مكان المنشأ:
الصين
اسم العلامة التجارية:
JINGNING
إصدار الشهادات:
CE，ISO
رقم الموديل:
RLJS
الوثيقة:
اتصل بنا
فيديو
فيديو
Rotating Flange Rubber Joint with PTFE Lining: Easy-Install Poly-Tetra-Fluoro-Ethylene Pipeline Growth Compensator for Refineries
The Rotating Flange Rubber Joint with PTFE Lining is a highly specialized pipeline growth compensator engineered to deliver maximum performance and rapid installation in the demanding environment of oil refineries and petrochemical facilities. Refinery piping systems are subjected to severe mechanical stresses, including massive thermal expansion cycles, high-frequency pump vibrations, and exposure to aggressive hydrocarbon derivatives and processing acids. This premium component solves these challenges by combining a free-rotating backing flange architecture with an impenetrable inner PTFE (Poly-Tetra-Fluoro-Ethylene) shield.
The integrated PTFE liner completely isolates the structural elastomer matrix from the chemical stream, preventing premature degradation, swelling, or blistering from volatile media. Meanwhile, the loose, rotating flange design allows field technicians to spin the steel flanges 360 degrees independently of the rubber body, making bolt-hole alignment effortless during difficult retrofits or tight-space maintenance turnarounds. By serving as an elastic, shock-absorbing bridge, this heavy-duty compensator eliminates piping fatigue and ensures zero-leakage security across your refinery infrastructure.
Performance characteristics
Effortless Rotating Flange Installation: The backing flanges spin freely around the molded composite collar, allowing for rapid, stress-free bolt alignment without placing any twisting or torquing strain on the rubber-PTFE bellows during setup.
Refinery-Grade Chemical Defense: The high-density PTFE lining remains completely inert and non-reactive when continuously exposed to aggressive refinery media, including crude oil fractions, aromatic hydrocarbons, concentrated acids, and sour water.
High-Capacity Thermal Growth Compensation: The engineered single-sphere bellows configuration yields smoothly to extreme dynamic piping shifts, simultaneously absorbing multi-axial movements such as axial compression, axial extension, and lateral offsets.
Premium Acoustic & Vibration Damping: The resilient composite rubber outer shell acts as a powerful kinetic energy dampener, swallowing high-frequency mechanical vibrations from refinery transfer pumps and compressors to protect downstream instrumentation.
Flared Full-Face Sealing Security: The internal PTFE liner extends fully through the bore and flares outward across the entire sealing face of the rotating flanges, acting as a built-in, blowout-proof gasket that prevents corrosive fluids or hazardous vapors from weeping past the joint interface.
Product Specification
| Size | Length | Allowable Movements in Operation | ||||
| mm | inch | mm | Axial Compression mm | Axial Extension mm |
Transverse Movement mm |
Angular Deflection mm |
| 25 | 1 | 130/152 | 20 | 12 | 14 | 15° |
| 32 | 1 1/4 | 95/130/152 | 20 | 12 | 14 | 15° |
| 40 | 1 1/2 | 95/130/152 | 20 | 12 | 14 | 15° |
| 50 | 2 | 105/130/152 | 20 | 12 | 14 | 15° |
| 65 | 2 1/2 | 115/130/152 | 20 | 12 | 14 | 15° |
| 80 | 3 | 130/135/152 | 20 | 12 | 14 | 15° |
| 100 | 4 | 130/152 | 20 | 12 | 14 | 15° |
| 125 | 5 | 130/152/165 | 20 | 12 | 14 | 15° |
| 150 | 6 | 130/152/185 | 20 | 12 | 14 | 15° |
| 200 | 8 | 130/152/210 | 20 | 12 | 14 | 15° |
| 250 | 10 | 130/203/230 | 20 | 12 | 14 | 15° |
| 300 | 12 | 130/203/245 | 25 | 16 | 22 | 15° |
| 350 | 14 | 200/255 | 25 | 16 | 22 | 15° |
| 400 | 16 | 200/255 | 25 | 16 | 22 | 15° |
| 450 | 18 | 200/255 | 25 | 16 | 22 | 15° |
| 500 | 20 | 200/255 | 25 | 16 | 22 | 15° |
| 600 | 24 | 260 | 25 | 16 | 22 | 15° |
| 700 | 28 | 260 | 25 | 16 | 22 | 15° |
| 800 | 32 | 260 | 25 | 16 | 22 | 15° |
| 900 | 36 | 260 | 25 | 16 | 22 | 15° |
| 1000 | 40 | 260/300 | 25 | 16 | 24 | 15° |
| 1100 | 44 | 300 | 25 | 16 | 24 | 15° |
| 1200 | 48 | 300 | 25 | 16 | 24 | 15° |
|
Note: If the medium is oil, acidic or alkaline substances, and there are special requirements for the working temperature, you can customize it by sending a letter or drawing. Please specify when ordering |
Product Details
Production Flow
|
1.Raw material Top level CR/EPDM/NBR rubber raw materials, No recycled rubber |
2.Plasticating and mixing Special Formulation for better Bending with Nylon,For Better Strength,Sealing |
3.Workblanks wraping Cooper plated steel wire reinforcement prevent pull off |
|
4.Vulcanizing Automatic vulcanization machine ensure vulcanization time and pressure |
5.Inspecting |
6. Packaging |
Application
Rubber Expansion Joint Standard are widely used in various fields, including construction, chemical industry, shipbuilding, tap water, gas, chemical pipelines, petroleum pipelines, food pipelines, air conditioning pipelines, and sewage treatment.
Our Services
1.24-hour online
2.Free samples provided
3.Support customization
4.Provide drawings
5.Multiple payment styles to choose from
6.Factory inspection (material, specifications, quantity, pressure, packaging)
7.Long warranty period
8.Suitable packaging for transportation
Our Customer
Certificate
FAQ
In complex refinery layouts, rigid pipelines are often slightly misaligned, making fixed-flange installation incredibly time-consuming and dangerous, as forcing alignment twists the joint. The rotating (or floating) flange design allows the metal flange to spin 360 degrees completely independently of the rubber body. Technicians can match any bolt pattern instantly without placing any damaging pre-installation torque on the internal rubber or PTFE liner.
Yes, absolutely. Standard unlined elastomers like EPDM or natural rubber will rapidly soften, swell, and fail if they come into direct contact with petroleum products. The pure, high-molecular-weight PTFE lining creates an impenetrable barrier that keeps the oil and volatile hydrocarbons completely isolated from the outer structural rubber, ensuring long-term material stability.
No separate gaskets are needed. The internal PTFE liner extends completely through the throat of the joint and wraps over the face of the rubber collar. This flared PTFE face creates a built-in, full-coverage sanitary and chemical gasket. When compressed evenly against your pipeline’s mating flange, it forms an immediate, dependable, leak-proof seal.
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