Drain Assm, 3/4" MPT w/o Sil. for 2" Vlv

This 3/4-inch MPT drain line flow control assembly sets the backwash rate on a 2-inch valve. Nelsen Corp part CL-DLFC-200-75 is a drain assembly with a 3/4-inch male pipe thread (MPT) outlet, supplied without a silencer, sized for 2-inch control valves.

• Manufacturer: Nelsen Corp
• Part number: CL-DLFC-200-75 (alternate V3158-04)
• Outlet: 3/4" MPT (male pipe thread)
• For: 2" control valves
• Configuration: without silencer
• Function: drain line flow control (DLFC) fitting

The drain line flow control governs how fast water leaves the valve to the drain during backwash and fast rinse, which in turn sets the bed expansion that lifts, tumbles, and cleans the filter media. Using the flow control matched to the valve size, tank diameter, and media keeps backwash effective without wasting water or under-lifting the bed, which would leave trapped iron, sediment, or fines behind. This assembly threads onto the drain port of a 2-inch valve with a 3/4-inch MPT connection and ships in the no-silencer configuration for installations that do not require noise damping. Confirm the required flow-control button rating for your tank diameter and media before installing, and match the 2-inch valve fitment. A direct service part for large residential and commercial systems.

Drain Assembly for 2-Inch Valves

This is a drain line assembly with a 3/4 inch MPT (male pipe thread) connection, supplied without silencer, and built for use with 2 inch control valves. The drain assembly is the fitting that carries backwash and regeneration water out of the valve and to your drain. On a larger 2 inch valve, this is the port through which spent water and flushed-out contaminants leave the system during a cleaning cycle, so a properly sized and sealed drain connection is an important part of reliable operation.

When You Need This Part

You may need a fresh drain assembly when the original is cracked, worn, leaking at the threads, or missing after service, or when you are building up a 2 inch valve and need the correct drain fitting to complete the plumbing. The 3/4 inch MPT thread makes it straightforward to connect to standard drain-side plumbing, and the without-silencer version is chosen where a silencer is not required or is being handled separately. Matching the drain assembly to the valve size ensures the flow it was designed for.

Installation and Buying With Confidence

Installing the drain assembly generally means threading it into the valve's drain port with appropriate sealant and running the drain line to your discharge point so it flows freely without kinks or restrictions. A clean, secure drain connection helps the valve backwash and regenerate as designed. Because drain fittings vary by valve size and configuration, confirming the fit matters. At Water Softener Plus we include the documentation you need and are glad to help you verify this assembly is correct for your 2 inch valve before you order.