RVC Replaceable Valve Company

Change valves in minutes not hours!

Replace a valve as easily as a spark plug!


No more valve seat issues with hours of work! Never again !!! The RVA replaceable valves are tested for sealing before shipment and will not fail during assembly. No shrink or press fit valve seat installation is required. Should an assembly be damaged, you can replace it in minutes; there is no longer the need to remove an installed head to make a valve repair! Get rid of the liquid nitrogen and furnace as well as 150 year old technology!!


Should you have a valve failure during a race, you can replace that valve in minutes, not hours, and continue the race!! Note: All Replaceable Valve Assemblies are engine specific designed and produced and can be fabricated to any size and any configuration. Replaceable Valve Assemblies are available for intake and exhaust on both over-head and flat-head configurations. These Replaceable Valve Assemblies are available for cast-iron and aluminum head installations.

Valve Selection Data

Model Numbers




The RVA-0100 series can be used for intake and exhaust on low and medium power engines. The valves differ only in the mounting methods. The V1 and V2 styles are held in place with one large nut and the V3 and V4 styles use a flange and several bolts.









The RVA-0200 series are circulating coolant-cooled valves for use primarily for exhaust ports. These valves can be used for both intake and exhaust functions in high performance engines.









The RVA-0300 series can be used in the “flat-head” type of engines. This version functions as both intake and exhaust valves.



The Whys for the Novice Mechanic!

If you are a backyard mechanic or you have no engine repair experience, you will still be able to understand “why” the RVAs were invented. Everyone can understand that it takes both time and money to make major repairs to an automotive engine. That is especially true when the problem is the valve system of any engine, car, boat, or plane.

The most common failures of engine valves is a stuck valve and a burnt valve, both failures can no longer seal the combustion chamber. Valve failure repairs for current engine technology will require the disassembly of a major portion of the engine which takes many hours of labor. The repair cost will vary based on the type and quality of the engine, however the price will always be high and may be high enough to warrant abandonment of the vehicle; this is true with the technology of the past 150 years!

The RVAs were designed to reduce the labor and time needed to make a valve repair from three days to three hours! The reduction of labor will permit the engine to be repaired for an acceptable amount of money thereby saving the vehicle regardless of what it is: a car, a truck, a boat or an airplane.

The Whys for the Mechanic!

As a mechanic, you know the amount of work required to repair a failed valve seat or valve face of an engine. You are aware that the fuel system must be removed followed by the intake manifold. Next, you must remove the exhaust manifold followed by the rocker box cover. Now you can remove the rocker arm assembly giving you access to the head mounting bolts. You can now remove the engine head regardless if it is a Straight or V configuration or a single cylinder as in a radial aircraft engine or small lawn mower engine.

Once you have access to the valve and seat, you can make the needed repairs which may be reconditioning of the existing parts or replacement of the failed valve parts and any other valves as necessary. Should valve seats be the issue, the repair time can be much higher than replacing or reconditioning of the existing valves. The installation of a new valve seat or seats will take much more time.

Had the engine been built using RVAs, the repair would not require the removal of the intake or exhaust manifolds and head. You would simply remove the rocker box cover and the rocker arm assembly; then you can remove and replace the failed valve assembly as easily as you would replace a spark plug. Once the new RVA assembly is installed, you will replace the rocker arm assembly and rocker box cover and your repair is complete! The 150 year old valve technology can now be replaced with patented RVA technology.

The Whys for the Engine Builder!

It has been determined that the most costly function in the process of manufacturing an engine is the repair needed to an engine which fails a test run inspection. It has also been determined that valve failures, when they occur, are the second-most labor-intensive repair. Therefore, the reduction of the repair time for the new engine producer will reduce cost and increase profit. A reduction in both original manufacturing and repair cost can be achieved by using the RVA Valves. Using RVAs will also provide a product which will cost less to repair for the end-user. Reduced maintenance cost of your engine product is a very attractive feature for the engine buyer.

To achieve both of these benefits, the engine manufacturer must utilize the technology of the Removable Valve Assemblies. The RVAs are a series of valve assemblies designed to combine the valve and valve seat into a single part. These assemblies are tested by the manufacturer and guaranteed to function properly. Therefore, the probability of a valve or valve seat failure during new engine assembly is reduced if not totally eliminated. Should a failure of the RVA occur, the repair is a very quick replacement of the failed assembly without cylinder head removal. Also note that the failed RVA is guaranteed and will be replaced by the RVA manufacturer. Hence, the engine manufacturer reduces time to manufacture and the customer receives a product which will cost less to maintain. Included in that reduced maintenance cost is the ability to make major engine valve repairs “in the field” and with the possible salvage of the failed parts.

The engine manufacturer receives both a cost reduction and provides his customer with a maintenance cost reduction and a higher engine life. These benefits allow both the producer and the user to receive very attractive financial benefits.


1230 Coleman Ave. Santa Clara, CA. 95050

(408) 727-0100 / (408) 727-2100