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Keystone-P-P001183

Válvula borboleta Keystone Figura 129/239

Product Description

Válvula de serviço pesado com olhais/wafer e sede com cartucho de aço reforçado

Características

  • Replaceable, metal-reinforced seat, completely encapsulated by rubber, isolates the stem and body from the media and eliminates seat distortion due to high vacuum or turbulence.
  • Primary stem seal, formed by preloaded contact of disc hub with flatted seat surfaces, completely isolates stem and body from the line media.
  • Secondary stem seal, formed by an engineered interference fit of the stem through the seat, provides additional sealing integrity.
  • Rounded, polished disc edge provides full 360 degree concentric seating, minimum flow restriction, lower seating and unseating torques and maximum seat life.
  • Superior, one-piece thru-shaft design provides high-strength and positive disc control. Shaft ends are standardized for operator interchangeability.
  • Self-locking disc screws allow quick and easy disassembly and provide a positive connection.
  • Self-adjusting, bi-directional stem seal is suitable for full industrial vacuum and pressure, preventing external contamination of the stem area.
  • Heavy-duty, corrosion-resistant top bushing absorbs actuator side thrust loads.
  • Each valve is factory tested to 110 percent of specified pressure rating assures drop-tight shut-off.
  • Cast-in top plate is an integral part of the body and is standardized to allow direct mounting of all Keystone actuators.
Certificações
American Bureau of Shipping Shipboard, ABS
Ligação de extremidade
Com olhais, wafer
Aplicação
Estaleiros marinhos, sistemas de vácuo
Material
Bronze de alumínio, Buna-N, aço inoxidável 316L, aço inoxidável 316, aço carbono, ferro fundido, borracha Epdm, monel, aço inoxidável, ferro maleável
Temperatura operacional
Temperatura padrão (-40 °F - 250 °F)
Classe de pressão
ASME
Tipo de sede/selo
Resiliente
Classe de corte
Vazamento zero
Padrões
API 609, ASME B16.34
Tamanho da válvula
NPS 18 / DN 450, NPS 6 / DN 150, NPS 4 / DN 100, NPS 3 / DN 80, NPS 2-1/2 / DN 65, NPS 20 / DN 500, NPS 16 / DN 400, NPS 8 / DN 200, NPS 14 / DN 350, NPS 12 / DN 300, NPS 10 / DN 250
Padrão do tamanho da válvula
NPS, DN
Tipo de válvula
Borboleta
Meio
Ar, vácuo, água

Documentação e desenhos