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<title>Cedartubsdirect : pump flow rates 2inch  vs 1.5inch</title>
<link>pump-flow-rates-2inch--vs-1.5inch-60.html</link>
<description><![CDATA[Looking for a pump the visit our site for great support and technical info for pumps including pump curves.]]></description>
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<pubDate>Wed, 13 May 2026 22:41:44 -0500</pubDate>
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<title>pump flow rates 2inch  vs 1.5inch</title>
<link>pump-flow-rates-2inch--vs-1.5inch-60.html</link>
<pubDate>Wed, 13 May 2026 22:41:44 -0500</pubDate>
<description><![CDATA[<p style="padding: 10px; background-color: rgb(230, 255, 228);">
	<strong>Message</strong>: I am building a spa from scratch and am interested in purchasing the <a href="https://www.cedartubsdirect.com/2-hp-spa-pump-ultrajet-balboa-ultima-220240-vac-p-311.html">2 HP Spa Pump (Balboa) <span data-scayt_word="Ultima" data-scaytid="1">Ultima</span> 220/240 Model:<span data-scayt_word="DuraJet" data-scaytid="2">DuraJet</span> </a>but the intake and discharge are designed for 2&quot; plumbing. My spa has 1.5&quot; flex. Can I put a reducer in the intake/discharge or will that cause the pump to work harder and damage it, or reduce it&#39;s life, since the water flow will be reduced by .5&quot;? Please advise. - Jane<br />
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	Dated on : 07-11-2012</p>
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	<strong>Replies :</strong></p>
<p style="padding: 10px; background-color: rgb(255, 255, 255);">
	That is not a problem and we can provide the reducers @$4.50 each.&nbsp; We do precisely this with some of our own hot tubs. Dieter Jung Northern Lights Cedar Tubs Inc.<br />
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	Post By : Dieter Jung Dated On : 07-11-2012</p>
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<p style="padding: 10px; background-color: rgb(230, 255, 228);">
	This is good news.&nbsp; Thank you. I have another question with regard to pump and blower size in HP. As mentioned, I am building from scratch and&nbsp;highly interested in he Balboa Model <span data-scayt_word="VS501z" data-scaytid="3">VS501z</span> - System <span data-scayt_word="PN54356HC" data-scaytid="4">PN54356HC</span> - Kit <span data-scayt_word="PN" data-scaytid="5">PN</span> 54220-z I need to spec a pump and blower. I see that I cannot exceed <span data-scayt_word="12amps" data-scaytid="6">12amps</span> for either, but how do I calculate HP? My spa is octagon. 77&quot; across top, 33&quot; high. I have calculated approximately 600 gallons. I have just purchased&nbsp;5 Waterway Jet Air III Jets 2 - Pulse - 10 <span data-scayt_word="gpm" data-scaytid="7">gpm</span> 2 - <span data-scayt_word="Variflo" data-scaytid="10">Variflo</span> - 10 <span data-scayt_word="gpm" data-scaytid="8">gpm</span> 1 - Whirlpool - 10 <span data-scayt_word="gpm" data-scaytid="9">gpm</span> The blower will be pushing air through: 47 1/8&quot; holes 17 1/4&quot; holes Can I outfit the tub with a 1.5 hp blower and pump or should I go with <span data-scayt_word="2hp" data-scaytid="11">2hp</span> on each? I understand more may not be better in this case, so am apprehensive about the <span data-scayt_word="2hp" data-scaytid="12">2hp</span>, but if it will produce a robust burst of both water and air without damage, I would like that. Please advise. Thank you for your time, Jane<br />
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	Post By : <span data-scayt_word="jane" data-scaytid="14">jane</span> Dated On : 07-11-2012</p>
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<p style="padding: 10px; background-color: rgb(255, 255, 255);">
	Your water flow requirements are 50 <span data-scayt_word="gpm" data-scaytid="13">gpm</span> with all jets on.&nbsp; That is easily handled with the 1.5 pump. I can&#39;t help you with the blower calculation.&nbsp; We don&#39;t use them anymore and I don&#39;t have the information on design of blower system. &nbsp; Dieter<br />
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	Post By : Dieter Jung Dated On : 07-11-2012</p>
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	Excellent. Thank you for your rapid responses. Ordering soon from you guys!!! =)<br />
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	Post By : <span data-scayt_word="jane" data-scaytid="16">jane</span> Dated On : 07-11-2012</p>
]]></description>
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