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Envelop Flanges

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MOQ : 1 Unit

Envelop Flanges Specification

Product Type
Envelop Flanges

Material
PTFE (Polytetrafluoroethylene) + SS (Stainless Steel)

Automation
Manual

Function
Pipe connection and sealing

Capacity
Varies as per size (customizable)

Temperature
-200C to 250C

Dimension (L*W*H)
As per ANSI/ASME/DIN standards

Weight
Depends on flange size and material

Color
White (PTFE face) / Metallic (Steel body)

Envelop Flanges Trade Information

Minimum Order Quantity
1 Unit

Payment Terms
Cheque

Supply Ability
3 Units Per Month

Delivery Time
2 Days

Sample Available
Yes

Packaging Details
Wooden Box Packaging.

Main Domestic Market
All India

Certifications
ISO 9001:2015

About Envelop Flanges

As a customer centric manufacturer and exporter, we are offering premium quality Envelop Flanges. Made of good quality PTFE material, these Envelop Flanges are used as suitable sealing accessories for tire repairing machinery. Available in 22.5, 20, 16, 14, 13 and 12 size options, these are hydraulically pressed and are light in weight. High temperature proof design, unique mechanical properties, thermal resistance capacity, low flammability, low friction co efficiency, chemical resistance capacity, high insulation level and non sticky surface are some special features of these Envelop Flanges.

Hydraulically prssed & light weight.
Sizes available: 22.5, 20, 16, 14, 13, 12

Technical Specifications

Product Code	KMT-007
Brand	KMT
Material	PTFE
Shape	Round
Thickness	3 mm
Size	22.5,20,16,14,13,12 inch

Exceptional Corrosion Resistance

The PTFE envelope combined with a stainless steel core provides unrivalled protection against aggressive chemicals. This design ensures longevity and reliability even when exposed to harsh substances, making the flanges ideal for demanding process environments such as chemical and pharmaceutical plants.

Precision Sealing and Safety

Engineered for tight sealing, these flanges undergo hydrostatic and pneumatic leakage tests as per industry standards. The combination of PTFE and steel ensures a smooth, mirror-like finish for the sealing surface, reducing the risk of leakage and promoting operational safety.

Versatile Compatibility

Envelop Flanges are available in multiple standards, including ANSI B16.5, DIN, JIS, and BS. Users can select from Raised Face (RF) or Flat Face (FF) options, and the design supports use with PTFE enveloped gaskets, enhancing chemical resistance and sealing integrity across various installation requirements.

FAQs of Envelop Flanges:

Q: How are Envelop Flanges installed in corrosive fluid transfer applications?

A: These flanges are installed by bolting them to pipe ends, using suitable PTFE enveloped gaskets to ensure a leak-proof connection. The bolted setup is manual and strictly follows standardized dimensions to facilitate compatibility and ease of installation.

Q: What are the major benefits of using PTFE stainless steel envelop flanges in the chemical and pharmaceutical industry?

A: The primary benefits include superb resistance to aggressive chemicals, excellent sealing performance, and extended operational life. Their compatibility with PTFE gaskets and mirror-finished sealing surfaces make them particularly effective for handling highly corrosive fluids in sensitive environments.

Q: When should I choose a raised face (RF) versus a flat face (FF) envelop flange?

A: Raised face (RF) flanges are preferred for applications requiring enhanced sealing under higher pressure, while flat face (FF) options are more suitable where pipelines and equipment have flat surfaces or lower pressure requirements. Selection depends on the systems operational pressure and alignment needs.

Q: Where are these envelop flanges commonly used in industry?

A: Envelop flanges are widely utilized in chemical, petrochemical, pharmaceutical, food processing, and water treatment sectors, particularly for transfer lines and equipment dealing with corrosive or hazardous fluids.

Q: What manufacturing process is used for these flanges and why?

A: These flanges are manufactured using forging and machining techniques. Forging enhances the mechanical strength, while machining ensures precision in dimensions and a smooth, mirror-finished PTFE envelope for optimal sealing and corrosion resistance.

Q: How are these flanges tested for leakage and quality assurance?

A: Flanges undergo both hydrostatic and pneumatic leakage tests, in accordance with standard procedures, to verify sealing effectiveness and durability before dispatch, ensuring compliance with industry requirements.

Q: What is the pressure and temperature range suitable for PTFE envelop flanges?

A: Envelop flanges can operate safely at pressures up to 100 bar and within a wide temperature spectrum from -200C to 250C, making them suitable for extreme processing environments.

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