26	405	355	320		30	12-26
(K) AX46 F/Y- 40 AF46 Y-40	25	15	110	95	150	365	32	115	85	65	58	16	4-14	140	100	78		18	4-18
	32	20	115	100	150	375	40	140	100	78	66	18	4-18	150	110	85		18	4-18
	40	25	120	110	160	390	50	150	110	85	76	18	4-18	165	125	100		20	4-18
	50	32	135	120	160	410	65	165	125	100	88	20	4-18	185	145	120		20	4-18
	65	40	160	140	175	435	80	185	145	120	110	22	8-18	200	160	135		20	8-18
	80	50	170	135	175	451	100	200	160	135	121	22	8-18	220	180	155		22	8-18
	100	65	195	175	195	500	125	235	190	160	150	24	8-23	250	210	185		22	8-18
	125	80	210	190	220	526	150	270	220	188	176	28	8-26	285	240	210		24	8-23
	150	100	255	230	265	623	175	300	250	218	204	30	8-26	310	270	240		26	8-23
	200	125	300	260	300	690	250	375	320	282	260	38	12-30	405	355	320		30	12-26
(K) AX46 F/Y- 64 AF46 Y-64	25	15	110	100	160	365	32	140	100	78	58	22	4-18	140	100	78	66	18	4-18
	32	20	130	110	160	375	40	155	110	82	66	24	4-23	150	110	85	76	18	4-18
	40	25	130	120	170	445	50	170	125	95	76	24	4-23	165	125	100	88	20	4-18
	50	32	135	130	195	460	65	180	135	105	88	26	4-23	185	145	120	110	22	8-18
	65	40	175	160	225	495	80	205	160	130	110	28	8-23	200	160	135	121	22	8-18
	80	50	175	160	225	525	100	215	170	140	121	30	8-23	235	190	160	150	24	8-23
	100	65	195	195	245	565	125	250	200	168	150	32	8-26	270	220	188	176	28	8-25
	150	100	280	265	265	610	200	345	280	240	204	38	8-34	375	320	282	260	38	12-30
	200	125	300	295	300	680	250	405	345	300	260	44	12-34	450	385	345	313	42	12-34
(K) AX46 F/Y-1 100 AF46 Y-100	25	15	110	100	160	365	32	140	100	78	58	24	4-18	140	100	78	66	18	4-18
	32	20	130	110	160	375	40	155	110	82	66	24	4-23	150	110	85	76	18	4-18
	40	25	130	120	170	445	50	170	125	95	76	26	4-23	165	125	100	88	20	4-18
	50	32	135	130	195	460	65	195	145	112	88	28	4-26	185	145	120	110	22	8-18
	65	40	175	160	225	495	80	220	170	138	110	32	8-26	200	160	135	121	22	8-18
	80	50	175	160	225	525	100	230	180	148	121	34	8-26	235	190	160	150	24	8-23
	100	65	195	195	245	565	125	265	210	172	150	38	8-30	270	220	188	176	28	8-25
	150	100	280	265	265	610	200	355	290	250	204	46	12-34	375	320	282	260	38	12-30
	200	125	300	295	300	680	250	430	360	312	260	54	12-41	450	385	345	313	42	12-34

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