PTFE Lined Concentric Reducer

100% Spark Tested: Every single lined fitting is tested up to 20,000V DC across the full internal bore per ASTM F1545.

Flow Transition PTFE Lined Pipes & Fittings

PTFE Lined Concentric Reducer

Inline Centered Diameter Transition

Provides smooth diameter transitions between differing pipe sizes on a shared centerline axis. The fluoropolymer liner is thermally contoured into the steel conical shell to prevent stress cracking and delamination.

Lining Material: PTFE / PFA / FEP

Housing / Shell: ASTM A234 WPB / Carbon Steel Pipe

Size Range: 1" x 1/2" up to 12" x 8"

Pressure Rating: Class 150# / Class 300# / Full Vacuum

Operating Temp: -29°C to +200°C

Test Standards: ASTM F1545

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Key Engineering Highlights

Gradual taper minimizes pressure loss and eddy currents
Flared fluoropolymer faces on both small and large ends
Vacuum resistant under continuous operating conditions
Cast or fabricated body options available

All components are manufactured in our specialized industrial facility located at GIDC Chhatral, Dist. Gandhinagar, Gujarat. The seamless fluoropolymer liner completely shields all wetted metal surfaces from chemical attack and fluid contamination.

Available Construction Variants

Standard Concentric
Long Taper Concentric Reducer

Technical Parameter	Verified Specification Standards
Lining Material	PTFE, PFA, FEP
Body Material	ASTM A234 WPB, Carbon Steel Pipe
Size Range	1" x 1/2" up to 12" x 8"
Pressure Rating	Class 150# / Class 300# / Full Vacuum
Temperature Range	-29°C to +200°C
End Connection	Flanged ANSI B16.5 RF
Testing Standards	ASTM F1545

Lining Fluoropolymer Options

We select virgin grade fluoropolymers matched precisely to process chemistry and operating temperature:

PTFE: -29°C to +200°C, universal chemical inertness, in-house paste extrusion.
PFA: -29°C to +200°C, melt-processable, superior clarity and permeation resistance.
FEP: -29°C to +150°C, high dielectric strength and smooth non-stick surface.
PVDF / PP / HDPE: Cost-effective options for mild corrosive and water treatment lines.

Housing & Metallurgy Options

Rugged metallic outer shells provide high pressure containment and mechanical strength:

Cast Steel: ASTM A216 Gr. WCB for heavy-duty pressure valves and fittings.
Carbon Steel Pipe: ASTM A106 Gr. B seamless pipe spools with A105 flanges.
Ductile Iron: ASTM A395 / GGG40.3 for economical vibration-absorbing installations.
Stainless Steel: CF8 / CF8M (SS304/SS316) for highly corrosive external plant atmospheres.