Gauge Hatch & Venting Gauge Hatch

The Gauge Hatches and Venting Gauge Hatches are used to provide secure, vapor-tight, non-sparking access ports for storage tank dipping and sampling functions.

Gauge Hatches

Gauge hatches are usually engineered to offer easily available entry points for examination, measurement, and sampling inside storage tanks. These gauge hatches are fitted with a composition insert to guarantee a gas-tight, non-sparking closure. Flange plates provide blank for welding or drilled to match the customer requirements. Usually, such storage tanks store liquids and gases. They are fuel, chemicals, and petrochemicals, releasing vapor. In storage tanks where volatile substances are stored, vapor losses can occur during the inspection, measurement, and sampling inside storage tanks. There are various types of Guage Hatch designs.

Atmospheric Guage Hatch

Atmospheric Guage Hatches are designed for free vented atmospheric tanks. These hatches offer tank access when manual level gauging, temperature measurement, or sampling is required.

Product Information

  • Free lift produced with safety foot pedal
  • Available with aluminum, cast iron, carbon steel, or stainless steel
  • Non-sparking O-Ring seal
  • ANSI and DIN flanges
  • Sizes 4″(100mm) to 12″ (300mm)

Applications

Some varieties of gauge hatches allow easy access to atmospheric and Low-pressure liquid storage tanks. The purpose is for dipping also called manual level measurement, temperature measurement, and sampling.

Benefits

  • Strong construction to cope with regular use.
  • Range  of sizes and materials to suit a wide range of applications
  • Non-­‐sparking feature, provided using a PTFE or Nitrile rubber insert
  • The cover is created with a condensation rim. This inspires liquid drainage from the surface to minimize the possibility of freezing.
    • Lockable handle and gas-tight seal to 2.5 psig (CNC 102).
    • ATEX approved directive 94/9/EC

Principle of Operation

Delivers tank access when manual level gauging, temperature measurement, or sampling is needed. The safety pedal permits the operator to open the gauge hatch whilst remaining ‘hand-free to carry out the measuring process.

Atmospheric gauge hatch Model CNC 101/102 ensures easy access to atmospheric and low-pressure liquid storage tanks. This ensures manual level measurement (dipping), temperature measurement, and sampling. The safety pedal present in the Atmospheric gauge hatch permits the operator to open the gauge hatch whilst remaining ‘hands-free to continue the measuring.

Lockable Gauge Hatches are usually created to make sure easy access to storage tanks. It also controls vapor losses. The foot pedal in the Lockable Gauge Hatch enables the operator to open the cover whilst maintaining both hands-frees to perform gauging or sampling of the tank contents. Venting Gauge Hatches permit to development of pressure relief inside the tank. They are provided with “O” ring seats in nitrile rubber for good maintenance. There are various types of Gauge Hatches designed by various types of producers as follows.

CNC 102 Lockable Gauge Hatch

CNC 102 Series of lockable Gauge Hatches provide secure tank access. Manual level measurement, temperature measurement, or sampling process are those accesses.  It is required together with a gas-tight seal to 2.5psig.

Lockable Gauge Hatch – Lecore

The main function of the Lockable Gauge Hatches produced by Lecore is to allow easy access to storage tanks while controlling vapor losses. Lecore Dip Hatches are provided with “O” ring seats in nitrile rubber for good maintenance.

Construction Details:

  • Castings in aluminum LM4.
  • “O” ring seat in nitrile rubber.
  • Riveted hinge pins together with lockable hand nuts offer more security.
  • Designed and manufactured in South Africa according to the A.P.I. standards.

Lockable Gauge Hatch – Motherwell

They come up with various sizes and categories.

  • Flanges are made according to the standard pf  68,18 kg A.S.A. specifications.
  • Sizes vary with 100 mm, 150 mm, and 203 mm length categories in limited stock.
  • Other sizes are made on request.

Meanwhile, purple engineering provides cost-effective, flexible, and optimized gauge hatches and venting gauge hatches with strong technology to cope with regular use.

Purple Engineering Guage Hatch

Gauge Hatches provide a suitable means of gauging, sampling, and obtaining product temperature readings.

Combination gauge hatches are an economical combined unit that supplied pressure and vacuum relief. Combination gauge hatch model CNC 103 ensures manual level gauging or sampling. Ultimately it provides pressure and vacuum relief. In addition, security will be supplied to the unit using a padlock when it is closed.

Combination Gauge Hatch

Combination Gauge Hatches combined with Pressure and Vacuum Relief. CNC 103 Combination Gauge Hatches are a combined unit that allows manual level gauging or sampling. Ultimately it provides pressure and vacuum relief.

Product Information

  • Economical combined unit
  • Constructed in aluminum
  • Non-sparking seat insert
  • ANSI and DIN flanges
  • 8″(200mm) size
  • Standard settings 3.5″ wg pressure & 0. 865″ wg vacuum
  • The unit is padlocked to safeguard security when closed.

Combined free vents and Sampling hatches are gauge hatches that are shared with available vent hatches.

Gauge Hatches combined with Free Vent Hatches

CNC 141 Series Free Vents delivers easy tank access for sampling or dipping tank contents. It allows the tank to escape safely through the weather hood.

Features

  • Available with aluminum, cast iron, carbon steel, or stainless steel
  • The sizes are available in the size categories of 4″, 6″ & 8″
  • Stainless screen mesh
  • ANSI and DIN flanges
  • No sparking o ring seal
  • The unit is padlocked to safeguard security when closed.

Types YC and YT Manheads

OCECO Manheads provide a gas-tight closure. Through it, a man can enter a tank through the rooftop after the construction of the tank. The cover is cast iron casting. A non-sparking ring, which is positioned to seat against the machined edge of the body assures gas-tight closure.

Type “YC” Manheads are fitted with a composition insert. They are recommended for tank pressures up to 1 PSI. Type “YT” Manheads have a Teflon insert and can be used in more corrosive applications.

Specifications

  • Size is of 20 Inch
  • The body is constructed using carbon Steel
  • Cover with Cast Iron
  • Yoke is made of malleable Iron
  • Buna-N or Teflon can be inserted
  • A flange is Blank or Drilled

Product Information

The cover is supported by a malleable iron yoke with a single brass bolt. The yoke is hinged on one side by a brass pin. It ranges from side to side across the cover. Consequently, when the handwheel is tightened, pressure is circulated evenly across the seating area, declaring a firm, tight closure. Holes in the yoke let the cover be padlocked in the closed position. The bases of the OCECO Manheads are of heavy plate steel construction. They are furnished blank, for welding, or drilled to satisfy customers. Larger sizes and non-standard materials of construction are accessible upon request.

Gauge hatches and venting gauge hatches are available in aluminum, cast iron, carbon steel, and stainless-steel material with customized sizes and materials to suit a wide range of applications manufactured according to API standards.

Venting Guage Hatch

The Gauge hatch can be used to allow pressure relief. This happens according to the specifications of customers. It allows easy access to the storage tank.

Product Information

Construction details are as follows

  • Constructed using Aluminum, Stainless Steel, and other available materials.
  • Sizes are available in various size varieties such that 6″, 8″, 10″, and 12″.

OCECO Gauge Hatches provide a convenient means of gauging, sampling, and obtaining product temperature readings. All OCECO Gauge Hatches are fitted to a composition insert to assure a gas-tight, non-sparking closure. Flange plates are provided blank, for welding, or drilled to match the requirements of the customers.

Product information

Type F-1 Foot Operated Gauge Hatch Specifications,

  • Sizes vary according to the size categories 4, 6, 8, and 10 inch
  • The body is made from Carbon Steel
  • Cover with Cast Iron
  • Insert with Buna-N
  • A lever is made up of Malleable Iron

The OCECO Type F-1 Treadle Type Hatch is designed for use in storage tanks. But the pressures should not exceed 2 oz./sq. inch. These units can be opened by pressing straight down on a malleable iron pedal. It eliminates the clumsiness of a vertical foot pedal. These hatches are self-closing and can be padlocked in a closed position.

Type PF-1 Lockdown Gauge Hatch Specifications are as follows,

  • Sizes vary from 4, 6, 8, 10, to 12 inch
  • The body is made from Carbon Steel
  • Cover with Cast Iron
  • Insert with Buna-N
  • The lever is made of Ductile Iron or Steel

The OCECO Type PF-1 lockdown pressure gauge hatch is constructed to use in storage tanks holding internal pressures from 2 oz. to 15 P.S.I. These are very similar to Type F-1. But the treadle is replaced by a yoke. It is hinged on a brass pin, that ranges from side to side across the cover.

Type FH-1 Gauge Hatch Specifications are as follows,

  • Sizes are 6 and 8 inch
  • The body part is made of the Carbon Steel
  • Cover with Cast Iron
  • Buna-N can be inserted
  • Ductile Iron or Steel lever

The OCECO Type FH-1 is used on storage tanks with a maximum pressure of 2 oz./sq. an inch or less. They are very similar, in design and dimensions, to Type F-1. But these are hand-operated tanks. All OCECO gauge hatches are made up of special materials of construction for corrosive purposes.

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