PTFE Double Flanged Butterfly Valve , Anticorrosion 4 Inch Butterfly Valve For PVC

Flanged RF DIN JIS ANSI Standard PTFE Full Lined Butterfly Valve for PVC

Technical Specification

Design and Manufacture Standard: ASME B16.34, HG/T 3704

Face-to-face Dimension: ASME B16.10 , GB/T 12221

Flange Standard: ASME B 16.5 ,GB/T 9119 ,DIN ,JIS

Inspection and Testing: API 598, GB/T 13927

Product Specification
Body Material: WCB, ASTM A395 , CF8 ,CF8M

Lining Material: PTFE , PFA , PO ,FEP, EPDM

Nominal Diameter: 2"-80"(DN50~DN2000)

Pressure Range: Class150 , PN6 , PN10 , PN16

Connection Type: Flange ,Wafer , Lug Connection

Operation Method: Manual ,Worn gear ,Electric ,Pneumatic actuator

Products Decription:

1. 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.

2. It features ease of maintenance, repeatable on-off, long life durability.

3. 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.

4. Lining material: PTFE, PFA, FEP, GXPO etc.

5. Connection type: wafer, flange, lug etc.

6. Operation methods: manual, worm gear, electric, pneumatic and hydraulic actuator.

7. Youfumi lined three-way ball valves are available as per the needs of applications in additional sizes and other than standard materials.

Alternatively metallic

 

Made of precision cast stainless steel Polished sealing surfaces, therefore very low friction values

 

Polished disc surfaces on request

 

Other materials on request, e.g. Hastelloy® C, titanium

 

Thick-walled PTFE and TFM-PTFE lining of the valve body

 

TFM-PTFE lining (2“-16“/DN 50-400 with PFA-lined disc: PTFE as standard, optionally TFM-PTFE)

 

Lining thickness 0.12- 0.15“ (3 -3.5 mm)

 

High permeation resistance

 

Vacuum-proof

 

Optionally antistatic PTFE-L, PE-UHMW

 

Wide sealing surfaces of body

 

lining for reliable sealing even with mating flanges with large radii, e.g. glass-lined components.

 

Permanently elastic seal in the valve opening by means of silicone insert under the PTFE body lining.

 

Optionally FKM insert (e.g. Viton®) for use with chlorine gas for example.

 

Double-action, maintenancefree and self-adjusting top and bottom

stem sealing

 

therefore reliable even with many switching cycles and fluctuating temperatures:

 

primary: body lining against disc/stem shoulder

 

secondary: O-ring PTFE, optionally RPTFE.

 

Long valve neck

 

permits optimal heat insulation without the installation of an elevated lever, additional stem extensions on request.

 

External corrosion protection

 

Epoxy coating, nuts and bolts made of stainless steel.

 

Centering to ISO 5211

 

Chlorine electrolysis options

 

Specially for use with wet chlorine gas:

 

Elastic insert made of Viton instead of silicone Body lining made of particularly

 

permeation-proof, modified PTFE instead of standard PTFE Body nuts and bolts made of steel, for example, instead of stainless steel Tantalum-coated ductile iron body