Heavy-Duty Grooved Flexible Coupling

Material: Ductile iron ASTM A536, 65-45-12 Fastener Material: Carbon steel bolts and nuts Gasket Options: EPDM, nitrile, silicone rubber, etc. Pressure Rating: 500 psi / 3.45 MPa Surface Protection: Red painted or hot dip galvanized Bolt Standard Options: ANSI or EN bolting configurations

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The Heavy-Duty Grooved Flexible Coupling is designed for grooved pipe systems that require a leak-tight joint, controlled pipe movement, and higher working pressure. Its ductile iron housing, gasket, bolts, and nuts work together to provide reliable sealing while allowing limited linear and angular movement in fire protection and water supply pipelines.

Key Features

Heavy-duty flexible coupling for grooved pipe connection
Allows controlled linear and angular pipe movement
Helps accommodate pipe deflection during installation or operation
Higher pressure rating for demanding fire piping applications
Housing, gasket, bolts, and nuts create a leak-tight joint
Ductile iron housing for reliable strength and durability
Multiple gasket material options for different system requirements
ANSI and EN bolting options available by size

Product Configurations

Item	Details
Joint Type	Flexible grooved joint
Main Components	Housing, gasket, bolts, and nuts
Movement Design	Allows controlled linear and angular movement
Bolting Options	ANSI and EN bolt sizes available
Size Range	2″ to 12″
DN Range	DN50 to DN300
Pipe Diameter Range	60.3mm to 323.9mm
Application	Fire protection and grooved water piping systems

FAQ
Q1: Who are we?
A: We are a fire fighting equipment manufacturer based in Fujian, China. Since 2004, we have supplied a wide range of fire safety products for domestic and international markets, including fire sprinklers, hydrants, valves, hoses and extinguishers.
Q2: How do we ensure product quality?
A: We follow strict quality control procedures from raw material inspection to production and final shipment. Pre-production samples and final inspections can be arranged according to order requirements.
Q3: What products do we supply?
A: We supply fire sprinklers, fire extinguishers, fire hydrants, fire valves, fire hoses, hose reels, fire cabinets, foam equipment and other fire fighting accessories.
Q4: Why choose Sunroom?
A: Sunroom has over 21 years of experience in fire fighting equipment manufacturing. We offer a wide product range, support customized production, and provide certificates or technical documents according to product and project requirements.

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