Eccentric Butterfly Valves

SIERRA model 7500 is an eccentric disc seated – double eccentric – butterfly valves. Valve body and discs are designed to provide minimal flow resistance. Precise tightness is ensured on both sides. The double eccentric effect enables the rubber sealing ring to separate easily from the body seat, results in a cam like motion to lift the seat from the seal during the first degree of opening, there by reduces the opening resistance, wear and improves the service life of the valve seat. The sealing ring can be easily changed in pipeline without disassembling the disc. 7500 BFV model is suitable for high-pressure waterworks applications, it is an excellent valve for isolation purposes, and it might also be used for throttling purposes under certain conditions

SIERRA model 7500 is an eccentric disc seated – double eccentric – butterfly valves. Valve body and discs are designed to provide minimal flow resistance. Precise tightness is ensured on both sides. The double eccentric effect enables the rubber sealing ring to separate easily from the body seat, results in a cam like motion to lift the seat from the seal during the first degree of opening, there by reduces the opening resistance, wear and improves the service life of the valve seat. The sealing ring can be easily changed in pipeline without disassembling the disc. 7500 BFV model is suitable for high-pressure waterworks applications, it is an excellent valve for isolation purposes, and it might also be used for throttling purposes under certain conditions

Overview

Eccentric Butterfly Valve Product Overview
Product Range DN100 – DN2600
Pressure Rating PN10, PN16 and 25
Temperature Range -20°C TO +70°C
Flange Dimensions EN1092-2 (DIN2501)
Hydrostatic Testing EN12266, ISO5208
Type Testing EN1074-1&2
Actuation Manual with GB, and/or electrically actuated
Certificates Manufactured under a certified ISO 9001 quality system
Applications Municipal water and irrigation pipeline mains and distribution networks, pumping stations and intakes, ground reservoirs and elevated tanks, water treatment plants, primary and secondary cooling for power stations

Features

Main Product Features
  • Double eccentric design prevents high friction between the disc rubber seal and body seat in during the first few degrees of opening and closing of the valve. The double eccentric design hence prolongs the life of the rubber seal.
  • Stainless steel seat design, is welded and precisely machined inside the valve body hence: Providing a lower coefficient of friction during operation, high corrosion, and wear resistance
  • Rubber seal & retainer mechanism (pressure activated rubber seal molded in one piece -no glued joint- is mechanically attached to a highly secured retainer sealing mechanism
  • Tight closure in both direction at valve rating pressures
  • Optimized disc design which provides minimal flow resistance
  • Compact design which requires small space
  • Flexible design allowing maintenance and replacement of disc seal in-line

Specifications

Double Eccentric Butterfly Valves – AR
Double Eccentric Butterfly Valves – EN

Materials

Double eccentric BFV material of construction

TDS

BFV7500 with GB-series13-PN10  
BFV7500 with GB-series13-PN16  
BFV7500 with GB-series20-PN10  
BFV7500 with GB-series20-PN16  
BFV7500 with EA-series13-PN10  
BFV7500 with EA-series13-PN16   
BFV7500 with EA-series20-PN10    
BFV7500 with EA-series20-PN16  

Dimensions

 

Valve Size

(mm)

Double eccentric butterfly valves dimensions

BFV valves manually with Gearbox

BFV valves with electric actuator

PN10-16

PN10-16

PDF File CAD File PDF File CAD File
100 EBFV100GB -10,16 CADEBFV100GB -10,16 EBFV100EA -10,16 CADEBFV100EA -10,16
150 EBFV150GB -10,16 CADEBFV150GB -10,16 EBFV150EA -10,16 CADEBFV150EA -10,16
200 EBFV200GB -10,16 CADEBFV200GB -10,16 EBFV200EA -10,16 CADEBFV200EA -10,16
250 EBFV250GB -10,16     CADEBFV250GB -10,16    EBFV250EA -10,16  CADEBFV250EA -10,16
300 EBFV 300GB -10,16     CADEBFV300GB -10,16  EBFV300EA -10,16  CADEBFV300EA -10,16 
350 EBFV 350GB -10,16  CADEBFV350GB -10,16  EBFV350EA -10,16 CADEBFV350EA -10,16
400 EBFV 400GB -10,16    CADEBFV400GB -10,16 EBFV400EA -10,16  CADEBFV400EA -10,16 
450 EBFV 450GB -10,16     CADEBFV450GB -10,16 EBFV450EA -10,16 CADEBFV450EA -10,16
500 EBFV 500GB -10,16    CADEBFV500GB -10,16 EBFV500EA -10,16  CADEBFV500EA -10,16 
600 EBFV 600GB -10,16    CADEBFV600GB -10,16 EBFV600EA -10,16  CADEBFV600EA -10,16 
700 EBFV 700GB -10,16  CADEBFV700GB -10.16 EBFV700EA -10,16 CADEBFV700EA -10,16
800 EBFV 800GB -10,16   CADEBFV800GB -10,16    EBFV800EA -10,16 CADEBFV800EA -10,16
900 EBFV 900GB -10,16    CADEBFV900GB -10,16 EBFV900EA -10,16 CADEBFV900EA -10,16
1000 EBFV 1000GB -10,16  CADEBFV1000GB -10,16 EBFV1000 EA – 10,16 CADEBFV1000 EA – 10,16
1200 EBFV 1200GB -10,16  CADEBFV1200GB -10,16 EBFV1200 EA -10,16 CADEBFV1200 EA -10,16
1400 EBFV 1400GB -10,16 CADEBFV1400GB -10,16 EBFV1400 EA -10,16 CADEBFV1400 EA -10,16
1500 EBFV 1500GB -10,16 CADEBFV1500GB -10,16 EBFV1500 EA -10,16 CADEBFV1500 EA -10,16
1600 EBFV 1600GB -10,16  CADEBFV1600GB -10,16 EBFV1600 EA -10,16 CADEBFV1600 EA -10,16
1800 BFV 1800GB -10,16  CADEBFV1800GB -10,16