Service Manual

BRAY Resilient Seated BFV

Operation and Maintenance Manual

Appendix C

Disassembly/Assembly Instructions

Series 30/31 Resilient Seated Buttery Valves

Disassembly –

1. Remove the handle, gear operator, or power actuator from actuator mounting ange.

2. Remove the “Spirolox”® retaining ring and the two C-ring stem retainers from the stem hole.

3. Then remove the stem, bushing and seal.

4. Remove the disc from the seat, protecting the disc edge at all times.

5. Push the seat into an oval shape, and then remove the seat from the body.

Assembly –

1. Push the valve seat into an oval and push it into the body with seat stem holes aligned to body stem

holes.

NOTICE

When installing the seat the larger hole should be on top and the smaller hole

should be on bottom.

2. Insert stem seal and bushing.

3. Push stem into the stem hole of the body until the bottom of the stem is ush with the inner top edge

of the seat.

4. Install a light coating of silicone or grease on the I.D. of seat. Insert the disc into the seat by

lining up the disc holes with the stem holes of the seat.

Note: The broached double “D” ats in the disc must be toward the bottom of the valve body.

5. With a downward pressure and rotating the stem back and forth, push the stem until the stem touches

the bottom of the body stem hole.

6. Make certain that when pushing the stem through the disc bottom, the broached ats of stem and

disc are aligned.

7. Replace the stem bushing and two stem retainers, then replace the “Spirolox”® retaining ring back

into position.

8. Replace handle, manual gear operator or power actuator on the actuator mounting ange.