Heavy-Duty Grooved Rigid 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 Rigid Coupling is designed for grooved pipe systems that require a strong, fixed, and leak-tight joint. Its ductile iron housing, sealing gasket, and carbon steel fasteners work together to hold the pipe ends firmly, while the grip teeth help prevent movement in fire protection and water piping installations.

Key Features

Heavy-duty rigid coupling for grooved pipe connection
Helps create a firm and leak-tight pipe joint
Grip teeth in the housing help limit pipe movement
Suitable for fixed pipe alignment applications
Ductile iron housing for high strength and durability
Carbon steel bolts and nuts for secure fastening
Multiple gasket material options for different system needs
ANSI and EN bolting options available by size

Product Configurations

Item	Details
Joint Type	Rigid grooved joint
Main Components	Housing, gasket, bolts, and nuts
Housing Design	Grip teeth structure for fixed pipe connection
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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