Pneumatic Actuator/Good Quality/Industrial Valve/Class Certification/Full Bore/High Temperature/Class 600/10.0MPa/High Pressure Check Valve

• Customization: Available
• Media: Gas
• Temperature: Low Temperature
• Model NO.: bv-001
• Material: Cast Steel
• Structure: Swing
• Pressure: Low Pressure
• Function: Ddcv Double Lobe, Nrvr Silence
• Flow Direction: Unidirection
• Application: Industrial Usage, Water Industrial Usage, Household Usage
• Delivery Time: 15-25 Days
• Coating: Customized
• Design: BS 1868 / API 6D / ASME B16.34
• Size: DN15-DN1200
• End Connection: Threaded, Socket Weld
• Face to Face: ASME B16.10
• End Flange: ASME B16.5
• Test: API598
• Certificates: CE/ISO/SGS/Mtc
• Warranty Time: 24 Months
• OEM/ODM: Customized
• Manufacturer: Yoonad
• Trim: Ss AISI 410
• Socket Weld End: ANSI B 16.11
• Transport Package: Wooden Case
• Specification: customized
• Trademark: yoonad
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000PCS/Year

Product Description

High-pressure check valve structure and installation method:
1. The disc of the high-pressure check valve is disc-shaped and rotates around the rotating axis of the valve seat channel. Because the channel inside the valve is streamlined, the flow resistance is smaller than that of the lifting butterfly check valve. It is suitable for large-diameter occasions with low flow rate and infrequent flow changes, but it is not suitable for pulsating flow. Its sealing performance is not as good as the lifting type. Butterfly check valves are divided into single-flap type, double-flap type and most-flap type. These three forms are mainly divided according to the valve diameter. The purpose is to prevent the medium from stopping or backflowing and weakening the hydraulic impact.
2. The high-pressure check valve disc slides along the vertical center line of the valve body. The internal thread check valve can only be installed on the horizontal pipe. The disc on the high-pressure small-diameter check valve can be a ball. The valve body shape of the butterfly check valve is the same as that of the stop valve (it can be used with the stop valve), so its fluid resistance coefficient is larger. Its structure is similar to that of the stop valve, and the valve body and disc are the same as the stop valve. The upper part of the valve disc and the lower part of the valve cover are processed with guide sleeves. The valve disc guide sleeve can be freely raised and lowered in the valve guide sleeve. When the medium flows downstream, the valve disc is opened by the thrust of the medium. When the medium stops flowing, the valve disc falls on the valve seat by self-sagg, which prevents the medium from flowing back. The medium inlet and outlet channels of the straight-through butterfly check valve are perpendicular to the direction of the valve seat channel; the medium inlet and outlet channels of the vertical lifting check valve are the same as the direction of the valve seat channel, and its flow resistance is smaller than that of the straight-through type.
3. High-pressure check valve: a check valve in which the valve disc rotates around the pin shaft in the valve seat. The butterfly check valve has a simple structure and can only be installed on horizontal pipes, with good sealing performance.
4. High-pressure check valve: a valve in which the valve disc slides along the center line of the valve body. The pipeline check valve is a new type of valve with small size, light weight, and good processing technology. It is one of the development directions of the check valve. However, the fluid resistance coefficient is slightly larger than that of the swing check valve.
5. High-pressure check valve: This valve is used as a boiler feed water and steam cut-off valve. It has the combined functions of a lift check valve and a stop valve or angle valve.
In addition, there are some check valves that are not suitable for pump outlet installation, such as bottom valves, spring-type, Y-type check valves, etc.
B. High-pressure check valve use and performance specifications:
This valve is used as a device to prevent medium backflow on industrial pipelines.

• Prevents Backflow: The primary function of a check valve is to prevent the backflow of fluids in a piping system. It ensures that the flow of fluid occurs in one direction only, effectively blocking reverse flow. This is especially important in situations where backflow could cause damage, contamination, or interference with the intended flow direction.
• Protects Equipment and Systems: Check valves help safeguard equipment and systems by preventing potential damage caused by reverse flow. They act as a barrier, preventing fluids from flowing back and causing issues such as pump damage, pipe collapse, water hammer, or contamination of sensitive components.
• Maintains Pressure: Check valves assist in maintaining optimal pressure levels within a system. By allowing fluid to flow in the desired direction and preventing backflow, they help maintain the desired pressure conditions, ensuring efficient operation of pumps, regulators, and other pressure-sensitive equipment.
• Enhances System Efficiency: Check valves contribute to the overall efficiency of a system. By preventing reverse flow, they eliminate the need for additional pumps or mechanisms to counteract backflow, thereby reducing energy consumption and operational costs.
• Minimizes Water Hammer: Water hammer, characterized by sudden pressure surges or shockwaves in a system, can lead to pipe damage and system failure. Check valves help mitigate water hammer by preventing reverse flow and the subsequent pressure spikes that can occur.
• Allows for System Isolation and Maintenance: Check valves provide a means of isolating sections of a system for maintenance or repairs. By closing off the valve, the flow of fluids can be stopped in a specific direction, allowing for safe and efficient maintenance procedures.

During the use of this valve, the medium flows in the direction of the arrow shown in the figure.
1. When the medium flows in the specified direction, the valve disc is opened by the force of the medium; when the medium flows back, due to the deadweight of the valve disc and the reverse force of the medium, the valve disc and the sealing surface of the valve seat are tightly closed, so as to prevent the backflow of the medium.
2. The sealing surface of the valve body and valve disc is welded with stainless steel.
3. The structural length of this valve is in accordance with the provisions of GB12221-1989, and the flange connection size is in accordance with the provisions of JB/T79-1994.




In pipes and similar devices and equipment, check valves are generally used to prevent a reverse flow by allowing materials or fluids to flow in only one direction. Despite their various forms, sizes, and functions, these valves generally operate based on the same principle. 

The primary components of a check valve include the Body,Body Seats,Gasket,Cover Plate,Hinge,Nuts,Washer.

 

 

 

NPS	DN	API US Standard swing check valve size list
Type	in	mm	L	D	D1	D2	b	z-Фd	H	W(kg)
H44H-150Lb	2"	50	203	152	120.6	92	19	4-Ф19	161	17
H44W-150LbP	21/2"	65	216	178	139.7	105	22	4-Ф19	180	23
H44Y-150LbP	3"	80	241	190	152.4	127	24	4-Ф19	190	33
H44Y-150LbR	4"	100	292	229	190.5	157	24	8-Ф19	203	44
H44Y-150LbPL	5"	125	330	254	215.9	186	24	8-Ф22	229	62
H44Y-150LbRL	6"	150	356	279	241.3	216	25	8-Ф22	257	78
	8"	200	495	343	298.4	270	29	8-Ф22	292	137
	10"	250	622	406	362	324	30	12-Ф25	355	207
	12"	300	698	483	431.8	381	32	12-Ф25	396	279
	14"	350	787	533	476.2	413	35	12-Ф29	445	387
	16"	400	864	597	539.8	470	37	16-Ф29	490	446
	18"	450	978	635	577.8	533	40	16-Ф32	520	621
	20"	500	978	698	635	584	43	20-Ф32	546	770
	24"	600	1295	813	749.3	692	48	20-Ф35	880	970
H44H-300Lb	2"	50	267	165	127	92	22	8-Ф19	180	20
H44W-300LbP	21/2"	65	292	190	149.4	105	25	8-Ф22	190	24
H44Y-300LbP	3"	80	318	210	168.1	127	29	8-Ф22	212	40
H44Y-300LbR	4"	100	356	254	200.2	157	32	8-Ф22	246	51
H44Y-300LbPL	5"	125	400	279	235	186	35	12-Ф22		65
H44Y-300LbRL	6"	150	444	318	269.7	216	37	12-Ф25	292	90
	8"	200	533	381	330.2	270	41	16-Ф29	328	175
	10"	250	622	444	387.4	324	48	16-Ф32	379	210
	12"	300	711	521	450.6	381	51	20-Ф32	420	286
	14"	350	838	584	514.4	413	54	20-Ф35	530	400
	16"	400	864	648	571.5	470	57	20-Ф35	584	550
	18"	450	978	711	628.6	533	60	24-Ф35	610	700
	20"	500	1016	775	685.8	584	64	24-Ф41	860	860
	24"	600	1346	914	812.8	692	70	28-Ф44	203	1931
H44H-600Lb	2"	50	292	165	127	92	25	8-Ф19	203	34
H44W-600LbP	21/2"	65	330	190	150	105	29	8-Ф22	229	45
H44Y-600LbP	3"	80	356	210	168	127	32	8-Ф22	235	63
H44Y-600LbR	4"	100	432	273	216	157	38	8-Ф25	286	114
H44Y-600LbPL	5"	125	508	330	266	186	44	8-Ф29	292	160
H44Y-600LbRL	6"	150	559	356	292	216	48	12-Ф29	330	207
	8"	200	660	419	349	270	56	12-Ф32	381	387
	10"	250	787	508	432	324	64	16-Ф35	457	580
	12"	300	838	559	489	381	67	20-Ф35	584	778
	14"	350	889	603	527	413	70	20-Ф38	635	869
	16"	400	991	686	603	470	76	20-Ф41	684	1380