Chinese Standard Steel Swing Check Valve PN25

The valve bearing pressure uses the precision casting craft casting, the surface quality is artistic, not sticks surface defects and so on the sand, cold shot; The intrinsic quality is stable, not loose, trachoma, crack and so on intrinsic flaw。

●Swing check valve used the internal installation rocking shaft to swing structure，The valve all opens shuts all to install in the valve chest，Proofed body，Uses the sealing gasket or joint ring seal besides the valve blue spot，The whole outside leaking point, had not ceased the possibility which outside the valve releases。

●Swing check valve rocker lever and joint of Disc Used the spherical surface connection the structure，Enables Disc to have certain degree of freedom in 360℃ the scope, has the suitable micro position compensation。

●Stellite6 The valve seals the vice-packing surface built-up welding alloy steel (13Cr) or hard metal Stellite6，But namely the use in has in the fine grain medium also not to be able because of to erode wears very quickly。

●Uses in the high pressure (above 16Mpa or 900Class) the valve Body and Bonnet connection uses the pressure from the tight seal structure，The Wedgejoint ring and pendant colletcombination, pressure higher seal is more reliable。

cast steel Swing check valve

GB 1.6MPa
DN	50	65	80	100	125	150	200	250	300	350	400	500
L	230	290	310	350	400	480	550	650	750	850	950	1150
H	160	175	185	200	225	265	295	330	380	430	480	560
Wt	22	26	33	39	57	80	95	175	260	360	496	588
GB 2.5MPa
DN	50	65	80	100	125	150	200	250	300	350	400	500
L	230	290	310	350	400	480	550	650	750	850	950	1150
H	175	190	190	215	250	270	350	410	430	450	560	620
Wt	22	30	35	52	73	103	135	196	285	388	496	641
GB 4.0MPa
DN	50	65	80	100	125	150	200	250	300	350	400	500
L	230	290	310	350	400	480	550	650	750	850	950	1150
H	175	190	190	215	260	270	340	400	425	460	490	620
Wt	22	30	34	52	73	103	212	297	362	450	585	641
GB 6.4MPa
DN	50	65	80	100	125	150	200	250	300	350	400	500
L	300	340	380	430	500	550	650	775	900	1025	1150	1400
H	190	205	205	235	265	295	355	405	465	515	570	620
Wt	30	41	48	72	108	155	217	341	472	627	882	1027

●Flange Size：GB12236
●Flange Size：JB/T79　GB9113
●Pressure Temperature：---
●Construction length：GB12221
●Buttwelding Conncetion cimension：---
●inspection and Test：GB9131

Installs the size and the weight：

Design and manufacture standard：

●Design and manufacture：GB12236
●Flange Size：　JB/T79　GB9113
●Pressure Temperature ：---
●Construction length：GB12221
●Buttwelding Conncetion cimension ：---
●inspection and Test ：GB9131

Installs the size and the weight：

GB 10.0MPa
DN	50	65	80		100	125	150	200	250	300
L	300	340	380		430	500	550	650	775	900
H	210	230	255		295	330	365	420	505	585
Wt	32	42	60		110	170	220	390	473	737
GB 16.0MPa
DN	50	65		80		100	125	150	200
L	300	340		380		430	500	550	650
H	220	260		270		330	390	430	510
Wt	44	66		100		130	168	300	578