High Temperature HP Floating Ball 3 Piece Up to 650°C (1200°F)

Z28M


Size Range
1⁄4”- 6” (DN8-DN150)
Pressure Range
Class #2500, 414 bar, 6000 psi

High Pressure High Temperature Class 2500, full differential pressure for sizes up to and including 2″ (DN50), differential pressure of up to 255 bar (3700 psi) for sizes 2½” (DN65) and above with hybrid seats.

Pressure containing parts are in compliance with ASME B16.34, for wall thickness, design type-tested for burst testing of four times the pressure rating for 5 minutes. A one-size-up stem made of high tensile material complies with ASME B16.34 and API 6D for drive train requirements provides a sufficient safety factor during operation. A special hybrid seat design is comprised of a metal housing and polymer insert machined as a single unit which provides bubble tight shut-off (Rate A), combined with lower operating torque.

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Materials:

  • Stainless Steel, alloys, Carbon Steel – selected to meet temperature and application. ASME
    B16.34 listed cast or forged material for the valve body and ends.
  • Surface treatments & coatings – LTPN, HVOF Cr₃ C₂ (Chromium Carbide), HVOF WC-Co
    (Tungsten Carbide) and Stellite.

Robust design:

  • Pressure containing parts are in compliance with ASME B16.34 (with modifications for
    some series).
  • Leak rate to EN12266-1 Rate B (factory tested) is achieved by accurate grinding and
    lapping processes.
  • Constant preloading of ball/seats set obtained by Inconel 718 Belleville spring.

Pressure tested:

  • Designs are burst proof tested for 4 times the maximal working pressure.
  • Designed and tested per testing & acceptance criteria ANSI/FCI 70-2.

Downloads

Z28M Series- technical drawing
EN
Product Line Brochure
EN
ES
CN
DE
High temperature Catalog
EN

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