Multiquip 59230 1" MNPT x 1/2" FNPT Plastic Valve

The Multiquip 59230 1" MNPT x 1/2" FNPT Plastic Valve is a genuine OEM replacement designed for the Multiquip Water Trailer series. Sourced directly from Multiquip, this valve delivers an exact fit for Water Trailer models, ensuring proper flow control without modification or adaptation at installation. If your water trailer is showing signs of leakage, restricted flow, or valve failure, replacing it with the correct OEM part keeps the system operating as originally engineered.

Key Features

• OEM-Matched Thread Specification — Manufactured to the correct 1" MNPT male-inlet and 1/2" FNPT female-outlet thread dimensions, ensuring a leak-free connection at both ports.
• Direct Drop-In Replacement — Threads directly into the existing plumbing on Multiquip Water Trailer models with no reworking of fittings or lines required.
• Water Trailer Series Fitment — Confirmed compatibility with the Multiquip Water Trailer lineup, covering WT and WTE series equipment.
• Corrosion-Resistant Plastic Construction — The plastic body resists corrosion and mineral buildup from continuous water contact, extending service life in wet-environment applications.
• Flow Control Integrity — A properly functioning valve maintains precise on/off control of water delivery; a worn or cracked valve causes uncontrolled flow, pressure loss, and potential jobsite water waste.
• Genuine OEM Quality — Supplied as an authorized Multiquip OEM part, meaning it meets the same dimensional and material standards as the original component installed at the factory.

A water trailer valve controls the release and shutoff of water flow within the trailer's plumbing system, typically used to regulate water distribution for dust suppression, compaction support, or site water delivery. When the valve body cracks, the threads strip, or the valve seat deteriorates, the system loses the ability to hold pressure or shut off cleanly — leading to leaks, wasted water, and potential downstream damage to connected hoses and fittings. Replacing the valve with the correct OEM part restores full flow control and keeps the trailer's water system performing as intended.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.