H14W Stainless Steel Internal Thread Check Valve

• Media: Water-Vapour Oil
• Temperature: Low Temperature
• Material: Stainless Steel Carbon Steel Brass
• Connection Form: Flange Welding
• Structure: Swing
• Pressure: High Pressure, Medium Pressure and Low Pressure
• Model NO.: H14W
• Function: Ddcv Double Lobe, Nrvr Silence, Sfcv Rubber Lobe, Nrvz Silence, Nrvg Silence
• Sealing Form: Hard Seal and Soft Seal
• Flow Direction: Unidirection
• Standard: DIN GB ANSI Bsw JIS
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: XC
• Origin: China
• HS Code: 8481804090
• Production Capacity: 9999

Product Description

The function of the stainless steel screw swing check valve is to prevent the backflow of media in the pipeline. The check valve belongs to the automatic valve class, and the opening and closing parts are automatically opened or closed by the force of the flowing medium. The check valve is only used in the pipeline with one-way flow of the medium to prevent the backflow of the medium and prevent accidents. The applicable medium is: water, oil, steam, acid medium, etc.

Stainless steel internal thread swing check valve standard:

Design and Manufacture	Structural length	Pressure - temperature rating	Connecting flanges	Test and inspection
GB12236	GB12221	GB9131 JB/T74 HG20604	JB/T74-94 GB9113 HG20592-20635	JB/T9092-1999 GB13927

Stainless steel internal thread swing check valve pressure test:

Weighing pressure PN(MPa)	Test pressure (MPa)		Applicable temperature (° C)				Applicable medium
	Strength test	Seal test	WCB	Cr5Mo	1Cr18Ni12Mo2Ti	1Cr18Ni9Ti
1.6	2.4	1.8	425 or less	550 or less	220 or less	200 or less	Water, oil products, steam, acidic media
2.5	3.8	2.8
4.0	6.0	4.4
6.4	9.6	7.1
10.0	15.0	11.0			-
16.0	24.0	17.6
25.0	37.5	27.5

Stainless steel internal thread swing check valve main parts materials and properties:

Part name	Material number
Valve body	WCB	ZGCr5Mo	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
Valve cover	WCB	ZGCr5Mo	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
Valve disc	WCB	ZGCr5Mo	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
Shaker bar	WCB	ZGCr5Mo	ZG1Cr18Ni9Ti	ZG1Cr18Ni12Mo2Ti
Valve seat	25	1Cr18Ni9Ti	1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
Pin shaft	1Cr17Ni2		1Cr18Ni9Ti	1Cr18Ni12Mo2Ti
Seal ring, gasket	Cladding pad		1Cr18Ni9Ti	1Cr18Ni12Mo2Ti

Main technical dimensions of stainless steel internal screw swing check valve:

Nominal pressure PN(MPa)	Nominal diameter DN(mm)	Main overall dimensions and connection dimensions (mm)								Weight (kg)
		L	D	D1	D2	b-f	z-d	D3	H
1.6	25	160	115	85	65	16-2	4 -- 14	140	130	14
	32	180	135	100	78	16-2	4-18	150	140	16
	40	200	145	110	85	16-2	4-18	160	150	18
	50	230	160	125	100	16-2	4-18	185	160	22
	65	290	180	145	120	18-3	4-18	215	177	26
	80	310	195	160	135	20-3	8 to 18	235	187	33
	100	3540	215	180	155	20-3	8 to 18	255	202	39
	125	400	245	210	185	22-3	8 to 18	285	227	57
	150	480	280	240	210	24-3	8-23	330	263	80
	200	550	335	295	265	26-3	12-23	385	293	95
	250	650	405	355	320	30-3	12-25	455	330	175
	300	750	460	410	375	30-4	12-25	515	382	260
	350	850	520	470	435	34 - three	16 to 25	545	430	360
	400	950	580	525	485	36-4	16 and 30	600	480	496
	500	1150	705	650	608	44-4	20-34	730	560	588