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37-1Valtek No. 35190

Valtek Valdisk 150

Control Valves

NOTE: Selecting the proper fastener material is the

responsibility of the customer. Typically, the supplier

does not know what the valve service conditions or

environment may be. Valtek‘s standard bolting material

is B7/2H. B8 (stainless steel) is optional for applications

above 800

F and with stainless steel or alloy body

valves. The customer therefore must consider the

material’s resistance to stress corrosion cracking in

addition to general corrosion. As with any mechanical

equipment, periodic inspection and maintenance is

required. For more information about fastener materi-

als, contact your local Valtek representative or factory.

Unpacking

1. While unpacking the valve, check the packing list

against the materials received. Lists describing the

valve and accessories are included in each shipping

container.

2. When lifting the valve from the shipping container,

position lifting straps to avoid damage to tubing and

mounted accessories. Most Valdisk 150 valves

may be lifted by the actuator lifting ring. If no lifting

ring is provided, lift the valve using lifting straps or

hook through the yoke legs and outer end of the

body.

3. In the event of shipping damage, contact your ship-

per immediately.

4. Should any problem arise, contact your Valtek rep-

resentative.

GENERAL INFORMATION

The following instructions are designed to assist in

unpacking, installing, operating and performing mainte-

nance as required on Valdisk 150 butterfly valves.

Product users and maintenance personnel should thor-

oughly review this bulletin prior to working on the valve.

Separate maintenance instructions cover additional fea-

tures (such as positioners, special accessories, fail-

safe systems,etc.)

This publication does not contain information on install-

ing, maintaining, troubleshooting, calibrating, and oper-

ating Valtek actuators or positioners. Refer to the

appropriate Valtek Installation, Operation, Maintenance

Instructions when this information is required.

To avoid possible injury to personnel or damage

to valve parts, WARNING and CAUTION notes

must be strictly adhered to. Modifying this prod-

uct, substituting nonfactory parts, or using

maintenance procedures other than outlined

could drastically affect performance, be hazard-

ous to personnel and equipment, and may void

existing warranties.

WARNING: Standard industry safety practices must

be adhered to when working on this, or any other,

process control product. Specifically, personal

protective and lifting devices must be used as war-

ranted.

1 2 3 4 5 6 7 8

Indice de contenidos

Pagina 1 - Control Valves

37-1Valtek No. 35190Valtek Valdisk 150Control ValvesNOTE: Selecting the proper fastener material is theresponsibility of the customer. Typically, the

Pagina 2 - Installation

37-2TABLE I:Flange Bolting Torques* (Class 150) Torque Values(ft-lbs) (newton-meter)2, 3, 4 118 1606, 8 209 28210, 12 337 455* For intermediate str

Pagina 3 - Figure 1: Body Assembly

37-3Body Packing Retainer (Item No. 85) Packing (Item No. 88) Shaft (Item No. 51)Packing Box Nut (Item No. 117)Gland Flange (It

Pagina 4 - DISASSEMBLY AND REASSEMBLY

37-4Figure 2: Typical Packing Configuration4. Slide the valve carefully from the line. To avoiddamage to gasket surfaces, do not twist the valve.5. A

Pagina 5 - Reassembling the Body

37-5Disassembling the BodyTo disassemble the Valdisk 150 body, refer to Figures1 and 3 and proceed as follows:1. Lay the valve body on a flat surface

Pagina 6 - Remounting Valve to Actuator

37-615. Rotate disc several times to allow seat to self-cen-ter in the body. Again, check packing box nuts to becertain they are tight, per step numbe

Pagina 7

37-7Failure Probable Cause Corrective ActionValve moves to failure 1. Failure of actuator O-ring 1. Replace actuator stem O-ringposition, excessive ai

Pagina 8

Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, thisFlowserve produc

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Flowserve BX 150 Manual de usuario

Busca en linea o descarga Manual de usuario para Hardware Flowserve BX 150. Flowserve BX 150 User Manual Manual de usuario

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