31Aug, 2013

Kanur Fire Fighting Truck Tanker

This standard defines the requirements for new automotive fire apparatus and trailers designed to be used under emergency conditions to transport personnel and equipment and to support the suppression of fires and mitigation of other hazardous situations.

Mobile water supply apparatuses.

They bring a source of water to fire scenes that may lack adequate water supply.

Fill & dump rates

The NFPA standard for tankers/tenders states that these apparatus must be capable of being filled at a rate of 1,000 gpm and must be able to be emptied or dumped at the same rate of 1,000 gpm, at a minimum. How can you check your tanker/tender to ensure this kind of performance? Well, it is pretty easy. If you have a 3,000-gpm tanker/tender and a watch, then you just have to time it. If you can fill and dump the apparatus within 3 minutes or less, than you’ve met the standard.

How can you check to make sure that your 3,000-gallon tanker/tender is actually dumping 3,000 gallons of water? First, make sure that the apparatus tank is completely full. Next, take the vehicle and get it weighed. Then dump all the water that you can and weigh the truck again. Water weighs 8.34 pounds per gallon, so if you have a 3,000-gallon tank, then the apparatus must weigh 25,020 pounds less than the initial weight.

Check the weight

With new tanker/tenders, it is extremely important that the apparatus is delivered to you completely empty and with all the equipment and a full tank of fuel. This is when and how to weigh the vehicle. You then need to fill the water tank and weigh it again, and then dump the water tank and weigh it again. Two items you can now check off your delivery acceptance list—that the vehicle is not overweight and that the vehicle is dumping the rated capacity of the tank.

As you are filling and dumping the tank, it is advisable as part of the acceptance testing to time it to make sure that the apparatus can meet the NFPA standard of dumping and loading at a rate of at least 1,000 gpm.

Get what you paid for

Many fire departments are not doing any kind of acceptance testing upon delivery. This is a big mistake. The NFPA standard has acceptance requirements for all kinds of apparatus. If you find that you have a 1,500-gpm pump that, upon delivery, cannot deliver that required flow, then you can send the unit back to the manufacturer and the unit can be fixed under warranty. However, if you wait until the first in-service pump testing, the unit may be out of warranty and the fire department may have to pay for any repairs. The key here is to make sure you are getting what you paid for.

Ball Valve, Segmented Valve, Dome Valve, V Port Ball Valve, Plug Valve

Features

Fill water from Own Pump Install at Fire Truck
Fire Nozzle Spray Max Height 65 M
Transfer Water from Tank to Siamese Connection
Fire Pump 132 Gpm to 500 Gpm
Pump Supply Power Diesel Engine Single, Twin, Direct Injection Diesel Fuell, and Hydraulic Oil Motor
Tank Material Carbon Steel, Stainless Steel, Alumunium, and Other
Nozzle Type Spray Patterns, Straight, Etc
Manual Controller and Automatic Controller
Single cabin , Double cabin, Etc
SLOSHING Baffle Tank Simulation
Foam System Integration
Antistatic device and anti blow-out Pressure
Valve, Safety Valve, Stop Valve, Landing Valve, Quick Connect Etc

Default Width dan Height di Tag Marquee Ball Valve Slotted port Ball Valve Segemnted Ball Valve Steinless Ball Valve A105 Ball Valve Wafer Ball Valve Shutdown Valve Control Valve Dome Valve V Port Ball Valve A Port Ball Valve Floating Ball Valve Trunnion Ball Valve Double Bleed and Block Ball Valve Alloy Steel Ball Valve Carbon Steel Ball Valve Pneumatic Ball Valve Electric Ball Valve Elektrik Ball Valve mini ball Valve PVC Ball Valve CPVC Ball Valve 3 way Ball Valve Hydraulic Ball Valve High Pressure Ball Valve Compression Ball Valve Clean Steam Ball Valve 2 Piece Body Ball Valve 3 piece Body Ball Valve Sanitary Ball Valve PTFE Lined Ball Valve Lined Ball Valve Plug Valve Side Entry Ball Valve full Bore Ball Valve Reduce Bore Ball Valve ANSI Ball Valve JIS Ball Valve Hastelloy Valve REFRIGERATON BALL VALVE Piston Valve Plug Valve Segmented Valve Dome Valve Safety Valve Relief Valve Cryogenic Ball Valve ZoeLL Hinsong neway FMC Toyo FLV Kitz Armaturen Bray concord End Armaturen Cameron Toyo OMB Asahi KVC TOA Gemu OMB Singer Hancock Persta Fisher Crane Emerson Flowserve Shoritsu Zetkama Ayvaz KSB Tomoe Velan Pistek Valve WORCESTER Batusan Ari Faba Ari Armaturen Ebro Coax IMI CCI CCI IMI Samshin Valve Shamsin Valve Samshin Valve.co.kr Dongsan Valve

Gate valve (also referred to as a wedge or slide valve) is a device that fully opens and fully closes to start and stop flow.

Gate valves are used to shut off the flow of liquids rather than for flow regulation. When fully open, the typical gate valve has no obstruction in the flow path, resulting in very low Flow Resistance.

The size of the open flow path generally varies in a nonlinear manner as the gate is moved. This means that the flow rate does not change evenly with stem travel. Depending on the construction, a partially open gate can vibrate from the fluid flow.

Gate valves are mostly used with larger pipe diameters (from 2″ to the largest pipelines) since they are less complex to construct than other types of valves in large sizes.

At high pressures, friction can become a problem. As the gate is pushed against its guiding rail by the pressure of the medium, it becomes harder to operate the valve. Large gate valves are sometimes fitted with a bypass controlled by a smaller valve to be able to reduce the pressure before operating the gate valve itself.

Gate valves without an extra sealing ring on the gate or the seat are used in applications where minor leaking of the valve is not an issue, such as heating circuits or sewer pipes.

Valve construction

Common gate valves are actuated by a threaded stem that connects the actuator (e.g. handwheel or motor) to the gate. They are characterised as having either a rising or a nonrising stem, depending on which end of the stem is threaded. Rising stems are fixed to the gate and rise and lower together as the valve is operated, providing a visual indication of valve position. The actuator is attached to a nut that is rotated around the threaded stem to move it. Nonrising stem valves are fixed to, and rotate with, the actuator, and are threaded into the gate. They may have a pointer threaded onto the stem to indicate valve position, since the gate’s motion is concealed inside the valve. Nonrising stems are used where vertical space is limited.

Gate valves may have flanged ends drilled according to pipeline-compatible flange dimensional standards.

Gate valves are typically constructed from cast iron, cast carbon steel, ductile iron, gunmetal, stainless steel, alloy steels, and forged steels.

All-metal gate valves are used in ultra-high vacuum chambers to isolate regions of the chamber.