Demco DM Gate Valve Repair Kit, 4″ — 5,000 & 7,500 psi

Repair kits for 4″ Demco DM mud gate valves. The minor kit holds the parts that wear in normal service; the major kit adds everything replaced at a full overhaul. Both rebuild the valve in the line — the bonnet comes off without cutting the valve out. We supply new parts: genuine Cameron (Demco) where you need OEM, or interchangeable aftermarket parts made to the same dimensions — say which on the RFQ.

Kits we have photographed at this size

What is in each kit

DM 7500 minor kit: gate, seat insert, two body wear rings with their wear ring seals, bonnet seal and gate clip. DM 7500 major kit: the minor kit plus stem, stem vee packing with bushing, stem screw with bearings, secondary seal and housing seal. Some aftermarket minor kits add the stem packing; we list the contents on the quotation.

DM 2000–5000 minor kit: seat assembly, gate and bonnet seal. DM 2000–5000 major kit: the minor kit plus the stem seals — stem screw seal, secondary seal and stem seal assembly. The J025216-13221 kit we photographed also carries a stem and stem screw housing.

4″ DM 7500 kit parts and numbers

The 4″ DM 7500 kits are J025177-00474 (minor) and J025177-10474 (major). Numbers are as published in an interchangeable-parts bill of materials; we confirm them against your valve on the quotation.

The minimum bore through a 4″ DM 7500 valve (wear ring ID) is 3.97 in, per Cameron's DM 7500 manual.

Also for 4″ DM valves

• Mud Gate Valve, 4″, 7,500 psi — complete valves at this size and rating
• Demco DM 7500 Gate Valve Gate, 4″
• Demco DM Gate Valve Seat Assembly, 4″, 2,000–5,000 psi

Ordering

Give the valve size, series (DM 2000–5000 or DM 7500), trim and elastomer on your RFQ, with the Cameron part number or the number stamped on the old part if you have it, and whether you need OEM or interchangeable parts. We confirm lead time and documentation on the quotation.