Reducing 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: 300–500 psi Surface Protection: Red painted or hot dip galvanized Bolt Standard Options: ANSI or EN bolting configurations

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The Reducing Grooved Flexible Coupling is designed to connect two grooved pipes with different diameters while allowing controlled linear and angular movement. Its housing, gasket, bolts, and nuts create a leak-tight joint, making it suitable for fire protection and water piping systems that require both size transition and flexible pipe connection.

Key Features

Reducing coupling design for connecting different pipe diameters
Flexible joint allows controlled linear and angular movement
Helps accommodate limited pipe deflection during installation or operation
Housing, gasket, bolts, and nuts form a leak-tight grooved joint
Ductile iron housing for reliable strength and durability
Multiple gasket material options for different system needs
ANSI and EN bolting options available by size
Suitable for fire protection and grooved water piping systems

Product Configurations

Item	Details
Joint Type	Flexible reducing grooved joint
Main Components	Housing, gasket, bolts, and nuts
Connection Use	Joins two pipes with different diameters
Movement Design	Allows controlled linear and angular movement
Size Range	1-1/2″ x 1-1/4″ to 4″ x 1″
DN Range	DN40 x DN32 to DN100 x DN25
Pipe Diameter Range	48.3 x 42.4mm to 114.3 x 33.7mm
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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