What is a chain valve?
A chain operator is designed to be used for operating a valve in an overhead location. The chain operator attaches to a valve handwheel and a looped chain is fed thru one side of the operator and out the other. By pulling on the chain, the valve handle is turned to either open or close the valve.
What are chain wheels?
n. 1. ( Mechanical Engineering) engineering a toothed wheel that meshes with a roller chain to transmit motion.
What does derailleur mean?
Definition of derailleur : a mechanism for shifting gears on a bicycle that operates by moving the chain from one set of exposed gears to another.
What is a derailleur on a bicycle?
The rear derailleur is the mechanism that shifts the chain at the rear sprockets. There are many different models but they all share the same basic design and functionality. Derailleurs are secured to the bike with a mounting bolt to the frame’s derailleur hanger. The upper pulley guides the chain to the sprockets.
What is a derailleur guard?
The Rear Derailleur Guard is designed to protect the bicycle’s rear derailleur and hanger from damage when transporting the bike in a car, shipping in a box or bike case, or while in storage.
Can I put any derailleur on my bike?
A derailleur for your mountain bike should match the specifications on the original derailleur. That is, while it doesn’t need to be the same model of derailleur, it does need to be the same brand, in almost every case. It also needs to match the number of gears, or have more intended.
Can you mix front and rear derailleur?
The only two ways the front derailer and rear derailer must be compatible are 1) they must be assuming the same chain width (or at least reasonably close), and 2) they must combine to produce a reasonable chainline (more a function of the crankset than the front derailer).
Are all API 600 valves full port?
The valve weight and cost can be double or triple. For cast valves per API 600, the minimum port allowed is considered to be full port. Note that ‘full port’ really means ‘considered as full port for flow calculations’.
How do chainwheels attach to valves?
Chainwheels easily attach to the hand wheel of valves ranging from 2”-36” in diameter. Solid Hub chainwheels control overhead valves by mounting directly to the valve or gear operator stem which eliminates the need for valve hand wheels.
Why choose the Bray chainwheel manual valve operator?
The Bray Chainwheel Manual Valve Operator offers safe, reliable manual operation of valves in high, difficult to reach locations.
What is a chain bar?
The Chain Bar is designed to manually actuate any quarter turn valve, such as plug, ball, and butterfly valve, from the floor that is in a hard-to-reach location. It replaces the handle on a quarter Standard Chainwheels are our most economical model for operating valves in high, normally out of reach locations. Chainwheels eas…
What is a standard chainwheel?
Standard Chainwheels are our most economical model for operating valves in high, normally out of reach locations. Chainwheels eas… Solid Hub chainwheels control overhead valves by mounting directly to the valve or gear operator stem which eliminates the need fo…