Bellows - Compensatori in PTFE

Product catalog summary

Overview: This document outlines the technical specifications and guidelines for PTFE expansion joints by Diflon Technology, designed to manage thermal expansion and contraction in piping systems.

Specifications:

Material: PTFE compliant with ASTM D-4895.
Flange Standards: Compatible with DIN 2501, PN 10, and ASME/ANSI B16.5 Class 150 standards.
Temperature Range: Operates effectively between -30°C and +230°C (-20°F to +440°F).
Size Range: Available from DN 15 to DN 600 (1/2” to 24”).

Design Features:

Equipped with reinforcing rings and available in 2, 3, or 5 convolute configurations.
Loose flanges facilitate easy installation.
Allows for a maximum angular deflection of approximately 7° and axial travel without misalignment.
Burst pressure is about four times the maximum working pressure at room temperature.

Materials:

PTFE as per ASTM D-4895.
Standard flange materials include ANSI 316-1.4571, with options for Hastelloy C4.
Additional materials include zinc-plated RSt 37-2 and stainless steel options.

Installation and Usage Recommendations:

Internal PTFE sleeves are advised for abrasive fluids.
Flanges up to DN 400/16” have two limit bolts; larger sizes have three.

Performance Parameters:

Compression force is calculated as FC = C x √S (N), where C is a constant and S is the travel in mm.
Extension force is calculated as Fw = W x S (N), where W is a constant.

Notes:

Dimensions are indicative; other diameters available upon request.
Values are average and may vary due to processing conditions.

Bellows - Compensatori in PTFE

Bellows - Compensatori in PTFE

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