MRO Field Guide

Choosing Industrial Valves: Repair Kit, Mixing Kit, or 1-Inch Process Control Valve?

Compare four industrial valve options from a $16.44 0.5-inch check valve repair kit to a $664.70 bronze 1-inch pneumatic process control valve, with notes on a mixing valve kit and a stainless motorized valve.

Last updated Aug 17, 2026

Quick Take

Industrial valve shopping usually comes down to scope: are you replacing worn internals, assembling a mixing package, or choosing a complete process control valve with the right actuation style? The four options below cover each of those situations, with listed prices ranging from the $16.44 POWERS 0.5-inch check valve replacement kit to the $664.70 Schrader Bellows Sinclair-Collins pneumatic valve.

For a component-level repair, the POWERS replacement kit is the entry point. For a valve kit and a stainless motorized valve, the POWERS N/125 Mixing Valve Kit and the 1-inch stainless motorized valve sit in the middle of the price range. At the upper end, the bronze 1-inch NPT Schrader Bellows unit is the specialized pneumatic control option.

Listed Price Comparison

OptionListed PricePrice Bar
POWERS Check Valve Repair Kit SX-0111278 (#230 132, 0.5 in)USD 16.44
POWERS N/125 Mixing Valve Kit 390-293 NOSUSD 260.00
1-Inch Stainless Process Control ValveUSD 220.00
Schrader Bellows Sinclair-Collins C064-4002USD 664.70

Decision Matrix

If your need is...A matching option is...
Component-level replacement for a 0.5-inch check valvePOWERS Check Valve Replacement Kit
A new-old-stock mixing valve kit from the Powers Process Control linePOWERS N/125 Mixing Valve Kit 390-293 NOS
A 1-inch stainless process valve with motorized operation for water1-Inch Stainless Process Control Valve (A743 CF8M)
A 1-inch NPT threaded bronze valve with pneumatic actuationSchrader Bellows Sinclair-Collins C064-4002

Product Notes

POWERS Process Check Valve Replacement Kit (#230 132, 0.5 in)

POWERS Process CHECK VALVE SX-0111278 REPLACE KIT #230 132 Kit, 0.5 in

This is a repair kit for a 0.5-inch check valve rather than a complete valve body. The title points to the SX-0111278 replacement kit configuration and the #230 132 kit reference, and the kit includes the parts needed for one pair of stops. That makes it a practical choice when your existing valve is already in place and you only need the internal replacement parts. The condition is listed as New. The obvious limitation is its size: at 0.5 inches, it is not positioned for 1-inch process valve applications, and the focus is on repair rather than building a new system from scratch.

POWERS Process Control N/125 Mixing Valve Kit (390-293)

POWERS PROCESS CONTROL N/125 Mixing Valve Kit 390-293 NOS

This NOS mixing valve kit comes from POWERS Process Control and is listed in New - Open box condition. It is the middle-priced package in this set and carries a United States country of origin. The model reference 390-293 gives you a specific kit identifier, while the N/125 label positions it as a mixing valve kit within the POWERS Process Control line. If your project is built around that mixing package, it offers a more complete path than buying replacement internals alone. The tradeoff is that it is a model-specific mixing kit, so it is aimed at the N/125 setup rather than serving as a generic replacement for any process valve.

1-Inch Stainless Process Control Valve (A743 CF8M)

Process Control Valve 1" Stainless A743 CF8M

This option is a 1-inch stainless process control valve made from A743 CF8M. It is listed as New - Open box with United States country of origin, and its operating details indicate water service and motorized valve operation. It carries a 1500 PSI CWP rating and is built around a pilot-operated pin-type controller. For a 1-inch water line that needs motorized control, this is a direct listed match among the four. The limitation is actuation type: if your existing setup requires pneumatic operation, this valve is not the one to choose, because its operating details point to motorized use rather than air-actuated use.

Schrader Bellows Sinclair-Collins C064-4002 Process Control Valve (1 in NPT)

Schrader Bellows Sinclair-collins C064-4002 Process Control Valve 1in Npt

This valve is the most specialized option in the group. It is a 1-inch NPT process control valve from the Schrader Bellows Sinclair-Collins line, with pneumatic actuation, a bronze body, and threaded mounting. Those details make it a strong fit for a 1-inch threaded line that needs air-actuated control, especially if bronze is the material you are looking for. It is also the highest-priced item in the set, so it is not the natural pick if your project only needs a small repair kit or a water-specific motorized valve. The condition is listed as New - Open box, and the model reference is C064-4002.

Final Recommendation by Use Case

  • For a low-scope repair on a 0.5-inch check valve, go with the POWERS replacement kit.
  • For a mixing kit from the POWERS Process Control line, choose the N/125 Mixing Valve Kit.
  • For 1-inch stainless water service with motorized operation, select the A743 CF8M process control valve.
  • For a 1-inch NPT pneumatic bronze valve with threaded mounting, pick the Schrader Bellows Sinclair-Collins C064-4002.
Products in this article
POWERS Process CHECK VALVE SX-0111278 REPLACE KIT #230 132 Kit, 0.5 inUSD 16.44View on eBayPOWERS PROCESS CONTROL N/125 Mixing Valve Kit 390-293 NOSUSD 260.00View on eBayProcess Control Valve 1" Stainless A743 CF8MUSD 220.00View on eBaySchrader Bellows Sinclair-collins C064-4002 Process Control Valve 1in NptUSD 664.70View on eBay
POWERS Process CHECK VALVE SX-0111278 REPLACE KIT #230 132 Kit, 0.5 inUSD 16.44View on eBayPOWERS PROCESS CONTROL N/125 Mixing Valve Kit 390-293 NOSUSD 260.00View on eBayProcess Control Valve 1" Stainless A743 CF8MUSD 220.00View on eBaySchrader Bellows Sinclair-collins C064-4002 Process Control Valve 1in NptUSD 664.70View on eBay

You may also like

Finding more guides for you…