YK43X gas pressure reducing valve-Fornitore globale

YK43X gas pressure reducing valve belongs to the pilot piston pressure reducing valve. It consists of a main valve and a pilot valve. The main valve is mainly composed of valve seat, main valve disc, piston, cylinder liner, spring and other parts. The pilot valve is mainly composed of valve seat, valve disc, diaphragm, spring, regulating spring and other parts. By adjusting the spring pressure and setting the outlet pressure, the diaphragm is used to sense the change in outlet pressure. The opening and closing of the pilot valve drives the piston to adjust the size of the overcurrent area at the throttle position of the main valve, achieving the function of pressure reduction and stabilization.
YK43X gas pressure reducing valve is mainly used in gas pipelines, such as air, nitrogen, oxygen, hydrogen, liquefied gas, natural gas and other gases.

Main technical parameters

Nominal pressure (MPa)	1.6	2.5
Shell test pressure (MPa)	2.4	3.75
Sealing test pressure (MPa)	1.6	2.5
Maximum import pressure (MPa)	1.6	2.5
Export pressure range (MPa)	0.1-1.0	0.1-1.6
Pressure characteristic deviation (MPa)	GB12246-1989
Flow characteristic deviation (MPa)	GB12246-1989
Minimum pressure difference (MPa)	0.15	0.15
Leakage rate	X/F (polytetrafluoroethylene): 0 Y (hard seal) GB12245-1989

Material for main parts

Part name	Part Material
Valve body, valve cover, bottom cover	WCB/304
Valve seat, valve disc	2Cr13/304
LINER	304/25 (hard chrome plating)
piston	2Cr13/copper alloy
piston ring	alloy cast iron
Guide valve seat, guide valve stem	2Cr13/304
diaphragm	1Cr18Ni9Ti
Main valve and guide valve spring	50CrVA
Adjusting spring	60Si2Mn
Sealing gasket (X/F model)	Rubber/Polytetrafluoroethylene
Guide valve body, guide valve cover	25/304

Flow coefficient Cv

DN	15	20	25	32	40	50	65	80	100	125	150
Cv	1	2.5	4	6.5	9	16	25	36	64	100	140

Main overall dimensions

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Nominal Diameter	External dimensions			Connection size
DN	L	H	H1	1.6MPa			2.5MPa			4.0MPa			6.4MPa
DN	L	H	H1	D	D1	Z-d	D	D1	Z-d	D	D1	Z-d	D	D1	Z-d
15	140	285	85	95	65	4-12	95	65	4-14	95	65	4-14	105	75	4-14
20	160	285	85	105	75	4-12	105	75	4-14	105	75	4-14	125	90	4-18
25	180	290	100	115	85	4-12	115	85	4-14	115	85	4-14	135	100	4-18
32	200	290	105	140	100	4-18	135	100	4-18	135	100	4-18	150	110	4-23
40	220	310	110	150	110	4-18	145	110	4-18	145	110	4-18	165	125	4-23
50	250	310	110	165	125	4-18	160	125	4-18	160	125	4-18	175	135	4-23
65	280	310	115	185	145	4-18	180	145	8-18	180	145	8-18	200	160	8-23
80	310	340	155	200	160	8-18	195	160	8-18	195	160	8-18	210	170	8-23
100	350	340	155	220	180	8-18	235	190	8-23	230	190	8-23	250	200	8-25
125	400	375	190	250	210	8-18	270	220	8-25	270	220	8-25	295	240	8-30
150	450	375	200	285	240	8-23	300	250	8-25	300	250	8-25	340	280	8-34
200	550	475	225	340	295	12-23	360	310	12-25	375	320	12-30	405	345	12-34
250	650	535	290	405	355	12-25	425	370	12-30	445	385	12-34	470	400	12-41
300	800	595	320	460	410	12-25	485	430	16-30	510	450	16-34	530	460	16-41
350	900	650	355	520	460	16-25	550	490	16-34	570	510	16-34	595	525	16-41
400	1000	700	395	580	525	16-30	610	550	16-34	655	585	16-41	670	585	16-48