Enactus-H75A4-B-Burgmann H75A4-B Replacement

Features

• API 682 Category 2 and 3, Type A, Arrangement 3 seal

• Dual seal in back-to-back arrangement

• Balanced

• Cartridge unit

• Rotating multiple springs

• Integrated pumping device

• Suitable for pressure reversals

Advantages

• Universally applicable both for retrofits or original equipment

• Efficient stock keeping due to standardized components

• Extended selection of materials

• Extended field of operation in terms of temperature and pressure

• Metal parts also in special materials available

• Safe operation due to metal torque transmission at the rotating carbon seal rings

Operating range
Shaft diameter:
 d1 = 20 … 110 mm (0.79" … 4.33")
 Pressure: p1 = 42 bar (609 PSI)
 Temperature:
 t = -40 °C … +176 °C (-40 °F … +350 °F)*
 Sliding velocity: vg = 23 m/s (76 ft/s)
 Axial movement:
 d =50 mm ±1.0 mm
 d >50 mm ±1.5 mm
* Engineered up to 260 °C (500 °F) with FFKM (K) secondary seals.

Materials
Seal rings: Blister resistant carbon,
 Silicon carbide SSiC (Q1), RBSiC (Q2)
 Mating rings:
 Silicon carbide SSiC (Q1), RBSiC (Q2)
 Secondary seals:
 EPDM (E), NBR (P), FKM (V), FFKM (K)
 Springs: C-276 (M5)
 Metal parts: CrNiMo steel 316 (G) or equivalent,
 optional materials on request.

Recommended applications

• Refining technology

• Oil and gas industry

• Petrochemical industry

• Chemical industry

• Power plant technology

• Highly volatile hydrocarbons

• LPG plants

• API 610 / ISO 13709 pumps

• Process pumps

Recommended piping plans
Process side*:
01, 02, 03, 11, 12, 13, 14, 21, 22, 31, 32, 41
Between seals:
53A, 53B, 53C, 54
Atmospheric side**:
61, 62, 65A, 65B
* Piping plans 11 ... 41: Integration in seal to be dimensionally checked.
** Throttle bushing on request.
service
Provide special design
According to the requirements and conditions for the custom processing

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