Flowserve Handwheels and Limit Stop Manual de usuario descargar pdf

Valtek Auxiliary Handwheels

and Limit Stops

Table of Contents

Page

1 General information

2 Installation

2 Side-mounted handwheels, size 25 and 50

(linear actuators)

3 Side-mounted handwheels, size 100 and 200

(linear actuators)

6 Top-mounted, continuously connected hand-

wheels, Size 100 and 200 (linear actuators)

7 Top-mounted, push-only handwheels (linear

actuators)

9 Declutchable handwheels (rotary actuators)

11 Push-only limit stops (linear actuators)

11 Pull-only limit stops (linear actuators)

GENERAL INFORMATION

The following instructions are designed to assist in

installing, operating, performing maintenance and dis-

assembling handwheels and limit stops mounted on

Valtek spring cylinder actuators. Product users and

maintenance personnel should thoroughly review this

bulletin in conjunction with the Valtek Installation, Op-

eration, Maintenance Instructions for Cylinder Actua-

tors (IOM 2), prior to working on the handwheels and

limit stops.

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 non-factory parts, or using main-

tenance procedures other than outlined could

drastically affect performance, be hazardous 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

warranted.

Valtek control valves are often equipped with auxiliary

handwheels of the continuously connected or push-only

type, allowing for manual operation of the valve in case

of air failure. Continuously connected handwheels can

also be used as a limit stop to limit valve travel in either

the open or closed position. Push-only handwheels are

designed to close the valve or limit opening. Limit stops

limit the actuator stroke in one direction or the other.

INSTALLATION

Valtek control valves, equipped with auxiliary hand-

wheels and limit stops, are installed as outlined in the

maintenance bulletin for each type of valve. Refer to the

sales catalog or certified dimensional drawing for esti-

mated overhead clearance requirements. To allow for

manual operation and maintenance, adequate access

to the handwheel or limit stop must be provided.

SIDE-MOUNTED, CONTINUOUSLY

CONNECTED HANDWHEELS,

SIZE 25 AND 50 (Linear Actuators)

Operation

If air failure should occur, or if manual control of the

valve is desired, the side-mounted, continuously con-

nected handwheel can be operated as follows:

1. Set the three-way bypass valve (located on the

supply line to the positioner) to 'manual' to vent the

air pressure from the actuator.

NOTE: Three-way valves are installed in the supply

line only when there is no lock-up system or volume

tank. On volume tank or lock-in-place systems, the

1 2 3 4 5 6 ... 11 12

Indice de contenidos

Pagina 1 - Valtek Auxiliary Handwheels

Pagina 2

5-10 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 86112. Keep the handwheel mechanism free from dirt. Ifdirt begins to impair hand

Pagina 3

Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611 5-11PUSH-ONLY LIMIT STOPS(Linear Actuators Only)OperationThe push-only limit sto

Pagina 4

5-12 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611OC3. Readjust the jam nuts until they are seated next tothe limit stop flang

Pagina 5

5-2 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611bypass valve is located between the top and bottomcylinder ports.2. To open t

Pagina 6

Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611 5-3CAUTION: Avoid reattaching the handwheel as-sembly to the yoke while the actu

Pagina 7

5-4 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611WARNING: Failure to repressurize process lineand actuator to atmospheric pres

Pagina 8

Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611 5-5Retaining RingO-ring Retaining WasherUpper Actuator StemO-ringStem BushingHan

Pagina 9 - 8-inch in any one

5-6 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611NOTE: For correct neutral indication, it is importantto have the handwheel as

Pagina 10 - Reassembly

Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611 5-72. Remove the handwheel cap and the handwheel capextension.3. Loosen stem cla

Pagina 11

5-8 Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611maintain a coat of multi-purpose lubricant on the screwat all times. To do th

Pagina 12 - Maintenance

Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611 5-94. To open, turn the handwheel counter-clockwise.5. To close, turn the handwh

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