DN 65 Grooved Flexible Coupling with FM UL Certificate in Fire System Project

• Customization: Available
• After-sales Service: Yes
• Warranty: 3 Years
• Model NO.: Grooved Flexible Coupling
• Connection: Grooved Connection
• Structure: Universal
• Flexible or Rigid: Flexible
• Material: Iron
• Standard: Standard
• Material Standard: Ductile Iron ASTM A536/65-45-12
• Dimension: ISO6182/Awwa C606/GB 5135.11
• Connection Standard: ASME B36.10/ASTM A53-A53m/ISO 4200
• Pressure Rating: 175psi-500psi
• Surface Treatment: Red Painting/Epoxy Coating
• Gasket: EPDM/Nitrile/Silicone Rubber
• Application: Fire Protection/Waterworks/HVAC/Plumbing/Gas
• Certificate: UL Listed / FM Approved
• Transport Package: Carton with Pallet
• Specification: 1′′ - 12′′
• Origin: China
• HS Code: 7307110000
• Production Capacity: 50000 Tons / Years
• Package Size: 30.00cm * 30.00cm * 30.00cm
• Package Gross Weight: 20.000kg

Product Description

Product Description

A grooved reducing flex joint is a mechanical pipe joint that allows pipes of different diameters to be joined while providing a degree of flexibility. These couplings consist of two grooved end fittings and a flexible gasket or sleeve that is installed on the pipe. Grooves on the pipe ends provide a strong mechanical connection when the fitting is tightened.

Application:
Grooved reducing flexible joints are commonly used in a variety of piping systems such as:

HVAC (Heating, Ventilation, and Air Conditioning): Used to connect ducts in HVAC systems where flexibility may be required due to thermal expansion and contraction.

Fire Protection Systems: Typically used in fire sprinkler systems to connect pipes of different sizes while allowing for movement due to temperature changes.

Water and Wastewater Systems: For water and drainage systems where flexibility and ease of installation are important.

Industrial Piping: Used in industrial applications where grooved coupling systems are favored for their simplicity and speed of installation.

Material standards for groove couplings:
Material standards for grooved couplings are often set by industry organizations and standards bodies. The material used for grooved joints is usually ductile iron, but stainless steel and other materials can also be used, depending on the application and specific requirements.

Standards governing grooved couplings include:

ANSI/AWWA C606 - Groove and Shoulder Joints for Ductile Iron Pressure Piping and Fittings: This standard covers groove and shoulder joints for ductile iron pressure piping, fittings, and other components.

ASTM A536 - Standard Specification for Ductile Iron Castings: This standard covers compositional, mechanical, and other requirements for ductile iron castings.

NFPA 13 - Standard for Installation of Sprinkler Systems: This standard, published by the National Fire Protection Association, provides guidance for the installation of sprinkler systems, including the use of grooved joints.

Nominal Size mm/in	Pipe O.D mm	Working Pressure PSI/Mpa	Dimensions      mm			Bolt Size	Certificate
			L	H	W	NO.-Size mm
65X50/212X2	73X60	300/2.07	143	102	45	M10X65	FM  UL
65X50/30DX2	76X60	300/2.07	143	102	45	M10X65	FM  UL
80X50/3X2	89X60	300/2.07	163	118	47	M12X70	FMUL
80X65/3X212	89X73	300/2.07	163	118	47	M12X70	FMUL
100X50/4X2	114X60	300/2.07	200	150	50	M12X70	FMUL
100X65/4X212	114X73	300/2.07	200	150	50	M12X70	FM  UL
100X65/4X3OD	114X76	300/2.07	200	150	50	M12X70	FM  UL
100X80/4X3	114X89	300/2.07	200	150	50	M12X70	FMUL
150X100/612ODX4	165X114	300/2.07	270	200	51	M16X85	FM  UL
150X80/6X3	168X89	300/2.07	270	200	51	M16X85	FMUL
150X100/6X4	168X114	300/2.07	270	200	51	M16X85	FM  UL
200X150/8X612OD	219X165	300/2.07	335	260	63	M20X110	FM  UL
200X150/8X6	219X168	300/2.07	335	260	63	M20X110	FMUL

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.

FAQ

1. What is the minimum quantity of the order? 
Answer: The purchase volume of mixed products is 4 tons

2. How long is the delivery time of the order?
Answer: The delivery time for general orders is about 30 days. If the order is urgent and we have stock, around 7 days.

3. What payment methods do you accept?
Answer: We accept payment terms such as TT, L/C, DP, Western Union, Paypal, etc.

4. Where is your departure port of shipment? Is it possible to deliver to the designated warehouse?
Answer: The port of departure of our goods is generally Tianjin Port or Qingdao Port. We can transport the goods to designated warehouses, such as Yiwu, Guangzhou, etc.

5. What certificates do your products have?
Answer: Our products have FM/UL certificates, and we cooperate with third-party quality inspection certification before the factory, such as SGS,TUV

6.What are the series of your products?
Answer: Our products are divided into heavy series, medium series and light series according to different markets and standards. In order to buy more competitive products for you, please communicate your purchasing needs with the salesperson.

7. Do product packaging cartons and labels support customization?
Answer: Packaging cartons and labels can be customized according to customer requirements.

8.Does the purchased product support customization?
Answer: The product supports customization, but there are purchase quantity requirements and mold costs. For details, please consult the salesperson.

9.What are the packaging methods of the product?
Answer: The packaging of the product includes carton packaging, pallet packaging, wooden box packaging, and woven bag packaging.