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RV ZSF(H) Pneumatic Discharge Valve

Feature

Features

According to actual demand,bottom structure of RV ZSF(H) pneumatic discharge valve is designed to be flat bottom and valve body is V-shaped,and the valve disc with both lifting and lowering work modeds is provided.Inner cavity of valve body is provided with a scour-resistant and corrosion-resistant seal ring.The seal ring can protect valve body form medium scouring and corrosion when the valve is opened instantly.The seal ring is specially treated to make its surface hardness reach HRC5662,with hig abrasion resistance and corrosion resistance.Hard alloys are built up by welding on the sealing surface of valve disc.Seal pair appliers linear sealing to guarantee seal reliability and preven scaring,the valve is mainly used for bottom discharge.emptying,sampling and shut-off operation without dead zone in reaction kettles,storage tanks and other vessel.

Parameter

Dimensions Size

Form	DN(mm)	K1(mm)	D1(mm)	K(mm)	D(mm)	D2(mm)	H(mm)	Do(mm)
Upper Expansion（S）	25	100	135	85	115	40	415	115
	32	110	145	100	135	50	465	115
	40	125	160	110	145	50	465	115
	50	145	180	125	160	75	475	115
	65	160	195	145	180	80	510	115
	80	180	215	160	195	95	625	150
	100	240	280	180	215	115	770	150
	150	295	335	240	280	165	850	190
Under Expansion（X）	25	100	135	85	115	53	415	115
	32	110	145	100	135	60	465	115
	40	125	160	110	145	100	465	115
	50	145	180	125	160	80	475	115
	65	160	195	145	180	110	510	115
	80	190	225	160	195	135	625	150
	100	225	260	180	215	180	770	150
	150	295	335	240	280	215	850	190

Technical Parameters and Performance Indicators

DN(mm)	20	25	32	40	50	65	80	100	125	150	200	250	300
Diameter of Seat(mm)	20	25	32	40	50	65	80	100	125	150	200	250	300
Rated Flow Coefficient(Kv)	6	10	16	25	40	63	100	160	250	400	630
Travel(mm)	10	16		25		40			60
Allowable Differential Pressure（MPa)	6	4	2	1	1.0	2	1.6	1.0	0.6	0.4
Intrinsic Error（%）	±2.5
Hysteresis Error（%）	2.5
Dead Band（%）	1.0

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