This is an original replacement inlet and outlet valve assembly designed for Sunsun HW series external canister filters. The part is supplied directly from the Sunsun manufacturer to ensure precise compatibility, stable sealing performance, and long-term durability.
It is suitable for restoring proper water flow control when the original valve becomes worn, leaking, cracked, or difficult to operate.
Compatible with the following Sunsun canister filter models:
HW-302
HW-402
HW-303
HW-403 A / B
HW-304
HW-404 A / B
HW-3000
Please confirm your exact filter model before purchase.
Original factory part – Manufactured by Sunsun for exact fit and secure connection
Flow control function – Allows convenient shut-off and maintenance without draining the entire filter system
Reliable sealing – Designed to reduce leakage risk and maintain stable water circulation
Durable plastic construction – Suitable for freshwater and marine aquarium setups
Easy installation – Direct replacement, no modification required
Designed for aquarium external canister filters used in:
Freshwater aquariums
Marine aquariums
Planted tanks
Community tanks
Fish breeding systems
1 × Sunsun Inlet & Outlet Valve Assembly (model specific)