PTFE Lining Pneumatic Fluorine Lined Butterfly Valve Specifications
1). Pressure Range: ≤ 1.6Mpa
2). Flanged Connection: DIN250-PN10/16-ANSI 150LB
3). Nominal Diameter: DN40-DN200
4). Application: Petroleum, ChemicalIndustry, Food, Medicine, Energy etc.
5). Medium Temp.: -79º C-+180º C (it depends on sealing material)
6). Dimension: GB/T 12221 J1 Series
ISO 5752 Short Series 20
BS 5155 Water Short/Medium
DIN 3202 Part 3 Series K1
7). Top Flange: ISO 5211
8). Body: Gray Cast Iron, Ductile Cast Iron
9). Disc: Ductile Cast Iron, Stainless Steel, Brass Alloy ect.
10). Stem: Stainless Steel
11). Seat: PTFE, PFA, F46, UHMWPE ect.
12). Operation: Handle, Worm wheel, Electrical, Pneumatic, Hydraulic Actuator, Electro-hydraulic Linkage
13). Leakage Level: RPTEA EA 12266-2 (Zero Leak)
PTFE Lining Pneumatic Operation Wafer Butterfly Valve Features
PTFE-lining butterfly valve is suitable for many special areas such as strong acid, alkali strong corrosive environment, petroleum, chemicals, food, etc.
Anti-corrosion resistance performance can be reached when PTFE is lined between valve body and valve disc.
Sealing Features
Valve stem sealing, not only has the sealing between the upper and lower disc and the seat (the first seal), but also uses a disc spring preload design and valve plate inlaid O-ring seal (second seal). Through the butterfly valve axial pressure, valve plate and valve seat sealing is more tight, at the same time second O-ring is squeezed to have third time sealing.
Self-lubricating bearing is available in the valve stem hole position ,which plays a role in axial positioning and stable rotation.
For PTFE-lining butterfly valve, layer thickness can reach 3 〜5MM which can withstand 12 〜20KV EDM (caliber and otherfactors), material optional PTFE / FEP/ PFA and so on.
PTFE Lining Pneumatic Operation Wafer Butterfly Valve Classification
