Radium Roll Over Valve, 10AN ORB To 3/4" Barb
Radium Roll Over Valve, 10AN ORB To 3/4" Barb
Universal fit
No vehicle selection needed.
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
Fitment not confirmed
This part may still fit. Check the details below or contact us before ordering. Ask about fitment
In Melbourne? Fit it in our workshop.
We fit parts in-house at the RevZone workshop. Book a time and bring your car in.
Description
Radium Roll Over Valve - 10AN ORB to 3/4" Barb
The Radium Engineering Roll Over Valve is a safety-critical fitting designed to prevent oil from escaping the engine or catch can in the event of a vehicle rollover or inversion. When mounted in the vertical upright position, the valve allows air to flow freely in both directions — permitting normal crankcase venting. If the fitting rotates more than 90 degrees from upright, it automatically closes and shuts off all flow, containing fluids inside the engine or catch can.
This valve is most commonly used on engine vents and oil catch can vents. It is designed to be compatible with the Radium Engineering Air Filter, 0.75" ID (P/N: 18-0042, sold separately) for a complete vented and protected solution.
Important: This fitting must always be mounted in the vertical upright position for correct operation.
- Threads: 7/8-14 UNF (10AN ORB)
- Barb OD: 0.75" (19mm)
- Valve Material: Stainless steel
- Retaining Ring Material: Stainless steel
- O-Ring Material: FKM (Viton)
- Body Material: 6061 aluminium
- Body Surface: Type-II anodised
Compatible Mating Parts
- 18-0042 — Radium Air Filter, 0.75" ID (sold separately)
Part Number:
- 20-0594 — Radium Roll Over Valve, 10AN ORB to 3/4" Barb
Why Radium Engineering?
- ✅ Manufactured in the USA to motorsport-grade tolerances
- ✅ CNC-machined billet aluminium components built for performance and longevity
- ✅ Trusted by high-power build tuners and race teams worldwide
- ✅ Bolt-on fitment — no cutting, drilling, or fabrication required
- ✅ FKM (Viton) o-ring sealing — compatible with E85, pump petrol, and all exotic fuel and oil types
Specifications
- Part Number
- 20-0594
- Brand
- Radium Engineering
Shipping
Orders are processed within 1-2 business days (Monday to Friday), and orders placed before 12pm AEST are usually dispatched the same day. Once dispatched, standard shipping takes 3-7 business days and express 1-3, with tracking emailed as your order leaves.
If part of your order is out of stock, we'll contact you with the option to split the shipment or hold it until everything is ready. Read the full shipping policy.
Returns
You have 14 days from delivery to request a return on unused parts in their original packaging. Refunds incur a 15% restocking fee (20% for special orders), or choose store credit and the full purchase value is applied to your account.
Parts that have been test fitted, installed, or used can't be returned, and special-order or overseas-ordered items are assessed case by case. Faulty or incorrectly supplied items are always covered at no cost to you. Read the full returns policy.