Marelon Full-Flow Seacock & 2″ Mushroom Through-Hull
This integrated 2-part system comes complete with a Marelon® valve and properly matched mushroom head thru-hull with super strong “buttress” type threading. This new package is designed to eliminate valve and thru-hull thread style mismatches and associated cross-threading for after market installations common when customers select individual parts from bins.
Features:
- System Includes Full Flow Seacock With Integrated Hose Connector and Mushroom Thru Hull
- Exceeds ABYC. H-27 Standards – UL Approved
- For Use Above or Below Waterline
- Never Corrodes – Exclusive Polymer Formulation
- Includes Emergency Handle Cap Thru-Hull Plug
![Perko 0540 Spare Cap w/Chain [0540DPG99A]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/perko-0540-spare-cap-w-chain-0540dpg99a.webp)
![Perko Spare Gas Cap w/O-Ring & Cable [1270DPG99A]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/perko-spare-gas-cap-w-o-ring-cable-1270dpg99a.webp)
![Perko 0541Vented Fill f/1-1/2" Hose - Straight Neck - Gas [0541DPGCHR]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/perko-0541vented-fill-f-1-1-2-hose-straight-neck-gas-0541dpgchr.webp)
![GROCO 1" Bronze Flanged Full Flow Seacock [BV-1000]](https://www.greathardwaredepot.com/wp-content/uploads/2026/09/groco-1-bronze-flanged-full-flow-seacock-bv-1000.webp)
