PFA/FEP Lined Butterfly Valve

LINED BUTTERFLY VALVES

The lined butterfly valves bi-directional flow is possible at maxmium operating pressure. Since the valve port corresponds to the piping diameter, a high flow capacity is guaranteed.
▪It features ease of maintenance, repeatable on-off, long life durability.
▪The concentric design is commonly used in the power generation, brewing, water and food industries and suitable for both gaseous and liquid service. Typically applied in chemical/petrochemical process, food and beverage, and pulp and paper etc.
▪ Lining material: PTFE, PFA, FEP, PO etc.
▪Connection type: wafer, flange, lug etc.
▪Operation methods: manual, worm gear, electric, pneumatic and hydraulic actuator.
▪The lined butterfly valves are available as per the needs of applications in additional sizes and other than standard material.

Material Specification

No. Name Material 1 Bolt A193 B7 A320 B8 A193 B8M 2 Plate A351 CFS 3 Upper body A216 WCB A351 CFS A351 CF8M A351 CF3 A351 CF3M 4 Steel sleeve SS304 5 O-ring VITONVITON＋PFA 6 Elastomer backing Silicone rubber, VITON 7 Stem SS410 SS420 17 4PH 8 Seat PFA FEP 9 Disc SS304/SS316＋Lining material 10 Elastomer backing Silicone rubber／VITON 11 Downside body A216 WCB A351 CFS A351 CF8M A351 CF3A 351 CF3M 12 Body bolt A193 B7 A320 B8 A193 B8M Design & Manufacture Standard HG/T3704, GB/T 12238 API 6D8 Face-to-face Dimension HG/T3704, GB/T 12221 ASME B16.10 Flange Standard HG/T 20592, GB/T 9119 ASME B16.5 JIS B2220 Inspection and Test Standard GB/T 13927, JB/T 9092 API 598 Nominal Diameter DN50~DN500 2″~20″ Nominal Diameter（MPa) 1.0 1.6 150Lb Pressure Test (MPa) Shell Test 1.5 1.5 1.5 High Pressure Sealing 1.1 1.1 1.1 Low Pressure Sealing 0.6 0.6 0.6 Temperature Range（℃） PFA: -30～200                        FEP: -30～150 Applicable medium Strong corrosive medium i.e. hydrochloric acid, Nitric acid, Hydrofluoric acid, Liquid chlorine, Sulfuric Acid and Aqua regia etc.

Technical Specification

Note: Test standard refers general valve standard, high pressure should be customized for processing.

Note：

◆The disc should be opened from angle 5-10°if not working.
◆ The valve should be stocked indoor, and the prior temperature range is 0-25°C(40-80°F).
◆ If stock in house, the valve should open and close every three month.
◆To make sure no heavy loading on valve when transported and being stocked.
◆ It is better to install lined butterfly valve in vertical position and make the actuator directly installed in the upside of butterfly valve, generally no inversion installed.
◆ Lined butterfly valve when connected to check valve or pump, an expansion joint will be needed to make sure the adjacent equipment won’t be affected.
◆When install the lined butterfly valve, the pipe should focus on center, and it will lead the disc external diameter impacting the inner diameter
of pipe, causing the damage of disc edge, resulting in the torque increasing and causing leaking.

HG/T 20592/ASME B16.5（Unit：mm）

Note: For more size please consult factory.

drawings:

HG/T 20592（Unit：mm）

Note: For more size please consult factory.

drawings:

ASME B16.5 /JIS B2220（Unit：mm）