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Old 05-16-2016, 09:50 AM   #14
HopCar
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City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 5,307
The use of zerk fittings is something new for Groco. Until recently they have discouraged it but now they are shipping their ball valves and seacocks with zerk fittings installed. In the past they were worried you could build enough pressure to blow out the seals. Since the BV series has two drain holes, all you have to do is remove the plug opposite the zerk, pump it full of grease and the excess grease will just come out the other drain hole. Be sure the seacock is in the open position or you'll just fill the water passage with grease instead of getting it on the outside of the ball.

On valves with single drain holes you need to partially close the valve so excess grease can go into the water passage and not over pressure the seals.
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Parks Masterson
Retired from Hopkins-Carter Marine Supply
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