PTFE Lined Gear Operated Ball Valve

About PTFE Lined Gear Operated Ball Valve

PTFE Lined Gear Operated Ball Valve

Casting Material Specifications :-

• Cast Iron : IS 210, G.R.F. G.200
• Ductile Iron : ASTM A395
• Cast Steel: ASTM A216, G.R. WCB
• S. S. 304 : ASTM A351 CF8
• S. S. 304L : ASTM A351 CF3
• S. S. 316 : ASTM A351 CF8M
• S. S. 316L : ASTM A351 CF3M
• Alloy 20 : ASTM A351 CN7M

Design Standard :-

• Ball Valve, 2 Pieces : BS 5351, Short / Long Pattern.
• Ball Valve, 3 Pieces : BS 5351, Long Pattern.

Standard Resin Specifications :-

• PFA :   ASTM D 3418
• FEP :   ASTM D 2116

Service Temperature : -

PFA :-

• Maximum continuous service temperature : 265° C
• Melt point:   305° C

FEP :-

• Maximum continuous service temperature: 200° C
• Melt point : 260° C

Lining Thickness : - Minimum Lining thickness would be 3.0 mm over all wetted portion.

Chemical Inertness :-

• PFA/ FEP is chemically inert to most of the all chemicals and solvents with the exception of molten alkali metals.
• PFA / FEP lined valves are used to convey, and are inert to, these chemicals : All acids including hydrofluoric, sulphuric and aqua regia, all caustic, all chlorides organic and inorganic, all solvents, all bleach solutions, all peroxides, all phenols and any combinations of above materials.
• Combined with the chemical inertness of PFA / FEP is its unique non-stick property. Thus a PFA / FEP lined products eliminate or minimize the built up of deposits of the products which otherwise reduce flow and affect processing operations.     
• PFA / FEP Lined Ball Valves Finish :-
• The interior surface of all valves are clean and free of mold burrs, rust, scale or others that may adversely affect the performance of lining.
• The exterior surface of all valve bodies are be cleaned by sand / shot blasting and painted by 1 coat of Epoxy primer and 2 coats of Polyurethane Top coat.
• Products Inspection and Testing :-
• Hydrostatic Pressure :-
• Body Test   : 10 Kg/Cm2
• Seat Test    : 10 Kg/Cm2
• (Hydrostatic pressure at room temperature using clean water.)
• Electrostatic Pressure :-
• Non-destructive high-voltage test at an output voltage of 10,000 V. When electric contact is made, a visible/ audible spark or both occur at the probe if there is any defect in lining.

Visual Inspection :- All surfaces are free from blister, porosity or any other defect. All checks / tests are conducted before shipment.

Storage & Transport :-

• Each end of valve is protected by specially made rubber cap so that products are capable to withstand normal handling during transport.
• All the materials are supplied with export wooden case or card box packing depending upon the weight and mode of shipment.