Semi-Lug Type Series 578

578

Product Description

• Design Standard: API609/EN593
• Nominal Diameter: DN50-DN500(2”-20”)
• Top Flange acc: EN ISO 5211
• Flange Connection: EN1092(PN6-10-16) ASME B16.5(CL150) JIS B2239 & JISB2220 (JIS5K /10K /16K )
• Temperature range: -10 to + 150°C
• Face to Face acc: EN558-1 row 20

Material Scope

AFFCO valve believes high quality valve starts from high quality casting,forging and other raw materials. we have profound experience in compliance with stringent material standards including NORSOK and wide variety blue chip end user specifications covering both metallic and non-metallic materials.
Increasingly, serve upstream operation conditions demanding not only primary components, but also accessories like bolting, bearing ,O-ring, packing and actuation components. AFFCO valve can cater the needs of any project specifications together with our vast network of material supply chain.

Full material range

Ductile iron

Carbon steels

Stainless Steel

Duplex/Super Duplex

Ni-Al Brz

Casting and forging grades

According to your project specifications

Non-destructive testing

PMI

MPE

DPI/LPE

Radiography/UT testing

Coating

Nylon/PTFE etc coating

Painting suitable for marine etc environment

High specification sub-componets

NBR/EPDM/VITON/SILICON/PTFE/PFA material for seat

Brass/Bronze material for bearing

Coating(Nylon etc) to wide range of project requirement

Material standards

ASTM/EN/DIN/JIS/GB standard material for project requirement

Machining

Machining accuracy is controlled by high precision CNC machine

Surface roughness

Surface roughness can reach Ra0.2

Design Feature

AFFCO valve supplies a full range of butterfly valves, Compact design and streamlined disc design a high Kv/Cv values, low pressure loss and energy cost. The replaceable seat for longer lifetime, no are maintenance friendly and easy in use.corrosion between body and liner. Because of the limited number of parts our valves are maintenance friendly and easy in use.

Top Flange

According ISO 5211

Shaft

Centric one piece shaft designs

100% bi-directional sealing result

No restriction to valve installation direction

Valve Body

Valve body material: Ductile JS1030 at least

Other materials are available

Support bearing

Extra support bearing for lower valve torque

Disc

Streamlined centric disc to reduce pressure loss and lower energy costs available in several materials

Bearing bush

Stainless steel bearing bush with PTFE coating

Reduce friction on shaft, decrease the torque of valve

Liner

Replaceable seat encapsulated to the body, no corrosion between valve body and liner:

Suitable for dry conditions
Longer life time
For end of line service
Low torque
No flange rubber gasket is needed
Other material is available

Stop plug

To Seal bottom side of the valve and to guide stem/shaft

Dimensions

DN NPS ФE F B C D Top Flange
(ISO 5211)
50 2″ 11 25 65 140 43 F07
65 2 1/2″ 11 25 73 152.5 46 F07
80 3″ 11 25 80 157.5 46 F07
100 4″ 11 25 98 176 52 F07
125 5″ 14 28 110 191 56 F07
150 6″ 14 28 133 203 56 F07
200 8″ 17 28 158 240 60 F07
250 10″ 22 30 194 273 68 F10
300 12″ 22 30 219 311 78 F10
350 14″ 27 29 294 345 78 F12
400 16″ 27 29 319 375 102 F12
450 18″ 36 38 352 405 114 F14
500 20″ 36 38 387 438 127 F14

CASE STUDIES

EXHIBITION – NEFTEGAZ 2024

CASE STUDIES

Affco’s largest plug valves aid desalination project in Saudi Arabia