High throughput pumps nHT

  • Description
  • Specification
  • Application
  • nHT10
  • nHT16
  • nHT20
  • nHT32
  • nHT35

Description

The nHT high throughput series is the pinnacle of our diffusion pump knowledge with technology aimed specifically at industrial users. Edwards diffusion pump is designed for all light and heavy duty industrial applications. The robust construction gives high pumping speed at high pressure. The cast and machined aluminium interior provides consistent performance, while the stainless steel body prevents corrosion and ensures process cleanliness. These pumps are designed to give a high throughput (pressure multiplied by pumping speed) at 4 × 10‑3 mbar making them ideal for industrial processes that involve large quantities of gases.

Specification

• Highest throughput of comparative sized pumps.
• Earliest crossover pressure of similar sized pumps.
• Excellent maximum backing line pressure and tolerance to gas surges.
• Comparative pumping speed to similar sized pumps.
• Integral cold cap for best performance and low back streaming.
• Self fractionating for low ultimate pressures.
• Easy change heater assembly.

Application

• Vacuum metallurgy.
• Distillation, drying and degassing.
• Thin film coating and metalising.
• Large‑scale research.

nHT10

ANSIISO
Inlet connection10˝ ANSI320 ISO-K
Backing connection2˝ ANSI63 ISO-K
Pumping speed* Nitrogen <10-4 mbarl/s3000
Pumping speed Argon <10-4 mbarl/s2750
Pumping speed Helium <10-4 mbarl/s4500
Gas Throughputmbar l/s8
Operating rangembar10-1 to 10-7
Ultimate pressure (Edwards 704)mbar< 5 x 10-7
Critical backing pressure (Edwards 704)mbar5 x 10-1
Heating powerkW3,6
Heating cartridgesqty3
Warm-up periodmin< 15
Weightkg105
Recommended oilEdwards 704
Oill3,0 – 4,0
Recommended holding pumpE2M40
Recommended backing pumpE2M80, GV80

 

nHT16

ANSIISO
Inlet connection16˝ ANSI500 ISO-K
Backing connection3˝ ANSI100 ISO-K
Pumping speed* Nitrogen <10-4 mbarl/s6800
Pumping speed Argon <10-4 mbarl/s6350
Pumping speed Helium <10-4 mbarl/s9500
Gas Throughputmbar l/s11
Operating rangembar10-1 to 10-7
Ultimate pressure (Edwards 704)mbar< 5 x 10-7
Critical backing pressure (Edwards 704)mbar5 x 10-1
Heating powerkW7,2
Heating cartridgesqty6
Warm-up periodmin< 15
Weightkg185
Recommended oilEdwards 704
Oill3,5 – 4,5
Recommended holding pumpE2M40
Recommended backing pumpE2M175, EDS200

 

nHT20

ANSIISO
Inlet connection20˝ ANSI630 ISO-K
Backing connection4˝ ANSI160 ISO-K
Pumping speed* Nitrogen <10-4 mbarl/s10000
Pumping speed Argon <10-4 mbarl/s9000
Pumping speed Helium <10-4 mbarl/s17000
Gas Throughputmbar l/s17
Operating rangembar10-1 to 10-7
Ultimate pressure (Edwards 704)mbar< 5 x 10-7
Critical backing pressure (Edwards 704)mbar5 x 10-1
Heating powerkW10,8
Heating cartridgesqty9
Warm-up periodmin< 25
Weightkg210
Recommended oilEdwards 704
Oill5,5 – 7,0
Recommended holding pumpE2M80
Recommended backing pumpE2M175, EDS200

nHT32

nHT32
ANSIISO
Inlet connection32” ANSI800 ISO-F
Backing connection6” ANSI200 ISO-K
Pumping speed* Nitrogen <10-4 mbarl/s21000
Pumping speed Argon <10-4 mbarl/s18000
Pumping speed Helium <10-4 mbarl/s30000
Gas throughputmbar  l/s36
Operating rangembar<10‐2 to 10‐7
Ultimate pressure (Edwards 704)mbar< 10‐6
Critical backing pressure (Edwards 704)mbar5 x 10-1
Heating powerkW21,6
Heating cartridgesqty18
Warm-up periodmin< 25
Weight570
Recommended oilEdwards 704
Oill9,0 – 11,0
Recommended holding pumpE2M80
Recommended backing pumpnES630, E2M275, GXS450, EH2600

 

nHT35

ANSIISO
Inlet connection35˝ ANSI1000 ISO-K
Backing connection6˝ ANSI200 ISO-K
Pumping speed* Nitrogen <10-4 mbarl/s30000
Pumping speed Argon <10-4 mbarl/s26000
Pumping speed Helium <10-4 mbarl/s42000
Gas Throughputmbar l/s36
Operating rangembar10-1 to 10-7
Ultimate pressure (Edwards 704)mbar< 10-6
Critical backing pressure (Edwards 704)mbar5 x 10-1
Heating powerkW21,6
Heating cartridgesqty18
Warm-up periodmin< 25
Weightkg720
Recommended oilEdwards 704
Oill9,0 – 11,0
Recommended holding pumpE2M80
Recommended backing pumpE2M275, EDS300