Table of Contents
Do I need to take apart a ball valve prior to soldering?
Take valves apart before soldering To keep the heat from damaging the rubber or plastic parts inside, disassemble valves before soldering. Luckily, ball valves are not easily damaged by heat. Just be sure to open the valve and concentrate the heat at the fitting ends of the valve body.
Do you solder a ball valve open or closed?
Soldering a ball valve can be done both open or closed. But experts suggest soldering ball valves in the closed position. It’s safe and there’s less chance of damaging any part. You can solder it open as well.
How much heat can a ball valve handle?
The ball valve’s ease of operation, repair, and versatility lend it to extensive industrial use, supporting pressures up to 1,000 bar (100 MPa; 15,000 psi) and temperatures up to 752 °F (400 °C), depending on design and materials used.
Does it matter which way you install a ball valve?
VALVE ORIENTATION: Ball valves may be installed in vertical or horizontal pipe runs, they are bi-directional therefore flow direction is not critical, however the best practice is to set up the valve handle to point in the direction of flow whenever possible.
Why does my solder ball up?
When soldering silver and using hard or soft solder, I often find the solder balls up – it just refuses to jump no matter how long it’s under the flame. This is because the flux has burnt out and there is no medium through which the solder will jump (or run as some would say).
What position should a gate valve be in to be soldered?
Apply a layer of flux with the help of a brush on the two pipe ends and inside the ball valve also. Place the ball valve in between the cut ends of the pipe, According to the manufacture’s guidelines, keep the ball valve in the open or closed position during soldering. Apply heat to the pipe and ball valve area.
Can a ball valve be lubricated?
The ball and handle might require lubrication if the valve becomes difficult to turn. It’s easiest to lubricate the ball valve before gluing it to the connecting PVC pipes, but you can still lubricate it even after installation.
Do ball valves need lubrication?
They’re called ball valves because they use a solid ball with a hole through its middle to control the flow. Ball valves are not very high maintenance parts. Other than worn O rings that seal the ball inside the valve body, keeping the valve clean and free-turning with a little lubrication is all it needs.
What type of grease for valve stems?
Because it employs a special silicone compound, VSG-77 is the most stable lubricant available on the market today. This grease-like paste is the lubricant of choice for valves of all varieties, including: ball valves, plug valves, butterfly valves, automated valves, gate valves, and also rubber and plastic O-rings.
What is a globe valve?
A globe valve regulates flow in a pipeline. It is used to control or stop the flow of liquid or gas through a pipe. Globe valves are named for their spherical body shape with the two halves of the body being separated by an internal baffle. Globe valves are also known as throttle valves.
What is the difference between globe valve and ball valve?
The main difference between these two types is the way they close. A globe valve uses a plug (stem) that closes against the flow, and a ball valve has a gate (ball) that closes across the flow. Globe valves are good for regulating flow, whereas ball valves are better for on/off control without pressure drop.
What is full bore ball valve?
Full bore ball valves have an oversized ball so that the hole in the ball is the same size as the pipe internal diameter which ensures straight-through flow and positive shut off with minimal pressure drop and very little resistance to the flow of liquid.
How do you sweat brass fittings?
Unroll a coil of lead-free solder and touch the tip to the joint as soon as you remove the heat. Move the solder completely around the pipe as it melts and seeps into the joint. Work quickly. The metal stays hot enough to melt solder only for a few seconds.
Can you solder bronze to copper?
If the proper procedures are followed, especially in the preheating and heating process, consistent, high-quality solder joints can easily be achieved between copper tube and new, no-lead copper alloy (brass or bronze) fittings/components.
Why do ball valves fail?
A variety of factors can contribute to ball valve failure including poor design (chemical compatibility, rated pressure/flow rate, etc.), faulty installation, and/or improper operation. Guidelines are available in literature to properly design a ball valve.
What does lf mean on a ball valve?
A LF for Lead Free. The size of the ball valve.
Can you reverse ball valve handle?
Use this bronze ball valve on less corrosive materials such as oil, air, or non-treated water. This valve features a reverse handle operated ball. It works opposite of a normal ball valve. When the handle is parallel with the pipe, it is closed and when it is perpendicular, the valve will be open.
