DeZurik APCO CVS-250A 사용 설명서 - 페이지 4

{카테고리_이름} DeZurik APCO CVS-250A에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. DeZurik APCO CVS-250A 16 페이지. Swing check valves

DeZURIK

APCO CVS-250/250A Swing Check Valves

Description

A swing check valve consists of a valve body, a cover, and a disc that is connected to a hinge. The disc

swings away from the valve-seat to allow flow in the forward direction, and returns to valve-seat when

upstream flow is stopped, to prevent backflow. The valve is equipped with either a lever & weight, an air

cushion with lever & weight, or a lever & spring to assist with closing the valve.

Lifting the valve improperly may damage it. Do not fasten lifting devices to the lever arm actuator or

through the seat opening in the body. Lift the valve with slings, chains or cables fastened around the

valve body, or fastened to bolts or rods through bolt holes in the flanges.

If installation will be delayed, place valve indoors in secure, weather tight storage. If temporary outside

storage is unavoidable, make sure a vermin proof rain cover (water shedding tarp, etc.) is secured

around/over the equipment to keep off rain and mud. Skid and set the assembly on a flat, solid, and

well drained surface for protection from ground moisture, runoff and pooled rain water.

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The APCO CVS 250/250A Swing Check Valve may be installed in a horizontal or vertical

position (with the flow upward). In either case, the Counterweight Arm (B19) should be set in

horizontal position. Unless otherwise specified, the valves are shipped for horizontal installation.

o To change the counterweight arm position, loosen the Lever Arm Bolt Set Screw (B55),

slide the counterweight arm assembly off the Pivot Shaft (A13), rotate the counterweight

arm assembly and slide it back onto the Pivot Shaft (A13) using the appropriate keyway

shown in Figure 1. See Figure 2 for component identification.

D12003

Figure 1 – Counterweight Arm Position

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October 2018