Flowserve Valdisk 150 Installation, Operation, &  Maintenance Instruction
Flowserve Valdisk 150 Installation, Operation, &  Maintenance Instruction

Flowserve Valdisk 150 Installation, Operation, & Maintenance Instruction

Control valves

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Valdisk 150
Control Valves
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.
protective and lifting devices must be used as war-
ranted.
Orig. 5/97
Valtek No. 35190
Specifically, personal
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. ValtekÔs standard bolting material
is B7/2H. B8 (stainless steel) is optional for applications
O
above 800
F and with stainless steel or alloy body
valves. The customer therefore must consider the
materialÕs 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.
37-1

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Summary of Contents for Flowserve Valdisk 150

  • Page 1 ValtekÔs standard bolting material nance as required on Valdisk 150 butterfly valves. is B7/2H. B8 (stainless steel) is optional for applications Product users and maintenance personnel should thor-...
  • Page 2: Installation

    CAUTION: Do not overtighten packing. This can cause excessive packing wear and high shaft CAUTION: Because of Valdisk 150’s self-cen- friction, which may impede shaft rotation. tering seat, there is no reason to open the After the valve has been in operation for a short time, valve at any time during installation.
  • Page 3 Disc (Item No. 50) Packing Retainer (Item No. 85) Thrust Packing (Item No. 88) Taper Pin Washer (Item No. 52) (Item No. 82) Shaft (Item No. 51) Packing Box Nut (Item No. 117) Gland Flange (Item No. 80) Packing Box Stud (Item No.
  • Page 4: Disassembly And Reassembly

    Standard Square Standard Single "V" Twin "V" Twin "V" with Lubricator SafeGuard SureGuard SafeGuard / SureGuard (packing studs rotated 45 degrees) Fire-safe Option (live-loading omitted) Figure 2: Typical Packing Configuration DISASSEMBLY AND REASSEMBLY 4. Slide the valve carefully from the line. To avoid damage to gasket surfaces, do not twist the valve.
  • Page 5 Disassembling the Body 6. Place the disc into the body from the backside with the taper pin slot on top. Do not dislodge the thrust To disassemble the Valdisk 150 body, refer to Figures bearing. 1 and 3 and proceed as follows: 7.
  • Page 6 Remounting Valve to Actuator shaft may be twisted or sheared off. Before mounting a Valdisk 150 valve to a Valtek actua- tor, verify that the disc rotation matches the actuator 4. Install the valve in line as outlined in the “Installa- rotation and complies with the air failure requirements.
  • Page 7 Troubleshooting Valdisk 150 Valves Failure Probable Cause Corrective Action Valve moves to failure 1. Failure of actuator O-ring 1. Replace actuator stem O-ring position, excessive air 2. Failure of sliding seal assembly 2. Repair or replace sliding seal assembly bleeding from transfer case Jerky shaft rotation 1.
  • Page 8 Flowserve Corporation has established industry leadership in the design and manufacture of its products. When properly selected, this Flowserve product is designed to perform its intended function safely during its useful life. However, the purchaser or user of Flowserve products should be aware that Flowserve products might be used in numerous applications under a wide variety of industrial service conditions.

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