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<title><![CDATA[EC21 Product Catalogs - BALLAST]]></title>
<link><![CDATA[https://www.ec21.com/ec-market/BALLAST--1814/1/BALLAST.html]]></link><item>
<title><![CDATA[Lab Energy-saving Electric Operated Two Pump Heads Diaphragm Vacuum Pump Oil Free Vacuum Pump]]></title><link><![CDATA[https://chanyonancy123.en.ec21.com/Lab_Energy_saving_Electric_Operated--12026627_12027349.html]]></link><description><![CDATA[ballast
Yes
Valve plate material
FFKM
Diaphragm material
PTFE+FKM
Gas pipe material
FEP
Pumping connector material
PTFE+C
Gas ballast material
FKM/PTFE+C
Air chamber material
ETFE
Dimensions
270W*250]]></description><pubDate><![CDATA[20241219]]></pubDate></item>
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<title><![CDATA[Advanced Two-Stage Oil-Sealed Rotary Vane Pump for Laboratory and Industrial Use PNK-DP-030C]]></title><link><![CDATA[https://pronotek.en.ec21.com/Advanced_Two_Stage_Oil_Sealed--12005008_12008653.html]]></link><description><![CDATA[ballast valve closed)
Mbar
7.0 · 10⁻⁴
Ultimate total pressure (gas‑ballast valve closed)
Mbar
5.0 · 10⁻³
Ultimate total pressure (gas‑ballast valve open)
Mbar
2.0 · 10⁻⁴
Water vapor]]></description><pubDate><![CDATA[20240923]]></pubDate></item>
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<title><![CDATA[2XZ Series Double Stage Rotary Vane Vacuum Pumps]]></title><link><![CDATA[https://doctorpump.en.ec21.com/2XZ_Series_Double_Stage_Rotary--11435863_11468838.html]]></link><description><![CDATA[ballast valve. Its function is to fill the exhaust space with certain amount of air, when the valve is open, so to reduce the proportion of the partial pressure of vapor in the total discharge pressu]]></description><pubDate><![CDATA[20211102]]></pubDate></item>
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<title><![CDATA[Tobee Mission Magnum Sandmaster Pumps Used in Solids Control Mineral Oil Base]]></title><link><![CDATA[https://pump11.en.ec21.com/Tobee_Mission_Magnum_Sandmaster_Pumps--11752849_11752888.html]]></link><description><![CDATA[ballast)• Barite, ferric oxide, and mineral oil• Base drilling muds• Glass fibers• Sugar processing• Ash or coal conveyers• Cement
Mission Magnum I Pump Parts List:
Applications 
Tobee Pu]]></description><pubDate><![CDATA[20230320]]></pubDate></item>
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<title><![CDATA[Single Stage Oil Rotary Vane Pump ATS Series]]></title><link><![CDATA[https://wspump.en.ec21.com/Single_Stage_Oil_Rotary_Vane--11583923_11583940.html]]></link><description><![CDATA[ballast
torr
0.08(0.06)
Gas ballast I
0.5(0.375)
Gas ballast II
1(0.75)
Inlet port
PF 1 1/4&quot;
Outlet port
PF 1 1/4&quot;
Motor power(50Hz/60Hz)
kW
1.5/2.0
Type of protection
IP55
Normal motor speed
50Hz
R.]]></description><pubDate><![CDATA[20230523]]></pubDate></item>
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<title><![CDATA[BDR-30 1.1kw Oil Rotary Vane Vacuum Pump]]></title><link><![CDATA[https://cece0126.en.ec21.com/BDR_30_1.1kw_Oil_Rotary--10858660_10860726.html]]></link><description><![CDATA[Pump Character 
1: Double stage and high speed directly connected structure.
2: Equipped with specially designed air ballast valve to prevent water mixing with oil pump and prolong pump working time.]]></description><pubDate><![CDATA[20181126]]></pubDate></item>

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