Radium Engineering valve for PCV (positive crankcase ventilation) systems. Do not mistake this for a simple one-way check valve. The PCV valve's internal plunger dynamically meters the appropriate amount of crankcase vent airflow based on current engine load. Proper PCV valves prevent the "vacuum leak" that a check valve would create at low loads. Also, in the event of a intake manifold backfire, the PCV valve closes preventing combustible vapors from igniting in the crankcase.
![](http://www.radiumauto.com/Assets/ProductImages/20-0530_Catch_Can_Install.jpg)
The PCV valves can be used on the outlet of any
Radium Engineering Catch Can (shown above) or any related part that uses -10AN ORB threads.
20-0530 SPECIFICATIONSAluminum: 6061 Type-II Anodized
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 3/8" Barb (9.5mm)
![](http://www.radiumauto.com/Assets/ProductImages/20-0530.jpg)
20-0561 SPECIFICATIONSAluminum: 6061 Type-II Anodized
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 6AN Male
![](http://www.radiumauto.com/Assets/ProductImages/20-0561.jpg)
20-0683 SPECIFICATIONSAluminum: 6061 Type-II Anodized
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 5/16" SAE Quick Connect Male
![](https://www.radiumauto.com/Assets/ProductImages/20-0683.jpg?ts=043411)
20-0688 SPECIFICATIONSAluminum: 6061 Type-II Anodized
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 10mm SAE Quick Connect Male
![](http://www.radiumauto.com/Assets/ProductImages/20-0688.jpg)
20-1000-1006-PCV SPECIFICATIONS
Quick Connect Material: Anodized Aluminum
10AN ORB Material: Stainless Steel
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 6AN Male
Feature: Low Profile 90 Degree Swivel
NOTE: As shown, this is slightly taller than a standard 10AN ORB fitting. An extra 0.26" (6.7mm) clearance is required for the O-ring to properly seat.
![](https://www.radiumauto.com/Assets/ProductImages/20-1000-1006-PCV.jpg?ts=031821)
20-1000-1010B-PCV SPECIFICATIONS
Quick Connect Material: Anodized Aluminum
10AN ORB Material: Stainless Steel
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 10mm Barb
Feature: Low Profile 90 Degree Swivel
NOTE: As shown, this is slightly taller than a standard 10AN ORB fitting. An extra 0.26" (6.7mm) clearance is required for the O-ring to properly seat.
![](https://www.radiumauto.com/Assets/ProductImages/20-1000-1010B-PCV.jpg?ts=031821)
20-1000-1010S-PCV SPECIFICATIONS
Quick Connect Material: Anodized Aluminum
10AN ORB Material: Stainless Steel
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 10mm SAE Quick Connect Male
Feature: Low Profile 90 Degree Swivel
NOTE: As shown, this is slightly taller than a standard 10AN ORB fitting. An extra 0.26" (6.7mm) clearance is required for the O-ring to properly seat.
![](https://www.radiumauto.com/Assets/ProductImages/20-1000-1010S-PCV.jpg?ts=031821)
20-1000-10313-PCV SPECIFICATIONSQuick Connect Material: Anodized Aluminum
10AN ORB Material: Stainless Steel
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 5/16" SAE Quick Connect Male
Feature: Low Profile 90 Degree Swivel
NOTE: As shown, this is slightly taller than a standard 10AN ORB fitting. An extra 0.26" (6.7mm) clearance is required for the O-ring to properly seat.![](https://www.radiumauto.com/Assets/ProductImages/20-1000-10313-PCV.jpg?ts=104300)
20-1000-10375-PCV SPECIFICATIONSQuick Connect Material: Anodized Aluminum
10AN ORB Material: Stainless Steel
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 3/8" SAE Quick Connect Male
Feature: Low Profile 90 Degree Swivel
NOTE: As shown, this is slightly taller than a standard 10AN ORB fitting. An extra 0.26" (6.7mm) clearance is required for the O-ring to properly seat.![](https://www.radiumauto.com/Assets/ProductImages/20-1000-10375-PCV.jpg?ts=104300)
20-1000-1065-PCV SPECIFICATIONSQuick Connect Material: Anodized Aluminum
10AN ORB Material: Stainless Steel
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 6.5mm Barb
Feature: Low Profile 90 Degree Swivel
NOTE: As shown, this is slightly taller than a standard 10AN ORB fitting. An extra 0.26" (6.7mm) clearance is required for the O-ring to properly seat.![](https://www.radiumauto.com/Assets/ProductImages/20-1000-1065-PCV.jpg?ts=104300)
20-1000-1085-PCV SPECIFICATIONSQuick Connect Material: Anodized Aluminum
10AN ORB Material: Stainless Steel
Sealing O-rings: FKM and Silicone
Inlet: 10AN ORB (7/8"-14 threads)
Outlet: 8.5mm Barb
Feature: Low Profile 90 Degree Swivel
NOTE: As shown, this is slightly taller than a standard 10AN ORB fitting. An extra 0.26" (6.7mm) clearance is required for the O-ring to properly seat.![](https://www.radiumauto.com/Assets/ProductImages/20-1000-1085-PCV.jpg?ts=104300)