Technical Resources

CPV Manufacturing provides valves technical documents, tables, and resources to help assist our customers with field maintenance and in support of design and piping installations. If you have questions or comments, please contact us and we will be happy to assist you with your needs.

Product Torque Values

Torque Values for Bonnets & Gland Nuts of G-Series® Valves

The following torque values should be used for assembling the valves given. The values shown are for dry assembly. If lubrication is used on the threads, it is recommended that torques closer to the minimum be used. The minimum values establish the lower limit for permanent assembly. Torque values below the minimum should not be […]

Torque Values for Bonnets of Mark VIII® Shutoff & Regulating Valves

The following torque values are to be used for assembling the valves given. The values shown are for dry assembly. If lubrication is used on the threads, it is recommended that torques closer to the minimum be used. The minimum values establish the lower limit for permanent assembly. Torque values below the minimum should not […]

Torque Values for Bonnets, Gland Nuts and Stem Retainers of O-SEAL® Hand Valves

The following torque values are to be used for assembling the valves given. The values shown are for dry assembly. If lubrication is used on the threads, it is recommended that torques closer to the minimum be used. The minimum values establish the lower limit for permanent assembly. Torque values below the minimum should not […]

Operating Torque Values for O-SEAL® & G-Series® Hand Valves

The table below is a list of the Maximum torques which may be encountered. Most generally the actual operating torques are 10 to 20% less than these figures depending upon the fluid flowing through the valve, the stem lubrication, and the condition of the seat. For operating pressures less than 6000 PSI the torque values […]

Operating Torque Values for Seating of Mark VIII® Shutoff and Regulating Valves

The table below is a list of the Maximum torques which may be encountered. Most generally the actual operating torques are 10 to 20% less than these figures depending upon the fluid flowing through the valve, the stem lubrication, and the condition of the seat. For operating pressures less than 3000 PSI the torque values […]

Soft Goods Replacement Maintenance

Stem Seal Replacement Bulletin

Every new CPV O-SEAL® valve provides leak-proof assurance to up 6000 PSI (413 bar). Properly maintained they should provide long, reliable service. The stem seals are made of Viton®, Polyurethane, Ethylene Propylene, etc. and should be inspected at appropriate intervals depending on system conditions and frequency of use. To maintain CPV’s leak-proof standard after stem […]

Soft Goods Kit for O-SEAL® Series Valves

In the event that the sealing elements used in an O-SEAL® system valve ever need replacement, a soft goods kit can be obtained containing all four of the items required. To order a soft goods kit, determine the proper material grouping shown across the top of the chart below. Read down the column and select […]

Valve Maintenance

Valve Spacers

CPV Valve Spacers are the exact face-to-face dimension of CPV O-SEAL® valves. They can be used to protect valves during installation, and can be reused again and again for maintenance operations. CPV O-SEAL® valves provide years of reliable service. However, the heat of welding or brazing during installation can compromise the cleanliness and/or integrity of […]

Valve Lubrication

A smooth operation depends on well greased valves. Plant managers don’t always remember to schedule the valves in a system for regular lubrication. The movement in a valve may only involve opening and closing, but that doesn’t mean valves don’t require the same lubrication as more complex, multipart components. Whenever two surfaces must slide over […]

Valve Flush Plugs

If one section of a piping system needs to be altered, cleaned or flushed, CPV O-SEAL® Flush Plugs can be used to protect the rest of a system from contamination. Simply remove the valve cartridge and insert the appropriate Flush Plugs into the O-SEAL® valve bodies at either end of the affected area and the […]

O-SEAL® Valve Installation, Operation, Disassembly Instructions

Instructions, CPV O-SEAL® Valves, 6000 PSI W-O-G Service INSTALLATION OF FITTINGS OR VALVE END CONNECTIONS – It is essential that the mating metal surface be in perfect contact and alignment to prevent extrusion of the O-ring under high pressure. To achieve this, the O-ring should be removed and a hand tight connection made before welding […]