ISOV Emergency Overspeed Shutoff Valves
About ISOV
The ISOV valve is a positive spring operated air intake shutoff valve that provides emergency overspeed shutdown of a diesel engine. Mechanical failure or the presence of combustible vapors like hydrocarbons in the engine’s intake system may cause the engine to overspeed beyond control, causing severe damage to the engine or even explosion.
Applications
We offer the most comprehensive and diverse line of positive air shutoff valves.
In addition, our installation and activation kits are specifically engineered for your application.
ISOV manufactures engine overspeed shutdown devices for every application, of which some typical are listed below:
Drilling Rigs (Onshore & Offshore)
Drilling Support Equipment
Well Servicing Equipment
Refinery Support Equipment
Bulk Haulers and Tankers
Mining
Construction
Material Handling
Generator Sets
Air Compressors
and many more
Trains
MATERIAL & FINISHING
Based on customer requirements and especially for the OEM market, ISOV castings and internal parts can be manufactured in non standard materials. Todays high temperature inlets and/or challenging climatic contitions may require this.
As an example ISOV castings can be made in stainless steel and even hastelloy if required.
In addition to the above, a variety of surface treatments, such as anodizing and powder coating are available.
CUSTOM FLANGES & ADAPTERS
At ISOV we produce custom flanges to make it compatible to a wide variety of inlet pipings.
We do this for new engines, as well as retrofit in existing engines regardless of make or age.
Typical air inlets can be:
- Hose and Clamp Connection
- O-ring Connection
- Marman Flange
- Elbow and/or Flangebolt Connection
SOLENOIDS
Offshore and Marine Grade Constructions demand special care for electric components.
Solenoids used on ISOV valves are manufactured and tested to DIN VDE0580 and have a plug and socket connection to DIN-175301-803.
This construction ensures safe & reliable operation.
POSITION SWITCH
To monitor the opening and close condition of an ISOV, two types of switches are used, Photoelectric (type D1) and Electromechanical (D2).
D2 type switches are required for Marine and Offshore applications and have an IP65 rating. Alternatively Explosion Proof switches are used for hazardous area applications.
REMCON REMOTE CONTROL
REMCON is an ISOV Valve intended for remote opening and is fitted with either an electric or a pneumatic operator to provide maximum flexibility. Depending on engine intake configuration / piping we offer both a side and a top mounted remote control operator to avoid interference with other engine parts (refer to Ordering Codes on Page 4).
Remote opening of valves is an outcome in applications such as unmanned platforms, remote engine rooms and in arctic conditions. REMCON is also used for large size in which manual opening requires excessive force and / or difficult accessibility. ISOV’s unique Remote Control is designed to fit on bores from 100mm up to 508 mm.
REMCON Electronic controllers developed by ISOV, is a rail mounted Module which can be integrated in any existing control panel.
