FEP-PFA Lined Double Flanged Butterfly Valve
FEP-PFA Lined Double Flanged Butterfly Valve - Image 2
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FEP-PFA Lined Double Flanged Butterfly Valve

Aira Euro Automation, provides FEP/PFA lined double flanged butterfly valves in various sizes and pressure ranges. These corrosion-resistant valves are ideal for various applications.

Specification Details
Size Range 4” To 24” (100MM To 600MM)
Temperature Range PFA: 230°C / Working – FEP: 160°C
Working Pressure Up to 8 Kg/Cm²

”aira” Offers FEP / PFA Lined valves are well suited for consistent performance requirements in highly corrosive application Chlorine, Benzene, Sulphuric acid, Nitric acid, Phosphoric acid & Sea Water, Virgin grade resin & thick fluoropolymer linings provide for superior resistance to corrosive chemical effects, Absorption & Swelling.

Specification & Standard

Specification Details
Design & Manufacturer API 609 Category A / BS – EN – 593
Valve Face To Face Dimension API 609 Category A
Inspection & Testing API 598 / BS EN 12266 PART – 1
Leakage Class Class VI
End Connection Double Flanged
Valve Rating Flanged 150#
Spark Test 15 Kv DC to 40 Kv DC
Body Type Double Flanged
Shutoff Rating VI Class
Size Range 4” To 24” (100MM To 600MM)
Temperature Range -50°C To 300°C For Soft Seated Valves. Contact Works For Special Requirement
Pressure Class PN-6
Body Material CAST IRON (CI), DUCTILE IRON (DI), S.G IRON (SGI), WCB, CF8, CF8M, CF3M, SS 304L, DUPLEX, HAST ALLOY, MONEL
Disc Material CF8, CF8M, WCB + ENP, HAST ALLOY, DUPLEX, MONEL, CF3M
Sleeve Material PTFE, RPTFE, CFT, GFT, TFM-1600, AIRA-250, NYLON, DEVLON, PEEK, FEP
Flanged Drilling ISO 5211 II
Fugitive Emission Yes
Stem Material CF8, CF8M, WCB + ENP, HAST ALLOY, DUPLEX, MONEL, CF3M
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Features & Benefits

1 – UPPER STEM BUSHING: An upper stem bushing, retainer by a stainless steel ring, is provided to absorb actuator side thrusts and is acetal as standard or PTFE as an option.

2 – UPPPER STEM SEAL: Keeps environmental contaminants from entering the stem bore.

3 – BODY: Bodies are two piece wafer or lug style and are epoxy coated.All bodies meet full ASME Class150 or DIN 3840 flange drilling requirements (24” body is double flanged).

4 – BEARINGS: PTFE-impregnated steel bearing provided for the precision alignment of the upper and lower stem.

5 – BLOWOUT PROOF STEM: A shoulder is machined into the upper stem. The stem and the disc are pressed together during assembly creating a positive stem to disc connection.

6 – PRIMARY SEAL: The primary seal is achieved by an interference fit between the extra wide disc hubs and the contoured seat.

7 – SEAT DESIGN: The unique seat geometry lowers the seating unseating toque while reducing wear on the contacting parts.

Dimension Table

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