Keckley Valve Products

Keckley Company


Phone: 847-356-0566   Fax: 847-356-0747      E-Mail:

Back to Keckley Products

Suction Diffuser & Triple Duty Valves

Keckley manufactures suction diffusers and triple duty valves (TDV) as pipeline and pump accessories. Suction diffusers and triple duty valves provide specialized and unique functions different from other Keckley products.

Suction Diffusers

Keckley Style PSD Suction Diffusers

Spec & Tech Sheets

Keckley Company Style PSD Suction Diffuser
Keckley Style PSD
Suction Diffuser

Benefits & Features

Keckley Style PSD suction diffusers mount to the suction side of a pump in either a horizontal or vertical position. It is designed to remove any foreign matter that may be hazardous to the pump or other system components, while providing the proper flow conditions to the pump. Where space is limited, the Keckley Style PSD can be used as an elbow (in some cases a reducing elbow) with a built in strainer for easy maintenance and system performance.

The Keckley Style PSD has integral straightening vanes to ensure uniform flow to the suction inlet of the pump. The Style PSD provides minimal pressure drop with its oversized body and screen, and is normally supplied with a 20 mesh 304 stainless steel removable start-up sleeve to help promote a cleaner more trouble free system. The Style PSD is furnished with a bolted cover and o-ring seal, cast supporting pads for easy mounting of standard ID support foot, and with plugged drain connection.

Keckley Special Purpose Products
Technical Data

Triple Duty Valves

Keckley Style TDV Triple Duty Valves

Spec & Tech Sheets

Keckley Style TDV Shut-Off Valve
Keckley Style TDV Triple Duty Valve



Benefits & Features

Keckley Style TDV triple duty valves are primarily required on the discharge side of a centrifugal pump in a hydronic heating or cooling system. The Style TDV functions as a shut-off valve, spring loaded silent check valve, and balancing valve.

The Keckley Style TDV has an automatic and silent operation. The disc will open when the line pressure is approximately 1/4 PSI. As the line pressure approaches zero, the spring will close the disc to prevent flow reversal and water hammer. The flow through the valve can be adjusted from bubble tight shut-off to full flow by the acme rising stem.

The center guided soft seal disc ensures that there is no leakage. The rising stem design includes an adjustable position indicator for accurate disc positioning for throttling service. The unit comes with a standard gauge taps at both the inlet and outlet sides and a NPT drain plug.

Keckley Style TDV's are constructed from rugged cast iron castings that are machined to exacting specifications. These bodies have drilled flanges that are in accordance with ASME B16.1. Keckley Style TDV's can be supplied in other body materials: Carbon Steel and Stainless Steel upon request.

Keckley Triple Duty Valves
Technical Data

Can't find what you are looking for?
Call or E-mail Now . . . for Immediate Service, Pricing, and Delivery

* * * 800-876-0036 * * *

Phone: 847-356-0566      Fax: 847-356-0747      E-Mail:



Blog with M&M Control ServiceFind us on FacebookLinked InX is formerly known as Twitter


WARNING: Some of the products we sell can expose you to chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Contact your sales rep or go to for more information.

All registered trademarks are fully acknowledged by: M&M Control Service, Inc.

M&M Control Service, Inc. does not represent or claim any affiliation, association, connection or approvals with or from any manufacturer unless stated. We fully acknowledge all trademarks and/or names which are pictured and/or listed throughout the M&M Control Service, Inc. Website.

(PowersTM, also known as, POWERS REGULATOR, MCC POWERS, POWERS-FIAT, POWERS PROCESS CONTROLS, CRANE POWERS and POWERS, a Watts Industries Company. The POWERS trademark is owned by Powers, A Division of Watts Water Technologies, Inc. M&M Control Service, Inc. Is a Stocking Distributor for PowersTM)

(All names unintentionally excluded from this list will be included in the next revision upon our notification.)

*This list may vary, as names not appearing on this list are entitled to the acknowledgment of their Trademarks by M&M Control Service, Inc.

Copyright 2024 M&M Control Service Inc., All Rights Reserved