Project Description

DUY ANSI DUAL SEALS

  • DUY ANSI DUAL SEALS
  • DUY ANSI DUAL SEALS
  • DUY ANSI DUAL SEALS
Item No.Description
1Seal face
2, 5, 7, 10, 13, 15O-Ring
3Spring
4Seat
6Shaft sleeve
8Cover
9Seal face
11Spring
12Seat
14Drive collar
18
Assembly fixture
19HSH Cap Screw
20Gasket
21Screw plug
22
Gasket
  • Ideal for use in ANSI process pumps
  • O-Ring is dynamically loaded to prevent shaft damage
  • Dimensional modification of the stuffing box chamber is not required due to short radial installation height
  • Ideal to convert and retrofit pumps with packings and large volume OEM production
  • Cartridge unit factory assembled for easy installation, which reduces downtime
  • Rugged design for long operating life
  • ANSI process pumps
  • Chemical industry
  • Food and beverage industry
  • Petrochemical industry
  • Pharmaceutical industry
  • Universally applicable
  • Water and waste water technology
  • ANSI
  • Seal face: Silicon carbide (Q1), Carbon graphite resin impregnated (B), Tungsten carbide (U2)
  • Seat: Silicon carbide (Q1)
  • Secondary seals: FKM (V), EPDM (E), FFKM (K), Perfluorocarbon rubber/PTFE (U1)
  • Springs: Hastelloy® C-4 (M)
  • Metal parts: CrNiMo steel (G), CrNiMo cast steel (G)
  • Sizes: d1 = 1.000″ …. 3.750″
    Other sizes on request
    Temperature: t= -40 °C … +220 °C (- 40 °F … +428 °F)
    (Check O-ring resistance)
  • Sliding face material combination BQ1
    Pressure: p1 = 25 bar (363 PSI)
    Speed = 16 m/s (52 ft/s)
  • Sliding face material combination Q1Q1 or U2Q1
    Pressure: p1 = 20 bar (290 PSI)
    Speed = 10 m/s (33 ft/s)
    Barrier fluid circulation system:
    p3max = 25 bar (363 PSI)
    Δp (p3 – p1 ) ideal = 2 … 3 bar (29 … 44 PSI),
    7 bar (102 PSI) for barrier media with poor lubricating properties)
    Pump startup:
    Δp (p3 – p1 )max = 25 bar (363 PSI) allowed
    Recommended supply medium: max. ISO VG 5
    Permissible axial movement: ± 1.0 mm, d1 ≥ 75 mm ± 1.5 mm
  • Dual seal configuration
  • Balanced design
  • Independent of direction of rotation
  • Cartridge construction
  • Available for standard (DUY-ASDN) and big bore (DUY-ABDN) seal chambers
  • Double pressure balanced
  • Designed with integrated pumping device for increased efficiency in circulation