200X Water Pressure Reducing Valve

• Media: Steam Oil Water
• Certification: CCC, RoHS, ISO, CE
• Temperature: High Temperature
• Connection: Flange
• Valve Seat: Single-Seat
• Structure: Lever
• Model NO.: 200X
• Material: Stainless Steel Carbon Steel Brass
• Transport Package: Wooden Box
• Specification: DN15-DN800
• Trademark: XC
• Origin: China
• HS Code: 8481804090
• Production Capacity: 9999

Product Description

Equipment composition

Water control valve is water pressure control valve, hydraulic control valve is composed of a main valve and its attached catheter, pilot valve, needle valve, ball valve and pressure gauge. According to the purpose of use, function and different places can be evolved into remote control float valve, pressure reducing valve, slow closing check valve, flow control valve, pressure relief valve, hydraulic electric control valve, water pump control valve and so on.

Installation requirements

200X pressure reducing valve should be installed before the filter, and should facilitate the requirements of blowdown.
Water control valve is a use of water self-moistening type valve body, no need to add oil lubrication, if the main valve parts damaged, please disassemble according to the following instructions. (Note: The general consumption of damaged products in the inner valve is the diaphragm and...
But in the application of hydraulic control valve in the project, there are still some misunderstandings, such as the applicable conditions of the valve, the valve design selection requirements, installation points, etc. Therefore, this paper intends to CECS standard "hydraulic control valve application design regulations" as the basis, combined with my experience to describe the above aspects of the problem.

Selection of key points

(1) The hydraulic control valve used in engineering is a product that has passed the manufacturer's inspection, has complete various marks and meets the requirements of technical data.
(2) According to the functional requirements, select the type of valve, and then according to the pipeline transmission medium, temperature, building standards and owner requirements, determine the valve body and sealing parts of the material. Commonly used valve body materials are cast iron, copper iron, copper, plastic and so on. The commonly used sealing surface and lining materials are copper alloy, plastic, steel, cemented carbide, rubber and so on. The valve body material should match the pipe material.
(3) The nominal pressure of the valve has different levels such as 0.6, 1.0, 1.6, 2.5 and 4.0MPa, and the working pressure of the pipeline transport medium should be less than the nominal pressure value of the valve.
(4) The hydraulic control valve setting in the project should have enough space for management, operation, installation and maintenance, and should meet the requirements of the pipeline for the valve.
(5) When the pipeline is connected by flanges, the hydraulic control valve connected by flanges should be used; When the pipeline is connected in a groove, the hydraulic control valve connected in a groove should be used.
(6) The hydraulic control valve should be set on the pipeline with one-way flow of the medium.
(7) The arrow direction on the main body of the water control valve must be consistent with the flow direction of the pipeline system.
(8) The pipe section of the hydraulic control valve should not be blocked and blocked. In the highest position of the pipe network and other gas storage section should be set up automatic exhaust valve.
(9) When the valve is installed horizontally, the valve cover and stem should face upward. When installed vertically, the valve cover and stem should face outward.
(10) Strength and tightness test should be done before valve installation.
(11) The strength and tightness test of the valve should comply with the following provisions.
A, the strength test pressure of the valve is 1.5 times the nominal pressure;
B, the tightness test pressure of the valve is 1.5 times the nominal pressure;
C, the test pressure in the test duration should remain unchanged, and the shell packing and valve disc sealing surface no leakage;
D, valve test duration according to the table above.

Structural characteristics and uses

The 200X pressure regulator consists of a hydraulic control nozzle system consisting of a main valve, pilot valve, needle valve, ball valve, micro filter and pressure gauge. When in use, when the outlet pressure is adjusted, it can automatically maintain a stable outlet pressure.
This product uses the pilot valve self-control, does not need other devices and energy, easy maintenance, high accuracy of pressure control, little influence by the import pressure and flow, reliable pressure reduction and pressure regulation.
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.

Working principle

When the valve is fed water from the inlet end, the water flows through the needle valve into the main valve control room, and the outlet pressure acts on the pilot valve through the catheter. The pilot valve closes when the outlet pressure is higher than the set value of the pilot valve spring. The control room stops drainage, at this time the pressure in the main valve control room rises and closes the main valve, and the outlet pressure no longer rises.
When the valve outlet pressure drops to the set pressure of the pilot valve spring, the pilot valve opens and the control room drains downstream. Since the displacement of the pilot valve system is greater than the inlet water of the needle valve, the pressure in the control room of the main valve drops. The inlet pressure causes the main valve to open. In the stable state, the water inlet and drainage of the control room are the same, the opening of the main valve is unchanged, and the outlet pressure is stable.
Adjusting the pilot valve spring can set the outlet pressure.

Main parameters

 

Nominal pressure (Mpa)	Shell test pressure (MPa)	Seal test pressure (MPa)	Maximum inlet pressure (MPa)	Adjustable outlet pressure (MPa)	Applicable media	Medium temperature (° C)
1.0	1.5	1.1	1.0	0.09-0.8	water	0-80.
1.6	2.4	1.76	1.6	0.10-1.2
2.5	3.75	2.75	2.5	0.15-1.6

Main materials

 

Part name	Parts material
Body bonnet	CF8,CF8M,WCB,HT250,QT450
Seat disc	F304,F316,, copper alloy
Seal ring O-ring	PTFE, nitrile butadiene rubber
Ball valve	Stainless steel, copper alloy
Float ball valve	Stainless steel, copper alloy
Micro filter	Stainless steel

List of parts:
1, pilot valve 2, main valve 3, ball valve 4, pressure gauge 5, needle table

Connection size

 

DN	L	A	A1	H	H1	F	D mm	D1 mm	D2 mm	N - Φ d
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 to 18
40	240	330	155	395	278	170	150	150	150	110	110	110	88	88	84	4-17.5	4-17.5	4 to 18
50	240	330	155	395	278	170	165	165	165	125	125	125	102	102	99	4-17.5	4-17.5	4 to 18
65	250	350	165	405	298	180	185	185	185	145	145	145	122	122	118	4-17.5	4-17.5	8 to 18
80	285	365	175	430	313	210	200	200	200	160	160	160	133	133	132	8-17.5	8-17.5	8 to 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 and 22	12-26
250	650	623	300	730	470	500	395	405	425	350	355	370	320	320	330	12 and 22	12-26	12-30
300	800	seven hundred	340	760	490	580	445	460	485	400	410	430	370	370	389	12 and 22	12-26	16 and 30
350	860	840	415	840	526	640	505	520	555	460	470	490	430	430	448	16-22	16 and 26	16-33
400	960	880	430	910	570	715	565	580	620	515	525	550	482	482	503	16 and 26	16 and 30	16-36
450	1075	930	460	1030	610	780	615	640	670	565	585	600	532	550	548	20 to 26	20-30	20-36
500	1075	980	490	1135	665	830	670	715	760	620	650	660	585	585	609	20 to 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 to 39
seven hundred	1650	1130	560	1460	865	980	895	910	960	840	840	875	800	800	820	24 to 30	24-36	24-42
800	1750	1230	610	1640	975	1050	1015	1025	1085	950	950	990	905	905	928	24 to 33	24-39	24-48