TABLE OF CONTENTS:

1. Editorial
2. Staff News
3. Product News
4. Special Feature
5. On a lighter note

1. Editorial

Hello everyone.  Here we are again, staring Christmas in the face just a few short months since last Christmas (at least it only feels like a few months).

We have a few customers that are saving themselves time and money by ordering their spare parts online.  Still alot of customers ringing direct rather than using the website, as much as we love to chat, it would be fabulous if we could get all the spare parts sales going straight through the website.  If you need help to set your computer up to shop quickly and easily, please give me a call and I will either talk you through it or come to your office and set it up for you.

 

Give me a call or drop me an email at taniah@tidalfluidpower.com.au and I can set you up with your unique online username and password immediately, that way you can start shopping straight away.

2. Staff News

The Christmas holidays are very exciting for some and not so for others.

Jeremy and his girlfriend, Kate are heading to the Cook Islands for a little break.   It looks to me like Santa knows exactly where to go for this years gift delivery.

Image result for tahiti is nice this time of year

Steve and Dawn are heading down to NSW to spend time with family and take a little break.

Danny has watched too many reno shows and will be spending the break renovating his own property!

Damo will be spending some quality time with his family enjoying some lovely local outings.. a lot of theme parks are on the cards I believe, where his little girl has been selected to personally help Santa on his delivery (ssshhhhh…..that’s secret Santa business)

I’m on house arrest until my “big” trip in July, so no plans for me!  If you need to contact me I’ll be lolling around the pool with a book in one hand and a rum and coke in the other!

Seriously though, if you  do find that you need something over the Christmas period just pick up the phone and give us a call.  Danny will be on call the entire time so we can ship anything that is in stock same day.

 

3.Product News

A lot of our customers appear to be unaware that we have a large range of valves ex stock.  We have Diverter valves, Manifold Valves, Check Valves, Pressure Relief Valves and Sectional Valves.

Diverter Valve

The stackable circuit selector valves, type MOP.06.6 allows one single supply with up to 5 valves connected together. As they are controlled from high performance solenoids, they do not require external drainage.

These valves can manage high hydraulic powers with a minimal pressure drop.  To get more information on this product, head to our web page

http://tidalfluidpower.com.au/product/mop-06-6-single-6-port-diverter-valve/

 

The stackable circuit selector valves, type SVK-10 allows one single supply with up to 4 valves connected together.  As they are controlled from high performance solenoids, they do not require external drainage.

These valves can manage high hydraulic powers with a minimal pressure drop.

http://tidalfluidpower.com.au/product/svk-10-single-6-port-diverter-valve/

 

The dual selector valve type 2KVH-06-8 allows one single supply with 2 selector valves built into one cast body.  As they are controlled from high performance solenoids, they do not require external drainage.

These valves can manage high hydraulic powers with a minimal pressure drop.  To get more information on this product, head to our web page

http://tidalfluidpower.com.au/product/2kvh-06-double-6-port/

 

4. Special Feature

Hydraulic Symbols Tutorial

If you are a little like me and are wondering what all the little hieroglyphics that keep popping up all over the place actually mean.. I came across this great little symbol dictionary I thought I would share with you.


Fluid Power Symbols

Symbol, Tank Hydraulic Tank (fluid reservoir)

All hydraulic systems must have some form of a reservoir to hold the fluid in the system. Most systems have vented tanks, however aircraft are one application where a closed tank is appropriate. The symbol shown here is a vented tank, a box with the line in the center would indicate a closed system. The line could also not go to the bottom of the tank, that would mean that the line stops above the fluid level in the tank and the fluid falls in. It is better to stop the line below the fluid level, otherwise the falling fluid may cause bubbles in the fluid.


Symbol, Pump Hydraulic Pump

A pump displaces fluid which creates flow. There are fixed displacement pumps and variable displacement pumps. The pump symbol is very similar to a hydraulic motor symbol, the difference is that the pump has the small triangle pointing out and a motor has the small triangle pointing in to the center. An angled arrow typically indicates that a device is variable, thus this is a variable volume pump. Fixed displacement pumps provide the same output volume with the same input RPM. Variable displacement pumps can change the output volume while maintaining the same input RPM. Hydraulic pumps are precision components and have very close tolerances, they must be treated with care.


Symbol, Line Hydraulic Line

Hydraulic lines carry the fluid from the pump throughout the system. There are two basic types, rigid and flexible. Rigid lines are used to connect items that will not move in relation to each other. Manifolds connected with rigid lines are the most reliable transfer method. The dots at the end of the line show a connection point, if two lines cross and this dot isn’t shown then the lines are not connected.


Symbol, Flex line Hydraulic Hose (flexible line)

A flexible line is used to carry fluid to items that have a lot of vibration or movement in relation to each other. Some examples where flexible lines are used, the pump unit (vibration) or blades on a tractor, due to the movement.


Symbol, Relief valve Pressure Relief Valve

Hydraulic fluid is virtually non compressible, if the fluid can’t go anywhere the pump will stall, and damage to the pump and motor can result. All hydraulic systems must have a pressure relief valve in line with the pump. The pressure relief will drain into the tank. The dashed line indicates a pilot line, this is a small line that only flows enough fluid to control other valves. The pressure of this pilot line acts against the spring on the other side of this valve. When the pilot pressure exceeds the spring force then the valve spool shifts over and opens the valve, this allows flow to the tank. This causes a drop in the pressure on the pump side, which also reduces the pilot pressure. When the pilot pressure is less than the spring force the spring closes the valve. The relief valve in the position described above will control the maximum pressure in the hydraulic system.


Directional Valves

A directional valve will control which device the fluid will flow to. These valves are the primary devices used to sequence the motion of equipment. There are many different types of directional control valves. The valve is generally specified by number of positions and number of ways (ports). The valve is made up of two parts, the body and the spool. When valves shift the spool is moved in relation to the body, this opens and closes passages that the fluid flows through. Remember that the valve actuator always pushes the spool, this will help you read the drawings. You read the operation of a valve in a circuit in the following manner. The box(s) with arrows in it show the flow of fluid when the valve is shifted. The box without arrows and/or away from the actuator shows the flow, if any, in the neutral position. This is also the box you use to count the number of ports the valve has.

Symbol, Two position Valve Two(2) Position, Two(2) way

This valve has two positions (2 boxes) and 2 ways (ports); thus 2 position, 2 way. It is shown with a manual actuator (on the right) and has a spring return to neutral. This valve is called normally closed because both ports are blocked when in neutral. It could be used on a safety device like a safety gate, if the gate isn’t closed, actuating the valve, then the flow will be stopped, preventing movement of the connected device.


Symbol, Three position, 4 way valve Three(3) Position, Four(4) way

This valve has three positions (3 boxes) and 4 ways (ports); thus 3 position, 4 way. It is shown with a closed center, when the valve is neutral all ports are blocked. The small boxes on each end with diagonal lines through them, C1 and C2, are electrical coils, this is an electrically actuated valve. The port marked P is Pressure and the port marked T drains to tank. The ports marked A and B connect to an external device, like a cylinder. When C1 is energized the valve will shift, putting pressure to the B port and draining the A port to the tank. Likewise when C2 is energized the pressure port connects to the A port and the B port drains to the tank.


Symbol, Three position, 4 way valve Three(3) Position, Four(4) Way

This valve has three positions (3 boxes) and 4 ways (ports); thus 3 position, 4 way. It also is electrically actuated. The jagged lines next to the coil indicates springs, when the coil is de-energized the opposite spring will force the spool back to the center position. This valve also drains to tank when in neutral, this is a standard valve on molding machines. They drain to tank when de-energized for safety.


Symbol, Cylinder Cylinder

A cylinder is one of the devices that creates movement. When pressure is applied to a port it causes that side of the cylinder to fill with fluid. If the fluid pressure and area of the cylinder are greater than the load that is attached then the load will move. Cylinders are generally specified by bore and stroke, they can also have options like cushions installed. Cushions slow down the cylinder at the end of the stroke to prevent slamming. If the pressure remains constant a larger diameter cylinder will provide more force because it has more surface area for the pressure to act on.


Complete circuit
A Complete Circuit

 

 5.  On a lighter note

 

All of us here at Tidal Fluid Power wish you an amaaaazing Christmas and a fabulous New Year and we look forward to 2017.

HAVE FUN EVERYONE and we’ll see you all in the New Year!!