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Instantly add the Series 4000 Marsh Hawk Venting Gauge Hatch and 50,000+ more product series to your store or catalog  
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Series 4000 Marsh Hawk Venting Gauge Hatch

Brand: Hawkeye Industries
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The Series 4000 Marsh Hawk combines the pressure and vacuum valve in an innovative design that requires only one shared gasket. To improve valve sealing performance, gaskets are factory coated with a pliable oil-based sealant suitable for sour service. An optional silane-based sealant is also available. Both sealants are available in small packages for maintenance and reapplication.
Features
Deep-set venting gauge hatch
  • The Series 4000 Marsh Hawk TRV offers tank access combined with pressure and vacuum relief in a deep-set design.
  • Situating valve seats below the tank roof permits latent heat from the product to keep the seals ice-free.
Reliable, bubble-tight sealing
  • The Series 4000 has class-leading seal performance as compared to any other premium or economy venting gauge hatch currently available.
  • Improved sealing performance eliminates flutter and periodic small-scale venting which can cause frost closure in competitor top-mount hatches.
Variety of pressure settings
  • The Series 4000 Marsh Hawk pressure relief is adjustable between 2 ozsi and 16 ozsi in 2 ozsi increments.
  • The optional double-weight spring allows relief pressure between 18 and 32 ozsi, in 2 ozsi increments.
  • 1 ozsi increments optionally available.
  • Vacuum relief is fixed at 0.4 oz.
Suitable for Sour Service
  • The Series 4000 is ready for Sour Service out of the box with FKM (Viton) seals and stainless springs.
  • For more adverse applications, alternative seal and spring materials are available, along with hard anodization or fusion-bond epoxy coatings.

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Specifications

Brand

Function

  • Venting Gauge Hatch

Temperature Range

  • FKM: - 26 °C to 204 °C
  • FEPM: -9 °C to 230 °C
  • FFKM: -18 °C to 320 °C

Pressure Relief Type

  • Direct-acting, Spring-loaded

Pressure Relief Range

  • 2 to 32 ozsi

Vacuum Relief Range

  • 0.4 ozsi fixed

Tank Connection

  • 8” API

Documentation

Brochure

Instructions

Product Literature

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