| top of FAQ |
| ? | How do I get a hard copy of your catalog? |
| A | You have two ways of obtaining a hard copy of our catalog.
First, you may contact our Regional Sales Offices or the local Sales Agent or Factory Sales Representative responsible for where you are located. They can show you in person the latest in control valve technology from Cla-Val and answer any questions you may have on applications or sizing. On Cla-Val homepage GO to "Sales Offices" and look for the closest Cla-Val Regional Sales Office with an 800 number to set up an appointment.
Second, you can download needed catalog pages from this web site using Acrobat Reader. On Cla-Val homepage GO to "Electronic Catalog" (you will have to register for your first visit), enter your e-mail address and click on "View Catalog." Then click on "Engineering Data Sheets." Select desired valve function and then catalog number. The valve data sheet will in PDF file for easy printing. |
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| ? | How do I get a hard copy of your catalog? |
| A | You have two ways of obtaining a hard copy of our catalog.
First, you may contact our Regional Sales Offices or the local Sales Agent or Factory Sales Representative responsible for where you are located. They can show you in person the latest in control valve technology from Cla-Val and answer any questions you may have on applications or sizing. On Cla-Val homepage GO to "Sales Offices" and look for the closest Cla-Val Regional Sales Office with an 800 number to set up an appointment.
Second, you can download needed catalog pages from this web site using Acrobat Reader. On Cla-Val homepage GO to "Electronic Catalog" (you will have to register for your first visit), enter your e-mail address and click on "View Catalog." Then click on "Engineering Data Sheets." Select desired valve function and then catalog number. The valve data sheet will in PDF file for easy printing. |
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| top of FAQ |
| ? | What does the 600 mean in the catalog number? |
| A | The 600 Series catalog numbers are our way of indicating the use of a different main valve. Notice that for each catalog data sheet there are two valves that share the same valve function. The primary difference between the two main valves is their relative capacity. The original Hytrol main valve is a full port design with inlet, outlet and seat flow areas all the same. The 600 Series Hytrol main valve, using standard parts, has a reduced size seat flow area relative to the inlet and outlet. The 600 Series Hytrol allows for better flow characteristics and greatly improved cavitation resistance. |
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| ? | What is the difference between the two pilot system strainer options?
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| A | The 'A' or 'Y' strainers provide pilot system protection from debris that may cause the valve to not operate. The 'A' option is the X46 Flow Clean Strainer. This strainer is designed as a virtually maintenance free strainer that is cleaned by the fluid flowing through the valve body. The 'Y' option is our X43 Y Strainer. This is an external Y strainer that does require regular cleaning. Both of these strainers have 40 mesh screens. Desired option is to be shown on order specifications.
Some valves have a pilot system strainer included. For example, the 50-01 Pressure Relief Valve uses the X42N-2 Strainer and Needle Valve Assembly.
For applications with unusually high solids content fluid, we offer a variety of specialty strainers and filters. Please consult with your Cla-Val factory sales representative for more information.
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| ? | What does the 600 mean in the catalog number? |
| A | The 600 Series catalog numbers are our way of indicating the use of a different main valve. Notice that for each catalog data sheet there are two valves that share the same valve function. The primary difference between the two main valves is their relative capacity. The original Hytrol main valve is a full port design with inlet, outlet and seat flow areas all the same. The 600 Series Hytrol main valve, using standard parts, has a reduced size seat flow area relative to the inlet and outlet. The 600 Series Hytrol allows for better flow characteristics and greatly improved cavitation resistance. |
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| ? | What is the difference between the two pilot system strainer options?
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| A | The 'A' or 'Y' strainers provide pilot system protection from debris that may cause the valve to not operate. The 'A' option is the X46 Flow Clean Strainer. This strainer is designed as a virtually maintenance free strainer that is cleaned by the fluid flowing through the valve body. The 'Y' option is our X43 Y Strainer. This is an external Y strainer that does require regular cleaning. Both of these strainers have 40 mesh screens. Desired option is to be shown on order specifications.
Some valves have a pilot system strainer included. For example, the 50-01 Pressure Relief Valve uses the X42N-2 Strainer and Needle Valve Assembly.
For applications with unusually high solids content fluid, we offer a variety of specialty strainers and filters. Please consult with your Cla-Val factory sales representative for more information.
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| top of FAQ |
| ? | How can I get more operation and maintenance information on my existing valve? |
| A | All new Cla-Val Automatic Control Valves are shipped with a Technical Manual that contains information on Installation, Operation and Maintenance for the valve. This manual is based on the valve catalog number.
End-users can arrange for a replacement Technical Manual to be sent to them by mail. A new single copy can be obtained by contacting the nearest Cla-Val Regional Sales Office. On Cla-Val homepage GO to "Sales Offices" and look for the closest Cla-Val Regional Sales Office with an 800 number.
We must have all of the nameplate data, including: 1.) Valve size, 2.) Valve catalog number, 3.) Valve part number, and 4.) Valve Code (two letters). The nameplate is found on top of the inlet flange of 2 1/2" and larger valves and on the body side of 2" and smaller valves. |
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| ? | How can I get more operation and maintenance information on my existing valve? |
| A | All new Cla-Val Automatic Control Valves are shipped with a Technical Manual that contains information on Installation, Operation and Maintenance for the valve. This manual is based on the valve catalog number.
End-users can arrange for a replacement Technical Manual to be sent to them by mail. A new single copy can be obtained by contacting the nearest Cla-Val Regional Sales Office. On Cla-Val homepage GO to "Sales Offices" and look for the closest Cla-Val Regional Sales Office with an 800 number.
We must have all of the nameplate data, including: 1.) Valve size, 2.) Valve catalog number, 3.) Valve part number, and 4.) Valve Code (two letters). The nameplate is found on top of the inlet flange of 2 1/2" and larger valves and on the body side of 2" and smaller valves. |
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| top of FAQ |
| ? | What are the differences between "normal" flow, "reverse" flow, "two-way" flow and "return" flow options? |
| A | The Hytrol main valve is a two-way flow modified globe pattern valve. Flow direction is described relative to the valve seat. Pilot system orientation and operation of the Hytrol valve remains the same regardless of the flow orientation of the main valve.
Normal flow refers to the main valve in "normal" flow. Normal flow through the main valve is described as "up and over the seat". When valve is closing it is against the flow and the forces are considered balanced. When the main valve diaphragm wears out, the diaphragm assembly will go to the open position ("fail open"). This main valve orientation is standard for water applications.
Reverse flow refers to the main valve in "reverse". Reverse flow through the main valve is described as "over the seat and down". When valve is closing it is with the flow and the forces are considered unbalanced. When the main valve diaphragm wears out, the diaphragm assembly will go to the closed position ("fail closed"). This main valve option is primarily used with fueling valve applications and check valves.
Two-way flow consists of components in the pilot system, which allow the valve to control in both directions of flow through the main valve. Pilot controls can be different or the same in each flow direction.
Return flow consists of components in the pilot system, which allow the valve to open whenever the inlet pressure is less than the outlet pressure. Initially, the valve will be very slightly open at initial shift in pressure differential and will gradually go more open as the differential increases. This function overrides all other functions in pilot system. Components are same as check feature.
Altitude valves use the term "two-way" flow for applications where tank filling and discharge go through the same valve. The discharge flow from the tank often is referred to as "return" flow. |
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| ? | What are the differences between "normal" flow, "reverse" flow, "two-way" flow and "return" flow options? |
| A | The Hytrol main valve is a two-way flow modified globe pattern valve. Flow direction is described relative to the valve seat. Pilot system orientation and operation of the Hytrol valve remains the same regardless of the flow orientation of the main valve.
Normal flow refers to the main valve in "normal" flow. Normal flow through the main valve is described as "up and over the seat". When valve is closing it is against the flow and the forces are considered balanced. When the main valve diaphragm wears out, the diaphragm assembly will go to the open position ("fail open"). This main valve orientation is standard for water applications.
Reverse flow refers to the main valve in "reverse". Reverse flow through the main valve is described as "over the seat and down". When valve is closing it is with the flow and the forces are considered unbalanced. When the main valve diaphragm wears out, the diaphragm assembly will go to the closed position ("fail closed"). This main valve option is primarily used with fueling valve applications and check valves.
Two-way flow consists of components in the pilot system, which allow the valve to control in both directions of flow through the main valve. Pilot controls can be different or the same in each flow direction.
Return flow consists of components in the pilot system, which allow the valve to open whenever the inlet pressure is less than the outlet pressure. Initially, the valve will be very slightly open at initial shift in pressure differential and will gradually go more open as the differential increases. This function overrides all other functions in pilot system. Components are same as check feature.
Altitude valves use the term "two-way" flow for applications where tank filling and discharge go through the same valve. The discharge flow from the tank often is referred to as "return" flow. |
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