Grooved Flexible Coupling

Code：XGQT02
Size: 1”-16”(DN25-DN400)
Material: Ductile iron ASTM A536, 65-45-12
Dimension: ISO6182、AWWA C606、GB 5135.11
Connection：ASME B36.10、ASTM A53-A53M、ISO 4200
Thread: If have ISO 7-1,BS 21,BSPT, NPT,ASME B1.20.1
Pressure Rating: 175PSI-500PSI
Surface Treatment: Red Painting,Epoxy Coating ,Hot-Dip Galvanized,Electroplated
Bolt & nut: ASTM A449/ CLASS 8.8/ ISO 898
Gasket: EPDM, Nitrile, Silicone rubber, etc.
Certificate: UL Listed / FM Approved
Application: Fire Protection,Waterworks,HVAC,Plumbing,GAS,Irrigation,or other piping systems

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Product Description

Products Details

Grooved fittings are a new type of steel pipe connection fittings, also called clamp connections, which have many advantages. The design specification for automatic sprinkler system proposes that the connection of system pipes should adopt grooved connectors or threaded, flanged connections; pipes with a diameter equal to or greater than 100mm in the system should use flanges or grooved connectors in sections connect.

Grooved fittings include two broad categories of products:①The pipe fittings that play the role of connection and sealing include rigid joints, flexible joints, mechanical tees and grooved flanges; ②The pipe fittings that play the role of connection transition include elbows, tees, crosses, reducers, blind plates, etc.

The grooved connection pipe fittings used for connection and sealing are mainly composed of three parts: sealing rubber ring, clamp and locking bolt. The rubber sealing ring on the inner layer is placed on the outside of the pipe to be connected, and matches the pre-rolled groove, then buckle the clamp on the outside of the rubber ring, and then fasten it with two bolts. Due to the unique sealable structural design of the rubber sealing ring and the hoop, the grooved joint has good sealing performance, and the sealing performance is enhanced correspondingly with the increase of the fluid pressure in the pipe.

Product Drawing

Nominal Size mm/in	Pipe O.D mm/in	Working Pressure PSI/MPa	Bolt Size	Dimensions mm/in
Nominal Size mm/in	Pipe O.D mm/in	Working Pressure PSI/MPa	No.-Size mm	0	L	H
25 1”	33.7 1.327	500 3.45	2-M10x45	60 2.362	98 3.858	43.5 1.713
32 1 1/4”	42.4 1.669	500 3.45	2-M10x45	67 2.638	106 4.173	44 1.732
40 1 1/2”	48.3 1.900	500 3.45	2-M10x45	73 2.874	108 4.252	44 1.732
50 2”	60.3 2.375	500 3.45	2-M10x55	87 3.425	123 4.843	44 1.732
65 2 1/2”	73.0 2.875	500 3.45	2-M10x55	100 3.937	138 5.433	44 1.732
65 2 1/2”	76.1 3.000	500 3.45	2-M10x55	103 4.055	142 5.591	45 1.772
80 3”	88.9 3.500	500 3.45	2-M12x60	117 4.606	166 6.535	45 1.772
100 4”	114.3 4.500	500 3.45	2-M12x65	139 5.472	190 7.480	49 1.929
125 5”	139.7 5.500	400 2.75	2-M12x75	168 6.614	218 8.583	49 1.929
150 6”	165.1 6.500	400 2.75	2-M12x75	193 7.598	241 9.488	49 1.929
150 6”	168.3 6.625	400 2.75	2-M12x75	198.5 7.815	249 9.803	50 1.969
200 8”	219.1 8.625	300 2.07	2-M16x85	253 9.961	320 12.598	59 2.323
250 10”	273 10.748	300 2.07	2-M22x130	317 12.48	401 15.787	63 2.48
300 12”	323.9 12.752	300 2.07	2-M22x130	375 14.764	455 17.913	64 2.52
350 14”	355.6 14	300 2.07	3-M22x130	418 16.457	508 20	74 2.913
400 16”	406.4 16	300 2.07	3-M22x130	467 18.386	567 22.323	78 3.071
400 16”	425.5 16.752	300 2.07	2-M22x130	486 19.134	580 22.835	78 3.071

Quality Control：

what is the rigid and flexible Coupling difference？

Coupling play an important role in connecting pipe segments to prevent leaks caused by damaged or damaged joints while maintaining the integrity of the pipe in the process. It is a very suitable fitting for the pipe and pipe industry. Most pipe installations require multiple pipe sections to be joined together or cut to facilitate changing direction and traversing obstacles. A fitting is a concise pipe or pipe. It has a socket or female thread at one or both ends. Fitting allows two pipes or pipes of the same or different sizes to be joined together to form a long pipe.

Flexible coupling
Flexible couplings are designed to transmit torque while allowing some radial, axial and angular misalignment. They can accommodate angular misalignment of up to a few degrees and some parallel misalignment. Elastic couplings allow for some angular misalignment and axial movement, meaning they can be used to create smooth bends and absorb thermal expansion contractions in piping systems. In some cases, the use of elastic couplings can even exclude conventional expansion joints, loops and other expansion devices from the system entirely. When assembling a stretch rubber gasket, the gasket is slightly smaller than the pipe diameter at both pipe ends and produces the first seal. The two halves of the coupling are then placed around the washers that adapt to them. The coupling halves are bolted together to further improve the seal.

Application and Case

Products are used in fire protection system, water system, HVAC system, plumbing, gas system, irrigation system, etc.These products are used in many projects , such as China Taiwanese Building 101, Xiamen Building,Wuhan Expo Building and other famous landmark projects.