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Framo

Cargo Manifold DN300 chemical

Cargo Manifold Valve · Tanker Cargo Systems

Class-certified type (DNV register) · technical data sheet not yet verified​‌‌⁠​​​‌⁠​‌‌​​​⁠⁠‍‌‍
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Framo Cargo Manifold DN300 chemical — Tanker Cargo Systems.

Specifications

Technical data.reference — unverified

Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.

Flow Rate (m³/h)0
Head (m)0
Cargo Typechemical
MaterialSS316
Inspection

Inspector Detail

Common issues

  • Valve seat/seal degradation from aggressive chemical cargoes, causing leakage past the disc
  • Actuator (air-operated or hydraulic) seal wear leading to slow or incomplete closure
  • Stem packing leaks at the gland after repeated high-viscosity cargo transfers
  • Galling or seizing of stainless disc/seat surfaces on infrequently operated valves
  • Corrosion or pitting at manifold flange faces and reducers exposed to deck weather
  • Position indicator or limit switch misalignment giving false open/closed signals
  • Gasket failure at manifold flange connections during hose/loading arm connection

Inspection checklist

  • Visual check for external leakage at stem gland and body-bonnet joint
  • Full open/close function test, confirming indicator agrees with actual disc position
  • Inspect disc/seat sealing surfaces for scoring, pitting or chemical attack at scheduled overhaul
  • Check manifold flange bolt torque and gasket condition
  • Inspect actuator air/hydraulic supply lines for leaks and correct operating pressure
  • Confirm reducers, blank flanges and drip trays are present and serviceable
  • Check earthing/bonding continuity across the manifold connection
  • Verify wetted-part material marking (e.g. SS316) still matches the cargo compatibility list

Service intervals

Valve function test (full stroke)before each cargo operation
Actuator seal/packing inspectionannually or per maker's manual
Internal disc/seat overhaultypically every 2.5-5 years depending on cargo aggressiveness
Manifold gasket renewalat each hose/arm connection or per condition
Position indicator/limit switch calibrationannually

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Typical wear limits

Stem/gland packingrenew when leakage cannot be stopped by gland adjustment - no universal numeric limit, follow maker's manual
Disc/seat sealing surfacereject on visible scoring, pitting or loss of flatness that prevents tight shut-off - confirm against maker's tolerance

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Stem seal/packing set
  • Body-bonnet gasket
  • Disc seat ring / seat insert
  • Actuator repair kit (seals, diaphragm)
  • Manifold blank flange and gasket set
  • Position indicator switch

Safety

  • Chemical cargo exposure during valve maintenance - check cargo compatibility data and wear correct PPE before opening
  • Residual cargo or vapour trapped in the valve body - purge and gas-free before dismantling
  • Pressurised actuator (air-operated or hydraulic) stored energy - isolate and vent before servicing
  • Static discharge risk during cargo transfer - confirm bonding/earthing before connecting hoses

Class survey

Cargo manifold valves fall under the survey of tanker cargo systems; class typically expects records of valve function tests, hose/arm connection checks and leak-free operation evidence at Enhanced Survey. Chemical tanker manifolds additionally require cargo compatibility documentation for the wetted materials.

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