PTFE (FEB PFA) Lined Ball Valve

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Product Code : 72

Product Description

PTFE (FEB PFA) Lined Ball Valve

BALL VALVE is particular type of rotary valve used in Engineering Industries.
It is generally used in fluid handling system for flow control.
These type of rotary valves are fixed for corrosive applications.
Ball valves are used in many industries like Petrochemicals, Chemicals, Pharmaceuticals and Food, Vacuum Service, Clean Liquids and Gases, Corrosive Liquids and Gases, Hazardous Liquids and Gases Viscous Liquids, Dry Materials, Processing

Specifications:

Ball Valves are excellent in chemical applications, including the most challenging services (e.g. dry chlorine, hydrofluoric acid, oxygen). They are easy to operate, have standard face-to-face dimensions, high flow capacity, high pressure/temperature capabilities and ability to handle severe service chemicals.

Ball valves are considered high recovery valves, meaning a low pressure drop and relatively high CV, [coefficient of flow (GPM per 1 PSI pressure drop).

The benefits of these desirable flow parameters are reduced pump size and less system wear due to lower velocity. The ability to provide fire safe protection and handle severe service chemicals are two of the significant advantages of the ball valve. Can be installed either vertically or horizontally depending on the type of application.

Why PFA / FEP Lining?

In the chemical industry, both Fluor polymers - PTFE and PFA/ FEP- are used mainly in the form of linings.
For simple shapes, such as pipes, bends, T-pieces or reduction joints, PTFE is generally used. Using PTFE for lining of complicated shapes, such as valves is more difficult.
PFA / FEP, a thermoplastic material with a well-defined melting point, is processed by means of injection molding.
This method enables very precise wall-thicknesses to be achieved, with tolerances of less than 0.5 mm, even at tight radii and in undercuts. Practically no mechanical finishing is needed for lined parts.

PFA/ FEP properties include:

Chemical inertness
Negligible moisture resistance
Stress - cracking resistance
Wide service temperature range
Better sealing & wear resistance between parts -it is moldable & machinable to close tolerances.

Lined Ball Valves

Outer body graded cast iron as per ASTM Standard, other materials like cast steel / stainless steel available on request.
Lined ball valves offer high stability, rigidity eliminating potential leak path.
Bubble tight shut off: precision machined ball and seat ensures leak free Valve.
One-piece ball & stem: no possibility of damaging PFA/FEP Lining on ball by the stem

Features & Benefits

FEP liner is "Locked-in" to body, ball, & stem
Full port for unrestricted flow
Rugged & versatile
Anti-blowout stem
Bi-directional laminar flow
Live loading of gland packing
Superior long-lasting shut-off
Superior body joint technology
Reliable for vacuum services
Complete line of accessories

Body Material

Ductile Iron GGG40.3/ ASTM A395.
Cast Steel ASTM A216 Gr. WCB
Cast Iron IS2108 FG 260
ASTM A351 Gr. CF8/ AISI S.S.304
ASTM A351 Gr. CF8M / AISI S.S. 316

Lining Material

FEP (PTFE) - ASTM D 2116, Type IV
PFA (PTFE) - ASTM D 3307, Type II
ETFE (PTFE) - ASTM D 3159, Type I, Gr. 1

Technical Specification

Flange: As per ANSI B16.5 / B 16.42
Drilling: ASA # 150/ DIN 2632/2633/BS 10 Table D, E or F/ Customer Specification
Face to Face: ANSI B16.5/ DIN 3202/ BS EN 558-1/2
Lining Thickness: 3 to 5 mm
Testing Standard: BS EN 12266-1 and 2 (2003)
Test and Inspection Data
Spark Test: 15 K.V. D.C
Pneumatic Test: Seat - 6 kg/cm2
Hydraulic Test: Body - 20 kg/cm2/ Seat - 11 kg/cm2

Test & Inspection Data

Spark Test: 15 K.V. D.C
Pneumatic Test: Seat - 6 kg/cm2
Hydraulic Test: Body - 20 kg/cm2, seat - 11 kg/cm2

Description	MOC
Lined Side Piece	Graded CI/ Di / WCB/ SS + FEP/ PFA Lined
Lined Side Piece	Graded CI/ DI/ WCB/ SS + FEP/ PFA Lined.
Fasteners	MS/SS
Lined Integral	DI/ WCB/ SS +FEP/ PFA Lined
Seat Ring	PTFE
Glade Packing	PTFE
Stem	DI/WCB/ SS + FEP/ PFA Lined
Gland Washer	SS
Gland	DI/ WCB/ SS
Cap and Handle	MS