FEP-PFA Lined Double Flanged Butterfly Valve

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Approvals

”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

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

Shout Off Rating

VI Class

Size Range

4'' To 24'' (100MM To 600MM)

Tempreature Range

PFA: 220°C/Working - FEP: 160°C

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

1 – UPPER STEM BUSHING: An upper stem bushing, retainer by a stainless steel ring, is provide 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 contoured seat.

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