Válvulas borboleta Keystone Série GRF (ISO)

Uma válvula borboleta de sede resiliente com flange duplo e design concêntrico de serviço pesado

Double flanged body design with face-to-face dimensions, according to EN 558 Series 20, API 609 and AWWA C504 short.
Designed according to EN 593 and API 609.
The seat is field replaceable and fully isolates the body and shaft from the flow.
Primary shaft sealing exceeds the pressure rating of the valve and prevents leakage through shaft area to atmosphere.
A secondary shaft sealing provides back-up safety.
A molded-in O-ring in the seat for flange sealing eliminates the need for gaskets.
Shaft seals prevent moisture penetrating into the shaft area.
Rounded polished disc edge gives full concentric sealing, lower torques, longer seat life and drop-tight shut-off.
Extended body neck allows for pipe insulation.
Actuator flange according to ISO 5211.
Top and bottom shaft bearings for optimized support and minimum friction and decreased torque.
Top bushing absorbs actuator side thrust loads.

Aplicação: Torres de resfriamento, circulação de ar, água de resfriamento, instalações e utilitários de processo, dessalinização

Material: Duplex, borracha Epdm, ferro maleável, aço carbono, buna-N, bronze de alumínio, aço inoxidável 316L, aço inoxidável 316, aço inoxidável 304, super Duplex