Adjustable pressure relief valve - Check valves

BNSV Adjustable pressure relief valve

Overview

The adjustable pressure reducing valve is a kind of valve used in the parallel water supply system of fire water and domestic water to allocate the direction of water supply. In case of fire, a large amount of water is urgently needed for fire fighting, so domestic water should be cut off immediately to ensure sufficient fire fighting water; when the pressure of water used for fire fighting is reduced, the valve will open automatically and be in normal open state to restore domestic water supply. The valve makes it unnecessary for the system to set up a separate fire water supply network, which greatly saves the construction cost and water consumption. The valve has high control sensitivity, safety and reliability, simple debugging and long service life.

The adjustable pressure reducing valve consists of main valve, pilot valve, needle valve, ball valve, micro filter and pressure gauge. When in use, when the outlet pressure is set, the stable outlet pressure can be maintained automatically. This product uses the pilot valve self-control, does not need other devices and energy, simple maintenance, high accuracy of pressure control, less affected by the import pressure and flow, reliable pressure reduction and stabilization. This series of valve products are widely used in high-rise buildings, living areas and other water supply network systems and urban water supply projects.

Part name	Material
Body and bonnet	CF8,CF8M,WCB,HT250,QT450
Seat disc	F304,F316, copper alloy
Seal rign O ring	PTFE, NBR
Ball valve	S.S, copper alloy
Floating ball	S.S, copper alloy
Micro strainer	Stainless steel

DN	L	A	A1	H	H1	F	D mm			D1 mm			D2 mm			n-Φd
DN	mm	mm	mm	mm	mm	mm	PN1.0	PN1.6	PN2.5	PN1.0	PN1.6	PN2.5	PN1.0	PN1.6	PN2.5	PN1.0	PN1.6	PN2.5
20	180	292	136	342	247	116	105	105	105	75	75	75	58	58	56	4-13.5	4-13.5	4-14
25	180	292	136	342	247	116	115	115	115	85	85	85	68	68	65	4-13.5	4-13.5	4-14
32	180	292	136	342	247	116	140	140	140	100	100	100	78	78	76	4-17.5	4-17.5	4-18
40	240	330	155	395	278	170	150	150	150	110	110	110	88	88	84	4-17.5	4-17.5	4-18
50	240	330	155	395	278	170	165	165	165	125	125	125	102	102	99	4-17.5	4-17.5	4-18
65	250	350	165	405	298	180	185	185	185	145	145	145	122	122	118	4-17.5	4-17.5	8-18
80	285	365	175	430	313	210	200	200	200	160	160	160	133	133	132	8-17.5	8-17.5	8-18
100	360	410	195	510	350	275	220	220	235	180	180	190	158	158	156	8-17.5	8-17.5	8-22
125	400	455	220	560	365	310	250	250	270	210	210	220	184	184	184	8-17.5	8-17.5	8-26
150	455	475	230	585	420	355	285	285	300	240	240	250	212	212	211	8-22	8-22	8-26
200	585	530	255	675	450	460	340	340	360	295	295	310	268	268	274	8-22	12-22	12-26
250	650	623	300	730	470	500	395	405	425	350	355	370	320	320	330	12-22	12-26	12-30
300	800	700	340	760	490	580	445	460	485	400	410	430	370	370	389	12-22	12-26	16-30
350	860	840	415	840	526	640	505	520	555	460	470	490	430	430	448	16-22	16-26	16-33
400	960	880	430	910	570	715	565	580	620	515	525	550	482	482	503	16-26	16-30	16-36
450	1075	930	460	1030	610	780	615	640	670	565	585	600	532	550	548	20-26	20-30	20-36
500	1075	980	490	1135	665	830	670	715	760	620	650	660	585	585	609	20-26	20-33	20-36
600	1230	1060	530	1270	725	920	780	840	845	725	770	770	685	685	720	20-30	20-36	20-39
700	1650	1130	560	1460	865	980	895	910	960	840	840	875	800	800	820	24-30	24-36	24-42
800	1750	1230	610	1640	975	1050	1015	1025	1085	950	950	990	905	905	928	24-33	24-39	24-48

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BNSV Adjustable pressure relief valve

Overview