sump valved down pipe

Hi Y'all I need some advice on upgrading the red sea Reefer 350 Sump Valved Down Pipe. The stock pipe is 32mm - metric size. I jumped ahead of myself & ended up buying 1 1/4 inch pipe, Spears Gate Valve & Cepex Ball Valve. I need to connect this 32mm pipe to my upgraded stuff. But I can only...