Premier Petroleum Supplier

Valves

We will work closely with you to define your valve needs and specify the product to meet those needs.

Use the list below as a guide to some of the many factors you will need to consider in making an important valve or actuator purchase. Knowing these criteria will help the manufacturer or its distributor design and/or select the best valve for your particular application.

Application

Media being handled, e.g., liquid, gas, slurry, or solid.
Corrosiveness of media, e.g., PH, concentration.
Corrosiveness of atmosphere.
Flow (velocity, capacity, direction).
Pipe size.
Media temperature (maximum to minimum).
Pressure: maximum operating pressure; maximum differential pressure.
Operation: e.g., manual/automatic, on-off throttling.
Installation constraints.
Envelope dimensions.
Weight.
Accessibility.
Conformance to appropriate standards, e.g., API, AWWA, ANSI, FM, UL, OSHA, etc.
Tightness of shutoff required.

Valve Requirements

Type of valve, e.g., ball, butterfly, gate, check, control, globe, plug, relief, regulator, pinch, diaphragm, etc.
Valve size.
End connections, e.g., screwed, ranged/lugged, wafer, butt-weld, mechanical joint, etc.
Materials of construction, e.g., carbon steel, resins, steel or other alloys, cast iron, etc.
Body.
Trim.
Seats.
Bolting.
Frequency of operation.
Packing.
Special requirements, e.g., testing, tagging, coating.

Valve Actuation

Type, e.g., manual, electric, pneumatic, hydraulic Type, e.g., manual, electric, pneumatic, hydraulic.
Motion required.
Rotary, e.g., quarter-turn, multi-turn.
Linear.
Mode of operation.
Double acting.
Spring return: spring-to-closed, spring-to-open.
Required valve operating thruster torque.
Power supply, e.g., voltage, available air supply.
On/off, throttling, or proportional control.
Corrosive resistance: materials, coating, tubing.
Speed of operation.
Frequency of operation.
Special requirements, e.g., togging, testing.
Accessories, e.g., limit switches, positioner, solenoid valve, transducers, manual override.