Valves
Valve products that have ratings for use in hazardous locations. Includes both valves and transmitters.
MOST POPULAR
QUESTIONS
- Question
- What is the key feature of both Proximity position indicators and level switches that sets these products apart from all competitors?
- Answer
- Magnetic coupling.
- Question
- Hi-Flow™ control valves call out ANSI B16.104 Class IV flow leakage. What does this mean?
- Answer
- ANSI B16.104 is a testing specification for control valves. This specification has actually been superseded by ANSI/FCI 70-2 Class IV. The class IV designation defines the allowable amount of leakage through the valve seat in the closed position. Class IV allows for .01 percent of the rated flow (Cv), to pass through the seat. Class IV is common for metal to metal seated valves.
- Question
- What if I need parts for my Hi-Flow™ control valve?
- Answer
- Many Hi-Flow™ valves have been in service for 15+ years with all original parts. However, since Hi-Flow™ valves are commonly used in steam service, a severe application, some parts may wear over time. Unlike other control valves, Hi-Flow™ valves are designed with removable seat rings making repair or replacement of components an option. Although all parts are available, you will probably never need more than a seat ring, plug assembly, and stem packing to have a valve that is like new.
- Question
- What two basic types of position indication are provided with the Proximity position indicator?
- Answer
- Visual (mechanical) and electrical.
- Question
- How many different size housings does Proximity provide for position indication? How many switches in a single housing?
- Answer
- Two sizes: 2-switch and 4-switch housings.
