Ptfe Lined Pipe Strainer Pfa Teflon Expansion Joints

Place of Origin:
Wenzhou,China
Packing:
Suitable Packing for Sea/Air Transport
Connection:
Flange
Pressure:
PN10,PN16,150LBS
Temperature:
-29℃ ~2000℃

A ptfe lined pipe configuration incorporates Y-type strainers to suppress fluid cavitation and capture particulate contaminants across bifurcated flow streams from minus twenty to four hundred fifty degrees Fahrenheit. Carbon steel outer housings sustain internal line pressures, while seamless fluoropolymer linings isolate aggressive chemical media from metallic surfaces. Channeling corrosive fluids into thirty-degree angled filter bodies stabilizes velocity gradients, shielding downstream control valves and meters from high-velocity particle impingement.

Bifurcated Geometry Stability and Resin Moldability Boundaries

Fabricating angled strainer chambers demands strict wall thickness control across interior intersection radii. In complex branched piping circuits requiring intricate internal geometry, engineers specify pfa lined pipe sections because melt-processable fluoropolymers fill tight tooling profiles without forming seam voids.

Installing a dedicated ptfe strainer provides pure chemical inertness against boiling nitric and hydrofluoric acids. Virgin fluoropolymer linings molded under isostatic pressure resist delamination during sudden pressure drops, while machined casing vents bleed off microscopic permeated vapors before pockets separate the liner from the steel wall.

Internal Screen Retention Mechanics and Flow Characteristics

Screen Substrate Aperture Micron Stability Negative Pressure Boundary Flow Resistance Coefficient
Sintered Virgin PTFE Maintains Pore Geometry Resists Full Vacuum Minimal Head Loss
Perforated ETFE Core Consistent Punch Diameter Near Full Vacuum Limits Moderate Head Loss
Fluorocarbon Mesh Wrap Deforms Under High DP Partial Vacuum Rating Elevated Head Loss

Acoustic Pulsation Decoupling and Thermal Motion Relief

Pumping equipment generates high-frequency vibrations that propagate through rigid strainer housings, accelerating mechanical wear at flange joints. Bolting teflon lined expansion joints to strainer ports isolates pump pulsations, neutralizes axial pipe displacement, and prevents bending stresses from cracking flared sealing faces.

Decoupling dynamic equipment movement from rigid filter housings preserves face-to-face flange compression, prevents gasket cold flow creep, and maintains containment across continuous chemical batch operations.

Thermal Shock Validation and Bolted Flange Assembly

Fabricated strainer assemblies undergo quality verification per ASTM F1545 protocols, enduring twenty thousand volt electrostatic spark testing to eliminate pinholes alongside alternating steam and cold water circulation cycles.

Flange bolting demands calibrated cross-pattern torque procedures, compressing flared fluoropolymer sealing surfaces evenly to prevent localized mechanical creep. Controlled torque application secures bubble-tight joint containment, stops volatile chemical emissions, and sustains reliable service throughout aggressive processing schedules.

Product Parameter

Materials of Main Parts

No. Part Name Material List
1 Body WCB,CF8,CF8M
2 Bonnet WCB,CF8,CF8M
3 Filter PTFE
3 Liner Material PFA, PTFE, ETFE, GXPO, PP/PE

Technical Specification

Design & Manufacture Standard HG/T 21637
Flange Standard HG/T 20592,  ASME B16.5,  DIN,  JIS
Inspection and Test Standard GB/T 13927, API 598
Liner Inspection (Spark Test) 10~20KV
Nominal Pressure PN10  PN16   Class 150
Temperature Range PFA:-29℃~200℃,  PTFE:-29℃~180℃,  EFFE:-20℃~150℃,  GXPO:-20℃~80℃,  PP/PE::-20℃~80℃

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