Danfoss SVA 80 Overhaul Kit (148B6155)

Danfoss SVA 80 Overhaul Kit (148B6155) – Technical & Maintenance Guide

The Danfoss SVA 80 Overhaul Kit (MPN: 148B6155) is a factory-engineered maintenance assembly designed specifically for restoring the sealing integrity and mechanical performance of Danfoss DN 80 (3-inch) SVA-series stop and shut-off valves. In marine and heavy industrial refrigeration plants operating under severe vibration and continuous thermal stress, internal valve components—particularly the valve cone, internal gaskets, and packing glands—experience wear that leads to passing or external refrigerant leakage. This overhaul kit provides all essential replacement elements required to bring the valve back to original manufacturer tolerances without needing to cut or dismantle the main valve housing from the pipeline.

Compatibility

• Compatible Valve Models: SVA-S 80 (Standard Angle/Globe), SVA-ST 80, SVA-LT 80 (Long Temperature), and SVA-HS 80.
• Connection Sizes: Fits DN 80 (3″) housings regardless of connection type (BW Butt-weld, SOC Socket weld, or threaded variants).
• Condition: New

Key Features

1. Precision-Fit Cone: Engineered with exact seating geometry to guarantee bubble-tight shut-off and minimize wire-drawing or seat erosion under high-velocity flow.
2. Robust Packing Gland: High-integrity packing assembly prevents stem leakage, specially formulated to withstand extreme temperature cycling between -60°C and 150°C.
3. In-Line Serviceability: Allows complete overhaul of internal wear parts by simply removing the bonnet assembly, eliminating the need to cut or de-weld the valve body from the steel pipeline.
4. Vibration Resistance: Designed to withstand heavy system pulses and mechanical vibrations commonly found in marine compressor discharge lines.

Applications

• Marine provision plants and cargo hold refrigeration systems
• Centralized industrial cold storage and freezing facilities
• Chemical and petrochemical process cooling loops
• Shipboard air conditioning chillers and victualling plants

Frequently Asked Questions

What components are included inside the Danfoss 148B6155 overhaul kit?

The kit contains a replacement valve cone, packing gland assembly, internal gaskets, and specialized sealing elements required to rebuild the top part of a Danfoss SVA 80 shut-off valve.

Can this overhaul kit be used on both angle and globe versions of the SVA 80?

Yes. The internal working components (cone and bonnet parts) governed by this kit are identical for both angle (A) and globe (G) configurations of the same nominal size DN 80.

Is it necessary to cut the valve body out of the pipe to install this kit?

No. The modular design of Danfoss SVL Flexline valves allows you to unbolt the top bonnet assembly and replace all internal wearing parts without disturbing the welded valve housing.

What is the shelf life of the rubber and PTFE seals in this kit?

When stored in a cool, dry environment away from direct sunlight and UV radiation, the OEM sealing materials maintain their physical properties for over 10 years.