Enactus-H75A4-B-Burgmann H75A4-B Replacement
FeaturesAPI 682 Category 2 and 3,Website:, Type A, Arrangement 3 sealDual seal in back-to-back arrangementBalancedCartridge unitRotating multiple springsIntegrated pumping deviceSuitable for pressure reversalsAdvantagesUniversally applicable both for retrofits or original equipmentEfficient stock keeping due to standardized componentsExtended selection of materialsExtended field of operation in terms of temperature and pressureMetal parts also in special materials availableSafe operation due to metal torque transmission at the rotating carbon seal ringsOperating rangeShaft 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.MaterialsSeal 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 applicationsRefining technologyOil and gas industryPetrochemical industryChemical industryPower plant technologyHighly volatile hydrocarbonsLPG plantsAPI 610 / ISO 13709 pumpsProcess pumpsRecommended piping plansProcess side*:01, 02, 03, 11, 12, 13, 14, 21, 22, 31, 32, 41Between seals:53A, 53B, 53C, 54Atmospheric side**:61, 62, 65A, 65B* Piping plans 11 ... 41: Integration in seal to be dimensionally checked.** Throttle bushing on request. serviceProvide special designAccording to the requirements and conditions for the custom processing
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