Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Tools to help you improve your pump operability, reliability, and efficiency 20 Years of  Vespel® CR-6100 Our favorite material recently passed a milestone. The first pump ever fitted with Vespel® CR-6100 was upgraded 20 years ago in November 1997.   The first pump was a vertically suspended condensate pump at a refinery in California. The pump Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Better operability, reliability, and efficiency The PERF-Seal™ A while back, we introduced the PERF-Seal™ design for center bushings, throttle bushings, and pump wear rings.   Below you can see the center bushing and case wear rings of a 2-stage pump which was upgraded to Vespel® CR-6100 with the PERF-Seal™ design The holes drilled in the PERF-Seal™ create a turbulence Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Recommended reading from the 32nd Pump Users Symposium, 2016 A Short Break In recent weeks, we have discussed how an upgrade to composite wear rings allows you to avoid pump seizure, and therefore reduce the wear ring clearance in your pump. This reduction in clearance increases the Lomakin Effect in the pump and improves pump efficiency. One thing we Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • We just completed our series on upgrading pumps with DuPont™ Vespel® CR-6100, getting into details on how to upgrade various horizontal and vertical pump types. We discussed reducing the clearance of the wear rings, upgrading throttle bushings with the PERF-Seal design, and upgrading vertically suspended pump shaft bearings. Today, let’s try to condense it all down into Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Part 10: Vertically Suspended Pump Installation Tips Review We have discussed how upgrading your pumps with Vespel® CR-6100 helps to eliminate pump seizures, allowing you to reduce wear ring clearance, which improves pump efficiency and improves pump reliability by increasing the Lomakin Effect in the pump. Quality repair and installation practices are an essential counterpart Read the full articl...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Part 9: Vertically Suspended Pumps with Separate Discharge (API Type VS4) Review Last week, we looked at vertically suspended pumps with the discharge through the column. This week, we take a look at vertically suspended pumps with a separate discharge (API Type VS4). Vertically suspended pumps with separate discharge are generally used for sump pumps Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Part 8: Vertically Suspended Pumps (API Types VS1–3, VS6, VS7) Review To date, we have addressed how to install DuPont™ Vespel® CR-6100 into the various horizontal pump types to eliminate metal-to-metal contact points in the pump and minimize the risk of pump seizure. This allows a reduction of clearance which improves efficiency and rotor stability. This segment will discuss Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Part 7: Between Bearings, Radially Split Pumps (API Types BB2, BB4, and BB5) Review DuPont™ Vespel® CR-6100 is a composite material which is used for the stationary wear parts of your pump and can be used in nearly all process chemicals from cryogenic temperatures to 500 F (260 C). The upgrade to Vespel® CR-6100 wear parts Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
YouTube Video
  • This animation shows placement of wear rings made from Dupont™ Vespel® CR-6100. The clearance at pump components such as wear rings, line shaft bearings, and throat bushings has a big impact on pump reliability? The unique properties of Vespel® CR 6100 allow these components to be installed with reduced clearance compared to API standard recommendations. When clearance is reduced using Vespel® ...

Boulden Company,Inc.
Boulden Company,Inc.
YouTube Video
  • This animation illustrates placement of wear rings machined from DuPont™ Vespel® CR-6100 in an API 610 (BB1) Axially Split, Double Suction, Single Stage Pump. Vespel® CR-6100 provides: • Protection from pump run dry events • Increased centrifugal pump efficiency • Increased rotor stability and reduced pump vibration* • Increased mechanical seal reliability* • Ease of machining and installation • T...

Boulden Company,Inc.
Boulden Company,Inc.
YouTube Video
  • This animation illustrates placement of wear rings machined from DuPont™ Vespel® CR-6100 in an API 610 (OH2) Centerline Mounted Pump. Vespel® CR-6100 provides: • Protection from pump run dry events • Increased centrifugal pump efficiency • Increased rotor stability and reduced pump vibration* • Increased mechanical seal reliability* • Ease of machining and installation • Temperature capabilities f...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Part 6: Between Bearings, Axially Split Pumps Review DuPont™ Vespel® CR-6100 is a composite material which is used for the stationary wear parts of your pump and can be used in nearly all process chemicals from cryogenic temperatures to 500 F (260 C). Upgrading your pumps with Vespel® CR-6100 wear parts allows you to eliminate the Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Part 5: Upgrading overhung pump types with DuPont™ Vespel® CR-6100. Review So far, we have discussed how upgrading your pumps with composite wear parts can help avoid galling and seizing, which allows you to reduce the clearance in your pump. This small change increases the Lomakin Effect and makes your pump more reliable. Reduced clearance Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Recommended reading from the 32nd Pump Users Symposium, 2016 A Short Break In recent weeks, we have discussed how an upgrade to composite wear rings allows you to avoid pump seizure, and therefore reduce the wear ring clearance in your pump. This reduction in clearance increases the Lomakin Effect in the pump and improves pump Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Part 4: Which services, which machines, which parts to upgrade? Review In the first part of this series, we discussed how upgrading your pumps with composite wear parts can help avoid galling and seizing, even when a pump runs dry. Because composite parts do not gall or seize like metal parts, this allows you to Read the full article...

Boulden Company,Inc.
Boulden Company,Inc.
Blog Post
  • Part 2: Reduce Clearance–The Lomakin Effect Welcome back to our series on upgrading pumps with composite materials. In part 1, we discussed how using composite materials like Vespel® CR-6100 in your pumps allows you to eliminate the metal-to-metal contact points in the pump and minimize the risk of pump seizure: In the shop during assembly Read the full article...

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