Project Description
- 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