K300X Slowly- Closed Check Valve

• Media: Water
• Temperature: Ordinary Temperature
• Material: Cast Iron
• Connection Form: Flange
• Structure: Elevated
• Pressure: Ordinary Pressure
• Model NO.: K300X
• Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
• Sealing Form: Gland Packings Globe Valve
• Flow Direction: Unidirection
• Standard: GB
• Application: Industrial Usage, Water Industrial Usage
• Service: OEM/ODM
• Shelf Life: 18 Months
• Transport Package: Poly Bag, Inner Box, Outer Carton /and Pallet
• Specification: DN20-800
• Trademark: Daisen
• Origin: China
• HS Code: 8481804090
• Production Capacity: 80000t/Year

Product Description

DN(mm)		20	25	32	40	50	65	80	100	125	150	200	250	300	350	400	450	500	600	700	800
L		180	180	180	203	203	235	285	360	400	455	585	650	800	860	915	980	1075	1230	1300	1450
PN10	D	105	115	135	145	160	180	195	215	245	280	335	390	440	500	565	615	670	780	895	1010
	D1	75	85	100	110	125	145	160	180	210	240	295	350	400	460	515	565	620	725	840	950
PN16	D	105	115	135	145	160	180	195	215	245	280	335	405	460	520	580	640	705	840	910	1020
	D1	75	85	100	110	125	145	160	180	210	240	295	355	410	470	525	585	650	770	840	950
PN25	D	105	110	135	145	160	180	195	230	270	300	360	425	485	550	610	660	730	840	955	1070
	D1	75	85	100	110	125	145	160	190	220	250	310	370	430	490	550	600	660	770	875	990
H		172	172	172	265	265	310	350	460	520	570	695	780	905	1025	1080	1030	1135	1270	1460	1640
H1		106	106	106	210	210	215	245	305	365	415	510	560	658	696	735	610	665	725	865	925

Stucture and purpose
Used on the pump outlet of a water supply system to prevent medium's back -flow,water hammer and water shock.combining three functions as anelectric valve ,check valve and W ater hammer remover, capable of effectively raisingsafety and reliability of the water supply system,integr ating thetechnical principle of slow-open, speed valve, slow- close removing water hammer and preventing both pump- starting and pump- stopping waterhammers fr om being formed.the gate can automatically carry out open-close upon the operation rules of the water pump just by operating the pumpto open or close electrically.this valve features a big flow and a small pressure loss,r eliable sealing performance, easy installation,debugging andmaintenance and a long duration.
Application standard

Quality assurance	Structure length:Q/BYL-2002	Test standard:GB/T13927 Ap1598
Design standard:Q/YYF-2000	Flange standard:GB/T172416 GB/T9113

 

Material of main parts

 

Type	Diaphragm type		Piton type
	Part	Materials	Part	Materials
1	Bonnet	Casting pig,Ductalloy, carbon steel,ss	Bonnet	Casting pig,Ductalloy,carbon steel,ss
2	Spring	Spring steel	Cylinder sleeve	ss
3	Prseeboard of diaphragm	Casting pig,Ductalloy, carbon steel,ss	Piston	Ductalloy
4	Diaphragm		Seal ring	NBR,ternary etnylenepropylene rubber
5	Stem	2Cr13,2Cr13,ss	Stem	2Cr13,2Cr13,ss
6	Disc	Casting pig,Ductalloy,carbon steel,copper,ss	Spring	Spring steel,ss
7	OO-Ring	NBR,ternary ethylenepropylene rubber	Disc	Casting pig,Ductally,carbon steel,ss
8	OPressboard of O-Ring		Sealing pad	NBR,ternary ethylenepropylene rubber
9	Seat ring		Seal ring	Cu-alloy,ss
10	Body		Seal pressboard	Casting pig,Ductalloy,carbon steel,ss
11			Body	Cast iron