Pros, Join Our TradeMaster Program!
The Check-Trol flange is a combination isolation valve, flow control valve, and companion flange for circulators. The full port ball valve allows the circulator to be removed from the system without draining the system. The internal spring check prevents gravity circulation. Free floating companion flange makes pump installation a snap.

Flow Control Valve
Prevents gravity circulation and flow in the wrong direction.

Isolation Valve
Allows for servicing or replacement of the circulator without draining the system.

Companion Flange
Free-floating companion flanges allow easy alignment for optimal handle positioning.

Another advantage of the Check-Trol is the minimal pressure drop, especially when compared to the losses that can be experienced when a check valve is installed internal to the circulator. The Check-Trol flanges are packaged with an isolation flange of the same size to create a pair. Capscrews and nuts are included.

**NOTE: See "User Guide" document below for a description of pump models applicable for this Check-Trol
Read more
Connection Size:
Connection Type:
Max Pressure (PSI):
Max Temp (F):
Speak with a real person who will go out of their way to help!
Closed Now: Phone Hours
Monday – Thursday
8am–7:45pm ET
9am–7:45pm ET

2 Videos

    Product Reviews

    Product Q&A

    Add-on Item

    This item is cost-prohibitive to ship on its own but is available to ship with orders over $200.

    Why don't we show the price of this item?

    We try to always offer you the lowest prices possible, but some manufacturers require that we only show these low prices once you take further action.

    To see the price, simply add the item to your cart or sign in.