Reciprocating cryogenic pumps SDPD
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Reciprocating cryogenic pumps SDPD

Reciprocating cryogenic pumps SDPD are designed for cylinders and buffer vessels filling under a pressure of up to 420 bar.

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Description

Each pump is mechanically and cryogenically tested prior to its delivery. Such tests ensure the greatest productivity, which meets Customer’s requirements.

Thanks to the precise diagnosis of measuring devices, necessary results are achieved:

  • differential pressure;
  • flow velocity;
  • tightness;
  • pump efficiency;
  • the height of the liquid column above the suction port of the pump;
  • noise and vibration levels.

Peculiarities of SDPD cryogenic pumps:

  1. The cold end is slanted upwards by 10 o, thus improving degassing of the pump cylinder and preventing accumulation of gas in the suction chamber prior to start-up and during operation. 
  2. Thanks to the excellent vacuum insulation, the lowest temperature is kept in the pump body, and the liquid is available for an instant re-start (without venting).
  3. The suction chamber is designed to separate any flash gas from the incoming liquid, assuring a homogeneous flow of cold liquid into the cylinder.
  4. The straight inflow suction valve provides the best possible low resistance flow characteristic, ensuring a low NPSH requirement. (large diameter of the inflow suction valve.
  5. The thin"hat" seal rings remain flexible even at extremely low temperatures.
  6. The cold end is either screwed in, or bolted to an intermediate piece. This open distance piece serves as a cold break between the cylinder and the crank drive. 
  7. Both the crank drive and the intermediate part have connections for an optional nitrogen purge.  
  8. Thermosiphon tank suction valve execution (option), allowing for a shorter cool down period as well as reduced losses.
  9. Piston head made of bronze allowing a safer operation.
Data sheet
10 Items
Applications
cylinder and buffer tank filling
Liquids pumped
oxygen, nitrogen, argon, carbon dioxide, liquefied natural gas (LNG), nitrous oxide
Drive type
oil lubricated crank drive
Design pressure
SDPD 22/20: up to 420 bar, SDPD 30/20, 30/32: up to 280 bar
Shipping & Returns

Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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