Agilent water-cooled Halo Baffles provide nearly twice the speed at the pump inlet as that achieved with other baffles. They do not add any height to the system. These baffles are very economical and decrease backstreaming and outgassing.

Agilent extended Cold Cap is an option that fits inside the VHS-4, VHS-6 and VHS-10 pumps. It replaces the standard cold cap to reduce backstreaming, yet it retains 80% of the pump's speed.

Extended Cold Caps and Halo Baffles decrease backstreaming and outgassing
Halo Baffles provide nearly twice the speed at the pump inlet compared to other baffles and are very economical
Cold Caps retain 80% of the pump's speed
Extended Cold Caps and Halo Baffles fit inside pumps, adding no height to system

Part Number Variant

622445026 Cold cap female coupling, 1/2” OD tube x 3/8” FPT, Imperial Flexfitting No. 66-FL, for HS-16, HS-20, HS-32, NHS-35 diffusion pumps
L8839301 Cold cap gasket kit, for HS-16, HS-20, HS-32, NHS-35 cold cap, 1 package of 4 pieces
81437301 Cold cap, for NHS-35 diffusion pump
K4823301 Cold cap, for VHS-400 diffusion pump
624301111 Cooling water adapter, 3/8” male NPT to ½” barbed hose fitting
L8917301 Extended cold cap, for VHS-10 diffusion pump
F6898301 Extended cold cap, for VHS-4 diffusion pump
F6455001 Extended cold cap, for VHS-6 diffusion pump
X3900-67000 Extension foreline baffle, ISO flange, for HS-32 diffusion pump
80798301 Foreline baffle, for HS-16 diffusion pump
84166301 Foreline baffle, for HS-2 diffusion pump
84889301 Foreline baffle, for HS-20 diffusion pump
F1744301 Foreline baffle, for NHS-35 diffusion pump
F0431301 Foreline baffle, for VHS-10 and VHS-400 diffusion pumps
86754301 Foreline baffle, for VHS-4 diffusion pump
L9172301 Foreline baffle, for VHS-6 and VHS-250 diffusion pumps
K0143316 Halo baffle, for HS-16 diffusion pump
K1855320 Halo baffle, for HS-20 diffusion pump
K1856332 Halo baffle, for HS-32 diffusion pump
K1857335 Halo baffle, for NHS-35 diffusion pump
R1160065 Inlet baffle retrofit kit, for AX-65 diffusion pump
L8840301 Nut and Follower kit, for cold cap, 2/pk
642906050 Resistance thermometer PT100, M8 connection, for diffusion pump oil temperature measurement
F0429301 Standard cold cap, for VHS-10 diffusion pump
X3900-68009 Water fitting convertor 1/4 to G1/2 for HS-16 and HS-20 diffusion pumps
X3900-68011 Water fitting convertor 3/8 to G1/2 for HS-32 and NHS-35 diffusion pumps

New, factory warranted pumps available.

Price: POA, please contact us for latest prices

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Replacement Baffles, Water Fittings & Cold Caps for Diffusion Pumps

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Replacement Baffles, Water Fittings & Cold Caps for Diffusion Pumps