A swing check valve is an automatic valve that is designed to prevent the reversal of flow in a pipeline. Its main function is to ensure that the medium in the pipeline does not flow back. When the pressure in the pipeline drops to zero, the valve completely shuts to prevent any backflow. The operation of a swing check valve relies on the forces of gravity and reverse flow. It features a hinged disc that opens or closes depending on the pressure of the flowing medium. During forward flow, the disc swings off the seat, allowing the fluid to pass through. However, when the flow is stopped, the disc swings back onto the seat, effectively blocking any reverse flow. The shut-off characteristics of the valve are influenced by the weight of the disc and the direction of the returning flow. These valves find their primary application in unidirectional pipelines, where they ensure that the fluid can only flow in one direction, minimizing the risk of any accidents.

 

 

Swing check valves find extensive applications in various industries including petroleum, chemical, pharmaceutical, fertilizer, power, and more. These valves are not only ideal for high-pressure pipelines but also prove to be suitable for water and wastewater systems. Thanks to their simplistic design, the construction of swing check valves is straightforward, allowing for easy installation and maintenance. Additionally, these valves offer the advantage of low pressure drop, making them an excellent choice for ensuring seamless flow in pipeline systems.

 

 

Our products are designed and manufactured in accordance with industry standards such as API6D, ANSI B16.34, and BS1868. This ensures that our products meet the highest levels of quality and reliability, providing our customers with peace of mind. Our meticulous attention to detail throughout the design and manufacturing process ensures that our products are able to function flawlessly in a wide range of complex applications, delivering impressive performance under even the most challenging conditions. So if you're looking for top-quality products that won't let you down, look no further than our API6D, ANSI B16.34, and BS1868 compliant solutions.

·Face to face dimensions: ANSI B16.10

Flanged ends for RF and RTJ are available in sizes ranging from 2 inches to 24 inches in accordance with ANSI B16.5 standards. For larger sizes from 26 inches to 48 inches, flanged ends are manufactured in compliance with MSS SP-44 specifications. It is important to ensure that the content generated is similar to the original text, but utilizing different wording to maintain originality and avoid plagiarism.

·Butt-welding end: ANSI B16.25

·Test and inspection: API598

Upon request, we can provide other standards such as DIN, BS, and JIS. Feel free to ask for these standards if needed.

 

 

·Size: 2” to 36”

·Class: 150LB to 2500LB

The valve comes with a choice of either bolted or pressure seal cover, making it highly versatile for various applications. Its swing disc design ensures smooth flow control, while the threaded or welded seat ring provides a secure seal. Regardless of the cover type chosen, the valve is sure to deliver reliable performance that meets your needs every time.

·Material: WCB, WCC, WC1, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CN7M, LCB, LCC, duplex stainless steel, monel, alloy 20, Al-bronze C95400, cast iron and ductile iron, carbon steel, stainless steel, alloy steel, etc.
The materials used for our products are diverse, ranging from carbon steel, stainless steel, and alloy steel to specific grades such as WCB, WCC, WC1, WC6, WC9, C5, C12, CF8, CF8M, CF3, CF3M, CN7M, LCB, LCC, duplex stainless steel, monel, alloy 20, Al-bronze C95400, cast iron, and ductile iron. We take pride in offering a wide range of materials to meet the varied needs of our customers. Whether it's carbon steel for strength and durability, stainless steel for corrosion resistance, or alloy steel for enhanced performance, we have the right material for your requirements. Rest assured, our products are made from high-quality materials to ensure their longevity and performance.

·Operation: Lever with counterweight(option)

 

 

The valve operates by allowing fluid to flow freely when it moves in the designated direction, as the disc inside the valve opens up. If the fluid flow stops, or if it changes direction, the disc will swing back automatically and close the valve, preventing any backflow.

 

 

Valves with simple designs are remarkably dependable and easy to service as they have fewer moving components compared to other valve types.

One advantage of valves with a straight-through flow path is their ability to maintain a low pressure drop when fully open. This feature is highly beneficial as it ensures that the valve does not cause any significant reduction in pressure within the system. As a result, valves with this design are highly sought-after as they offer an optimal flow performance, allowing the system to operate at maximum efficiency.

Versatility is one of the key advantages of these products, as they can be used across various industries and applications. Whether it is in water treatment plants or the petrochemicals industry, these products have proven to be reliable and effective. Their ability to adapt to different environments and meet the specific requirements of each application is what sets them apart. They have been widely embraced in a range of sectors, thanks to their versatility and ability to deliver optimal performance in diverse settings. From large-scale water treatment facilities to complex petrochemical processes, these products have proven their worth time and time again.

One of the main advantages of these valves is their cost-effectiveness. This characteristic sets them apart from other valve types, which is why they are commonly chosen for various applications.

 

No.	Parts	Materials
1	Body	ATM A216 WCB
2	Seat ring	ASTM A105 + 13Cr
3	Disc	ASTM A216 WCB + 13Cr
4	Disc nut	ASTM A182 F6
5	Hinge	ASTM A216 WCB
6	Hinge pin	ASTM A182 F6
7	Gasket	spiral wounded stainless steel with graphite
8	Cover	ASTM A216 WCB
9	Cover bolt	ASTM A193 B7
10	Cover nut	ASTM A194 2H
11	Washer	Steel

 

Class 150

DN	50	65	80	100	125	150	200	250	300	350	400	450	500	600
NPS	2	2.1/2	3	4	5	6	8	10	12	14	16	18	20	24
L-L1(RF-BW)	203	216	241	292	330	356	495	622	699	787	864	978	978	1295
L2(RTJ)	216	229	254	305	343	368	508	635	711	800	876	991	991	1308
H	170	180	185	215	240	260	300	350	400	450	480	540	600	680
RF (Kgs)	15	26	27	42	69	75	124	200	310	428	555	775	835	1300
BW (Kgs)	12	17	18	32	57	60	106	174	258	368	483	685	720	1150

 

Class 300

DN	50	65	80	100	125	150	200	250	300	350	400	450	500	600
NPS	2	2.1/2	3	4	5	6	8	10	12	14	16	18	20	24
L-L1(RF-BW)	267	292	318	356	400	445	533	622	711	838	864	978	1016	1346
L2(RTJ)	283	308	333	371	416	460	549	638	727	854	879	994	1036	1368
H	170	185	215	235	270	300	340	350	420	480	520	600	670	750
RF (Kgs)	21	30	39	70	115	125	190	290	450	700	774	1000	1273	1650
BW (Kgs)	15	22	30	44	92	98	150	230	375	490	640	850	1100	1400

 

Class 600

DN	50	65	80	100	150	200	250	300	350	400	450	500	600
NPS	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24
L-L1(RF-BW)	292	330	356	432	559	660	787	838	889	991	1092	1194	1397
L2（RTJ）	295	333	359	435	562	664	791	841	892	994	1095	1200	1407
H	175	200	230	295	360	400	460	520	560	650	730	800	900
RF (Kgs)	28	38	52	87	224	354	626	790	892	1200	1600	2420	3150
BW (Kgs)	20	30	140	65	133	280	530	670	752	1020	1350	2050	2720

 

Class 900

DN	50	65	80	100	150	200	250	300	350	400	450	500	600
NPS	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24
L-L1(RF-BW)	368	419	381	457	610	737	838	965	1029	1130	1219	1321	1549
L2(RTJ)	371	422	384	460	613	740	841	968	1038	1140	1232	1334	1568
H	250	270	230	310	360	430	480	560	630	700	750	850	1000
RF (Kgs)	69	93	85	145	310	500	772	1080	1380	1810	2400	3500	4700
BW (Kgs)	60	78	70	120	265	385	600	860	1140	1510	2050	3100	4200

 

Class 1500

DN	50	65	80	100	150	200	250	300	350	400	450	500	600
NPS	2	2.1/2	3	4	6	8	10	12	14	16	18	20	24
L-L1(RF-BW)	368	419	470	546	705	832	991	1130	1257	1384	1537	1664	1943
L2(RTJ)	371	422	473	549	711	841	1000	1146	1276	1407	1559	1686	1972
H	250	270	300	330	450	500	560	650	750	800	900	1000	1200
RF (Kgs)	69	93	120	235	540	945	1275	1870	2560	3260	4080	5950	8000
BW (Kgs)	60	78	90	185	450	785	1065	1550	2100	2700	3400	5200	7100

 

http://www.frontvalves.com/