Flo-Tite F150 Installatie, bediening en onderhoud - Pagina 2

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VISUAL INSPECTION

Clean and inspect metal parts. It is not necessary to replace the ball and stem unless the seating surfaces have been damaged by

abrasion or corrosion. We strongly recommend replacement of all soft parts whenever the valve is disassembled for reconditioning.

This is the surest protection against subsequent leakage after valve assembly. The replacement parts can be ordered in kit form.

NOTE: the valve may be assembled and operated dry where no lubricants are allowed in the system; however, a light lubricant or

mating parts will aid in assembly and reduce initial opening torque. Lubricant used must be compatible with the

intended line fluid.

ASSEMBLY

Install one seat in the body cavity with the spherical curvature facing the ball.

Install thrust washer on stem and slide the stem up through the body.

Install packing and packing gland with packing gland bolts. Install stop plate, handle and handle retainer nut.

Turn the handle to the CLOSED position. Line up the ball slot with stem tang and slide the ball into position.

Turn the handle to the OPEN position to hold the ball in place. Install the remaining seat into body side.

Put body seal gasket into shoulder counter-bore at flange in valve body.

Put body end back into body and line up end flange.

Because the body flange bolt pattern is different from the line flange bolt pattern, it is possible to assemble the valve such that the

bolt holes in the line flanges don't line up. Be certain to align end flanges bolt holes to straddle valve center lines.

NOTE: be careful not to damage body seal when putting body end into body. Install body end nuts and tighten in a "star" pattern

to the torque specified below.

WARNING: extreme care must be exercised during adjustment of body end nuts to make sure that complete engagement of studs

with body flange is maintained. There should be at least one stud thread exposed on each side. Cycle the valve slowly, with a

gentle back and forth motion to build gradually to a full quarter turn. By cycling slowly, the seat lips will assume a permanent seal

shape against the ball. A fast turning motion, at this point, may cut the seats before they have a chance to form the proper seal.

Test valve, if possible, prior to placing valve back into line position.

WARNING: if not properly secured, the valve can separate from the pressure source, resulting in possible injury. Always join the

valve to companion flanges of same pressure rating as valve and secure with a full set of flange bolts.

WRENCH SIZE AND BOLT TORQUES

½" – 12mm wrench / 188 In Lbs

¾" – 12mm wrench / 188 In Lbs

1" – 14mm wrench / 290 In Lbs

1 ½" – 19mm wrench / 290 In Lbs

2" – 19mm wrench / 385 In Lbs

2 ½" – 7/8" wrench / 500 In Lbs

3" – 7/8" wrench / 500 In Lbs

4" – 7/8" wrench / 500 In Lbs

6" – 1 1/16" wrench / 1050 In Lbs

8" – 1 1/16" wrench / 1050 In Lbs

10" – 15/16" wrench / on application

12" – 15/16" wrench / on application