Caractéristiques
- Double seal
- Mtex-DN: API Plan 52 (53/54)
- Mtex9-DN: API Plan 53/54
- Cartridge
- Balanced
- Indépendant du sens de rotation
- Metal bellows
- Stationary Springs
- Pumping device independent of direction of rotation
Avantages
- Ideal seal for standardizations
- Universal applicable for packings conversions, retrofits or OEM
- No dimensional modification of the seal chamber (centrifugal pumps) necessary, small radial installation height
- Trouble-free running due to bellows unit with vibration dampers (essential in case of dry-running)
- No damage of the shaft by dynamically loaded O-Ring
- Self cleaning effect of the bellows
- Straightforward and easy installation due to pre-assembled unit
Plage de fonctionnement
Shaft diameter:
d1 = 25 … 80 mm (1″ … 3.15″)
Température :
t* = –40 °C … +220 °C (–40 °F … + 428 °F)
Pressure: p1 = 25 bar (232 PSI)
Sliding velocity: vg = 20 m/s (66 ft/s)
Barrier fluid circulation system:
p3max = 16 bar (232 PSI)
Δp (p3–p1) ideal = 2 … 3 bar (29 … 44 PSI)
Δp (p3–p1) max.
= 10 bar (145 PSI) at <120 °C (<248 °F)
= 5 bar (73 PSI) at ≤ 220 °C (≤232 °F)
API Plan 52 (53/54)
Pump startup:
Δp (p3–p1) max.16 bar (232 PSI) allowed
* Operating limits of O-Rings to be observed
Matériaux
Seal face:
Carbon graphite (A), Silicon carbide (Q1)
Seat:
Silicon carbide (Q1), Tungsten carbide (U2)
Secondary seals:
FPM (V), EPDM (E), FFKM (K)
Bellows: Inconel® 718 (M6)
Springs: Hastelloy® C-4 (M)
Metal parts: CrNiMo steel (G), Duplex (G1)
