pd_zd_02

Double Eccentric Butterfly Valve

Brief description:

DOUBLE ECCENTRIC BUTTERFLY VALVE

With EN1074-1 & EN1074-2 type approval certification, For use with drinking water, WRAS approved

PRESSURE RATING: PN10, PN16, PN25, PN40

SIZE RANGE: DN200 ~ DN4000

SEAT MATERIAL: EPDM/NBR/VITON/SILICONE/METAL


  • twitter
  • linkedin
  • facebook
  • youtube
  • instagram
  • whatsapp

Product Detail

FAQ

Product Tags

Product description

Valve design to EN 593, BS5155, DIN3354

Flange to EN 1092, ASME B16.5, ASME B16.1, AWWA C207

Face to face length to EN 558-1 / ISO 5752 series 14 or series 13

Stainless steel weld and finished body seat ensures a corrosion and wear resistant seat face.

Streamlined low profiled disc design verified by finite element analysis ensures the higher strength and the lower flow resistance

By means of seal gasket designed at joint between shaft bearing and disc, double O ring on shaft bearing and closed disc eyes, they form a dry operating condition for shaft and shaft seal to avoid the corrosion from service medium.

Anti-blow out shaft design.

Disc to shaft connection by means of taper pin or key(optional).

Self lubricating bearing in bronze or stainless steel lined PTFE reduce shaft friction and operating torque, the bearings keep the disc in center and prevent axial movements;

Multiple O rings in shaft sealing system could prevent outleakage and dirt into. The O rings on packing gland and shaft cover could be replaced easily without removing the valve from pipeline.

Suitable for full vacuum service conditions.

T profiled resilient seal ring is secured on the disc by a retainer ring and bolts, and ensures reliable sealing performance in double direction. The seal ring could be adjusted or replaced easily on site. Don’t need special tools.

External locking device will be provided on the non-drive shaft ends, to enable the gear to be removed with the valve remaining in service in the open or closed position.

Operated with gearbox + handwheel and with ISO 5210 top flange to be coupled with an electric actuator, if required at a later date.

Valve externally and internally fusion bonded epoxy coated with a thickness of 250micron (different coating/lining is available as special request) and color code RAL5005/5015/5017.

Suitable for the applications involving throttling service and for applications requiring valve actuation after long periods of inactivity.

Double Eccentric Butterfly Valve. (2)

Materials of component

Double Eccentric Butterfly Valve. (3)
Part No Description Material Part No Description Material
1 Gear housing Ductile iron,GJS400-15 10 Retainer ring Stainless steel, 1.4571
2 Key Stainless steel, 420 11 Disc seal ring Rubber, EPDM
3 Upper shaft Duplex SS, 1.4462 12 Screw Stainless steel,A2-70
4 Packing gland Ductile iron,GJS400-15 13 Taper pin Stainless steel, 420
5 O ring Rubber, EPDM 14 Valve disc Ductile iron,GJS400-15
6 Bolt Stainless steel,A2-70 15 Lower shaft Duplex SS, 1.4462
7 Shaft bearing Bronze, QAl9-2 16 Shaft bearing Bronze, QAl9-2
8 Valve body Ductile iron,GJS400-15 17 O ring Rubber, EPDM
9 Body seat Stainless steel, 316 18 Shaft cover Ductile iron,GJS400-15

(Other materials such as carbon steel, st. steel, duplex SS, aluminum bronze are available on request.)

  • Coating: fusion bonded epoxy coating, min. thickness 300 micron

    Suitable medium: potable water, sea water, TSE water, low-corrosive liquid etc.

    Suitable temperature: 0 ~ 80 ℃

    Pressure test to EN12266-1:   Leakage rate: Class A (Zero leakage) in both direction

    100% testing before delivery

  • Double Eccentric Butterfly Valve. (4)

Dimensions

Dimensions/PN10

Double Eccentric Butterfly Valve. (5)

Dimensions/PN16

Double Eccentric Butterfly Valve. (6)

Subscribe Now

An unmatched level of quality and serviceWe provide professional customized services for groups and individualsWe optimize our service by nsuring the lowest price.

Click to download
Write your message here and send it to us