A37, A43 Switch Valve

Size Range: 2" ~ 6"
Pressure Rating: PN16 ~ PN40
Temperature Range: ≤350℃
Connection Type: Flanged
Material: Carbon Steel / Stainless Steel
Operation: Manual Duplex Changeover
Suitable Medium: Gas, Steam, Liquid, etc.

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zgkk@zgkkv.com

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Our products now cover a wide range of standardized fluid control products that can be adapted to a variety of drive modes, comprising ball valves, butterfly valves, gate valves, globe valves, check valves, safety valves, rotary ball valves, plunger valves etc. Our products are widely used in water conservancy, municipal, electric power, gas, petrochemical, coal chemical, energy, environmental protection, medicine, real estate, metallurgy, mining and many other fields.

A37、A43 Series Models
A37H-16C/25/40	A43H-16C/25/40
Description of Main Parts and Components For A43H and A37H types, the main component materials are identical to those of A47H and A48Y spring-loaded safety valves. The only exception is the three-way body, which is manufactured from WCB carbon steel, while all other components remain unchanged to ensure system compatibility and operational reliability.

A43Y Type (DN)	Relevant A47Y Type (DN)	A37Y Type (DN)	Relevant A47Y Type (DN)
50	32×2	50	32×2
80	50×2	80	65×2
100	80×2	100	80×2
125	100×2	125	100×2
150	125×2	150	125×2

Dimensions (mm)
Type	DN	do	D	K	g	g₁	b	f	f₁	Z-φd	DN’	D₁	k₁	g₂	b₁	f’	Z₁-φd₁	L	L₁	L₀	h	-
A37H-16C A43H-16C	50	25	165	125	100		20	3		4-18	32	140	100	78	18	2	4-18	115	110	165	235	547
	80	40	200	160	135		20	3		8-18	50	165	125	100	16	3	4-18	135	120	190	285	795
	80	50	200	160	135		20	3		8-18	65	185	145	120	18	3	4-18	140	130	205	310	835
	100	65	220	180	155		22	3		8-18	80	200	160	135	20	3	8-18	160	135	255	355	890
	125	80	250	210	185		22	3		8-18	100	220	180	155	22	3	8-18	170	160	260	410	1170
	150	100	285	240	210		24	3		8-23	125	250	210	185	22	3	8-18	190	190	275	430	1240
A37H-25 A43H-25	50	25	165	125	100		20	3		4-18	32	140	100	78	18	2	4-18	115	110	165	235	547
	80	40	200	160	135		22	3		8-18	50	165	125	100	16	3	4-18	135	120	190	285	795
	80	50	200	160	135		22	3		8-18	65	185	145	120	18	3	4-18	140	130	205	310	835
	100	65	230	190	160		24	3		8-23	80	200	160	135	20	3	8-18	160	135	255	355	890
	125	80	270	220	188		28	3		8-26	100	220	180	155	22	3	8-18	170	160	260	410	1170
	150	100	300	250	218		30	3		8-26	125	250	210	185	22	3	8-18	190	190	275	430	1240
A37H-40 A43H-40	50	25	165	125	100	88	20	3	4	4-18	32	140	100	78	16	2	4-18	115	110	165	235	547
	80	40	200	160	135	121	22	3	4	8-18	50	165	125	100	16	3	4-18	135	120	190	285	795
	80	50	200	160	135	121	22	3	4	8-18	65	185	145	120	18	3	4-18	140	130	205	310	835
	100	65	235	190	160	150	24	3	4.5	8-23	80	200	160	135	20	3	8-18	160	135	255	355	890
	125	80	270	220	188	176	28	3	4.5	8-26	100	220	180	155	22	3	8-18	170	160	260	410	1170
	150	100	300	250	218	204	30	3	4.5	8-26	125	250	210	185	22	3	8-18	190

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Address: No. 4900 Binhai 3rd Road, Longwan District, Wenzhou City, Zhejiang Province
Production Base: No.11 Xu'an Industrial Zone, Qingtian County, Lishui City
Phone: +86-577-86569666/85986466
Fax: +86-577-85888877
Email: hu.boyu@zgkkv.com
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