[Elle_Rav4]

Short Answer
I think the lower drawing actually shows two VSVs having different functions: The VSV for fuel pressure control (required on California emissions) and the EGR VSV.

To replace the EGR VSV, I would buy the Aisin VST-026.

Long Answer
The service manual (EG section) has drawings of the EGR VSV and Fuel Pressure Control VSV, mounted right next to each other. In my next post, I linked a site that has the service manual sections.

For the EGR VSV, I see on toyodiy.com the following for a 1995 2.2L Camry (drawing 17-08):

25860 VALVE ASSY, VACUUM SWITCHING, NO.1
25860-74050 NO.1 1 $89.75
25860-74160 CALIFORNIA SPEC 1 $197.57

I googled on the two part numbers and the parts look alike except for color. The Aisin equivalent part numbers are:
Federal, Aisin VST-006 (advertised for both 25860-74050 and 25860-74160)
California, Aisin VST-026 (advertised for only 25860-74160)

As you may know, Aisin is the OEM manufacturer for many Toyota parts.

For 2580-74160, Rockauto's search engine also spewed out both VST-006 and VST-026.

The only difference between the Aisin VST-026 and Aisin VST-006 might be the filter built into the one end? I am not sure.

I will post the EGR VSV vacuum hose routing separately.

Other causes of a rough idle when warm include an iffy ECT sensor; air in the coolant; and a failing front oxygen sensor.

 

[Elle_Rav4]

Underneath the hood might be a vacuum hose diagram. Here is what I know:

EGR VSV Port E is the port closest to the VSV filter. VSV Port E connects to the port on the top of the EGR valve.

EGR VSV Port G is the port furthest from the VSV filter. VSV Port G connects to the port labeled "Q" on the EGR vacuum modulator.

Any doubts, go to https://cardiagn.com/toyota-5s-fe-engine-repair-manual/ and download the following sections:

Engine Mechanical
MFI/SFI System
and possibly the Emission system.

Keyword search these sections for "VSV" and similar.

 

[Elle_Rav4]

Splieslife,

-- Can you confirm that the Check Engine Lamp (CEL) lights when the key is in the ON position (but engine not running)?

-- Have you checked for codes?

-- I agree with new echo owner that the EGR vacuum modulator is suspect here. Have you taken the EGR vacuum modulator top off and inspected the filter, for one thing? Though if the EGR vacuum modulator was acting up, I would expect a code to be thrown.

-- I attach the 5SFE service manual section that discusses troubleshooting for improper idle. Per this service manual section, I would also be checking the MAP sensor.

-- Here's a discussion of a 1998 2.2L Camry where the EGR valve was testing fine, yet replacement of the EGR valve fixed the problem: Stall erratic low idle at stop, after longer drive...

 

[Elle_Rav4]

-replace the two vacuum lines that run from my EGR system, under the engine, to the upper coolant port

Consider replacing all vacuum lines with high temperature resistant silicone hose, as described here:
www.rav4world.com/threads/vacuum-line-replacement-with-high-temp-silicone-lines.255961/
I bought my silicone hose (various diameters, per guidance from the thread and trial-and-error) from eBay and replaced all hoses over a few days, a few hours total a few years ago. I took a propane torch to this hose recently, for a different project. The torch did not even leave a mark on the hose.