Fiberglass Reducers
Fiberglass Reducers
Fiberglass Reducers
Fiberglass Reducers

Fiberglass Reducers

These are key fittings in fiberglass piping systems used to connect pipes of different diameters. Their main function is to change the flow rate and velocity of the piping system. 

Fiberglass reducers (FRP reducers) are pipe fittings used to connect pipes of different diameters, enabling smooth flow transition and pressure control in piping systems.

Unlike elbows, tees, or flanges, reducers are specifically designed to change pipe size rather than direction or connection type.


Products Description

Fiberglass reducers (FRP reducers) are pipe fittings used to connect pipes of different diameters, enabling smooth flow transition and pressure control in piping systems.

Unlike fiberglass elbows, tees, or flanges, reducers are specifically designed to change pipe size rather than direction or connection type.

These are key fittings in fiberglass piping systems used to connect pipes of different diameters. Their main function is to change the flow rate and velocity of the piping system.



Types and Specifications


Based on their geometry, reducers are mainly divided into two types:


1. Concentric Reducers


Characteristics: The streamlines change symmetrically as fluid flows through.

Applications: Most vertical pipes and horizontal pipes without special requirements for fluid distribution.


2. Eccentric Reducers


Characteristics:

Flat Bottom Eccentric: The flat side is at the bottom. This is the most commonly used eccentric reducer, used in horizontal pipes. It prevents air pockets from forming at the reducer, facilitates venting, and maintains a consistent bottom elevation of the pipe.

Flat Top Eccentric: The flat side is at the top. Less commonly used, it can be used to prevent solid particles from accumulating at the top.


Applications: Horizontally installed pump inlet pipes, pipes requiring venting to prevent gas accumulation; or situations where a specific pipeline elevation needs to be maintained.


Fiberglass Reducers


Fiberglass Reducer vs Other FRP Fittings


TypeFunctionKey Difference
ReducerChange pipe diameterSize transition
ElbowChange flow directionAngle change
Tee / CrossSplit or combine flowBranch connection
FlangeConnect pipe sectionsDetachable joint


Fiberglass reducers are essential components in industrial piping systems, designed to connect pipes of different sizes while maintaining efficient flow and minimizing pressure loss.


Manufactured using high-strength fiberglass-reinforced plastic (FRP), these reducers offer excellent corrosion resistance, durability, and lightweight performance, making them ideal for chemical, water treatment, and marine applications.


We provide concentric and eccentric FRP reducers, fully customizable to your specifications.


Technical Specifications

ParameterSpecification
DiameterDN15 – DN3000
TypeConcentric / Eccentric
Pressure Rating0.6MPa – 2.5MPa
Temperature≤120°C
MaterialPolyester / Vinyl Ester / Epoxy
StandardANSI / DIN / JIS


Fiberglass Reducers vs Steel Reducers


FeatureFRP ReducersSteel Reducers
Corrosion ResistanceExcellentPoor
WeightLightweightHeavy
MaintenanceLowHigh
Lifespan20–50 years5–10 years
Cost EfficiencyHighMedium



Custom Fiberglass Reducer Solutions

Key Features & Benefits

✔ Excellent Corrosion Resistance
Suitable for acids, alkalis, and aggressive fluids


✔ Smooth Flow Transition
Minimizes turbulence and pressure loss


✔ Lightweight Structure
Easy to transport and install


✔ High Strength & Durability
Reliable under industrial pressure conditions


✔ Long Service Life (20–50 Years)
Low maintenance and replacement cost


Send us your requirements and get:

Free technical consultation

Competitive pricing

Fast production


Fiberglass Reducers


Main Application Areas

Pump Inlet and Outlet:


◆ Pump Inlet: Typically uses an eccentric reducer (flat bottom) to prevent gas buildup at the pump inlet and protect the pump impeller. Installation must be "flat top," meaning the flat section is at the top, to achieve automatic venting.


◆ Pump Outlet: Typically uses a concentric reducer, connected to an enlarged pipe to reduce flow velocity.


Connection between Piping System and Equipment Interface: When equipment interface dimensions do not match pipe dimensions.

Process Flow Requirements: In pipe sections where flow velocity needs to be changed to match process requirements.

All FRP piping systems requiring diameter changes.


Why Choose Us


✔ Professional FRP manufacturer

✔ Advanced molding technology

✔ Strict quality control

✔ Global export experience

✔ Fast response within 24 hours


Fiberglass Reducers


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