Bray 950 Series User manual

SERIES 950

UNIDIRECTIONAL KNIFE GATE VALVES

Installation, Operation and Maintenance Manual

BRAY.COM THE HIGH PERFORMANCE COMPANY

SERIES 950 UNIDIRECTIONAL KNIFE GATE VALVE

Installation, Operation and Maintenance Manual

herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its

proprietary nature without the express written permission of Bray International, Inc.

2 of 22

TABLE OF CONTENTS

1.0 Deﬁnition of Terms 3

2.0 Hazard Free Use 3

3.0 Introduction 4

4.0 Parts Identiﬁcation 5

5.0 Valve Identiﬁcation 6

6.0 Lifting The Valve 7

7.0 Storage 8

8.0 Installation 11

9.0 Lockout 14

10.0 Maintenance 15

11.0 Packing Replacement | Manual Valves 15

12.0 Packing Replacement | Cylinder Operated Valves 16

13.0 Seat Replacement 18

14.0 Retro Fitting Cylinder Actuator 19

15.0 Troubleshooting 20

16.0 Return Merchandise Authorization 21

SERIES 950 UNIDIRECTIONAL KNIFE GATE VALVE

Installation, Operation and Maintenance Manual

herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its

proprietary nature without the express written permission of Bray International, Inc.

3 of 22

0.00 Identiﬁes and explains sequential procedure to be performed.

NOTE: Provides important information related to a procedure.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, may

result in injury.

NOTICE

Used without the safety alert symbol, indicates a potential situation

which, if not avoided, may result in an undesirable result or state,

including property damage.

WARNING

Indicates a potentially hazardous situation which, if not avoided, could

result in death or injury.

1.0 DEFINITION OF TERMS

READ AND FOLLOW THESE INSTRUCTIONS CAREFULLY.

SAVE THIS MANUAL FOR LATER USE.

2.0 HAZARD-FREE USE

2.1 This device left the factory in proper condition to be safely

installed and operated in a hazard-free manner. The notes and

warnings in this document must be observed by the user if this

safe condition is to be maintained and hazard-free operation of the

device assured.

2.2 Take all necessary precautions to prevent damage to the valve

due to rough handling, impact, or improper storage. Do not use

abrasive compounds to clean the valve, or scrape metal surfaces

with any objects

2.3 The control systems in which the valve is installed must have

proper safeguards to prevent injury to personnel, or damage to

equipment, should failure of system components occur.

SERIES 950 UNIDIRECTIONAL KNIFE GATE VALVE

Installation, Operation and Maintenance Manual

herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its

proprietary nature without the express written permission of Bray International, Inc.

4 of 22

2.4 QUALIFIED PERSONNEL

2.4.1 A qualiﬁed person in terms of this document is one who is familiar

with the installation, commissioning, and operation of the device

and who has appropriate qualiﬁcations, such as:

2.4.1.1 Is trained in the operation and maintenance of electrical equipment

and systems in accordance with established safety practices.

2.4.1.2 Is trained or authorized to energize, de-energize, ground, tag, and

lock electrical circuits and equipment in accordance with established

safety practices.

2.4.1.3 Is trained in the proper use and care of personal protective

equipment (PPE) in accordance with established safety practices.

2.4.1.4 In cases where the device is installed in a potentially explosive

(hazardous) location – is trained in the commissioning, operation,

and maintenance of equipment in hazardous locations.

2.5 Additional information about Series 950 Unidirectional Knife Gate

Valve — including application data, engineering speciﬁcations, and

actuator selection — is available from your local Bray distributor or

sales representative.

3.0 INTRODUCTION

3.1 The Bray Series 950’s single piece, cast body design offers

rugged performance in applications ranging from general

purpose to severe media handling in an economical semi-lug

body. Available with integral metal or replaceable soft seat, the

Bray Series 950 knife gate valve is easily automated for on/off

applications.

SERIES 950 UNIDIRECTIONAL KNIFE GATE VALVE

Installation, Operation and Maintenance Manual

herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its

proprietary nature without the express written permission of Bray International, Inc.

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Item Description

1 Body

2Gate

3 Packing Set

4 Gland

5 Gland Bolt

6 Gland Washer

7 Gland Nut

8 Side Plate

9 Mounting Bolt (Top)

10 Mounting Nut (Top)

11 Mounting Nut (Bottom)

12 Spring Washer

13 Clevis

14 Stem

15 Clevis Bolt

16 Clevis Nut

17 Collar

18 Yoke Sleeve

19 Grease Nipple

20 Thrust Washer

21 Hand Wheel

22 Socket Screw

23 Seat1

4.0 PARTS IDENTIFICATION

Figure 1: Series 950 Exploded View

NOTE

1 Optional replaceable resilient seat.

SERIES 950 UNIDIRECTIONAL KNIFE GATE VALVE

Installation, Operation and Maintenance Manual

herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its

proprietary nature without the express written permission of Bray International, Inc.

6 of 22

5.0 VALVE IDENTIFICATION

5.1 Valve size and brief material speciﬁcation of body (markings such

as “SS” or “DI”) are marked on the valve body.

5.2 A stainless steel nameplate (below) aﬃxed to the yoke of the

valve contains most of the relevant information on the valve that

includes a unique serial number of the valve.

NOTE: Please reference the valves serial number when inquiring

for spare parts.

5.3 All Series 950 Knife Gate valves are provided with an identiﬁcation

tag (Figure 2) printed with the following data:

>SERIAL NUMBER: Unique serial number of valve.

>SIZE: Valve size e.g. 6 in/150 mm.

>MODEL: Series number of the valve.

>FLG. DRILL: Flange Drill e.g. ASME B16.5 CL150.

>BODY: Material grade of body e.g. CF8 (304) etc.

>GATE: Material grade of gate e.g. 304 Stainless Steel.

>SEAT: Material of seat e.g. Buna-N.

>PACKING: Material of packing e.g. PTFE w/EPDM Quad Seal.

>CWP: Maximum permissible pressure in psi/bar(g)

>MAX TEMP: Maximum temperature in °F/°C

SERIAL NUMBER

SEAT PACKING CWP MAX TEMP

MODEL FLG. DRILL BODY GATE

SIZE

Figure 2: Identiﬁcation tag.

NOTICE

Ensure the box is not damaged externally. Remove the valve from the

packaging and check for any damage to the valve and its components

during transit. Report any damage or discrepancies immediately.

SERIES 950 UNIDIRECTIONAL KNIFE GATE VALVE

Installation, Operation and Maintenance Manual

herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its

proprietary nature without the express written permission of Bray International, Inc.

7 of 22

6.1 The points below are for reference purposes only, use safe and

proper lifting and support techniques. DO NOT lift valves with

any adjoining pipe or other equipment attached. Lift with

properly rated lifting equipment. Follow jurisdictional safety

requirements.

6.2 Suggested lifting points are as shown below to lift valve assemblies

that are in a horizontal orientation. Eye bolts in ﬂange through

holes can be used to lift the valve body or, for 2” through 12”

valves, a sling can be strapped around the top of the valve body.

6.3 KNIFE GATE VALVE WITH BEVEL GEAR ACTUATOR:

For valves with bevel gear actuators, a sling or chain can be

wrapped around the bevel gear actuator body, between the

mounting plate and the input shaft housing. This would be in

conjunction with lifting from the valve body as well. See Figure 3.

Figure 3: Knife Gate Valve with Bevel Gear Actuator,

Horizontal Lifting

6.4 KNIFE GATE VALVE WITH PNEUMATIC CYLINDER ACTUATOR:

For valves with pneumatic cylinder actuators, a sling can be

wrapped around the cylinder, near the cylinder head (piston rod

end). This would be in conjunction with lifting from the valve body.

See Figure 4.

6.4.1 Utilize caution to not bump, dent or damage the cylinder tube.

6.4.2 DO NOT utilize the cylinder tie-rod ends to lift.

Figure 4: Knife Gate Valve with Pneumatic Cylinder Actuator,

Horizontal Lifting

6.0 LIFTING THE VALVE

WARNING

A potential hazard exists with handling valves. Failure to handle valves

properly may cause a valve to shift, slip or fall causing serious injury or

death and/or equipment damage.

SERIES 950 UNIDIRECTIONAL KNIFE GATE VALVE

Installation, Operation and Maintenance Manual

herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its

proprietary nature without the express written permission of Bray International, Inc.

8 of 22

Figure 8: Knife Gate Valve with

Handwheel, Vertical Lifting

Figure 7: Knife Gate Valve with

Pneumatic Cylinder Actuator,

Vertical Lifting

Figure 6: Knife Gate Valve w/Bevel

Gear Actuator, Vertical Lifting

6.5 KNIFE GATE VALVE WITH HANDWHEEL ACTUATOR:

For valves with handwheel actuators, a sling or chain can be

wrapped through the rim of the handwheel. For chainwheel

actuators, a sling can be wrapped in the area between the yoke/

legs and the chainwheel/guide assembly. This would be in

conjunction with lifting from the valve body as well. See Figure 5.

Figure 5: Knife Gate Valve with Handwheel, Horizontal Lifting

6.6 Suggested lifting options are as shown below to lift valve

assemblies that are in a vertical orientation. For valves with bevel

gear actuators, wrap slings or chains around the top of each leg.

NOTE: Use caution not to put any side load on the bevel gear input

shaft or on the valves threaded stem. See Figure 6.

6.7 For valves with pneumatic cylinder actuators, wrap slings around

the top of each leg. Use caution to not bump, dent or damage the

cylinder tube and avoid any side load on the cylinder piston rod.

NOTE: DO NOT utilize the cylinder tie-rod ends to lift. See Figure 7.

6.8 For valves with handwheel or chainwheel actuators, wrap slings or

chains around the top of the each leg or yoke side.

NOTE: Use caution to not put any side load on the valves threaded

stem. See Figure 8.

7.0 STORAGE

7.1 Short term storage is deﬁned as storage of valves to allow for

project construction and will be installed within a relatively short

amount of time, typically one to three months. During Short-term

storage, the following is required:

7.1.1 The preferred storage location is a clean, dry, protected

warehouse. Do not expose the valve to temperature extremes.

NOTICE

The packaging is designed to protect the valve only during shipping. If

you are not installing the valve immediately after delivery, then you must

store it according to these requirements.

SERIES 950 UNIDIRECTIONAL KNIFE GATE VALVE

Installation, Operation and Maintenance Manual

herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its

proprietary nature without the express written permission of Bray International, Inc.

9 of 22

7.1.2 End protectors shall remain on the valve ends to prevent the

entrance of dirt, debris, or insects/wildlife.

7.1.3 Remain in the original shipping container with the original

packaging materials. This packaging method will not protect

valves that will be stored outside, uncovered, and unprotected.

7.1.4 Storage of valves in an open uncovered area is permissible but

requires provisions for inclement weather including a secure

waterproof tarp and must be elevated from the ground on a pallet,

a shelf or other suitable surface.

7.1.5 Do not stack the valves on top of each other.

7.1.6 Manual actuated valves may be stored in the vertical or horizontal

position. For air or hydraulic actuated valves, the preferred

orientation is with the valve and cylinder in the vertical position.

Access ports should be secured to prevent unauthorized entry and

prevent contamination.

7.2 Long term storage is deﬁned as storage of valves longer than 3

months. During Long-term storage, the following is required:

7.2.1 The storage location shall be a clean, dry, protected warehouse. Do

not expose the valve to temperature extremes.

7.2.2 End protectors shall remain on the valve ends to prevent the

entrance of dirt, debris, or insects/wildlife.

7.2.3 Remain in the original shipping container with the original

packaging materials.

7.2.4 Do not stack the valves on top of each other.

7.2.5 Manual actuated valves may be stored in the vertical or horizontal

position. For air or hydraulic actuated valves, the preferred

orientation is with the valve and cylinder in the vertical position.

Access ports should be secured to prevent unauthorized entry and

prevent contamination.

7.2.6 Valves and equipment containing elastomers, including O-rings,

must be stored in a climate-controlled warehouse according to

SAE-ARP5316D requiring:

- The ambient relative humidity to be less than 75%

- No exposure from direct ultraviolet or sunlight

- Protected from ozone generating equipment or combustible

gases and vapors

- Must be stored at temperatures below 100°F (38°C), away

from direct sources of heat

- Not be exposed to ionizing radiation

SERIES 950 UNIDIRECTIONAL KNIFE GATE VALVE

Installation, Operation and Maintenance Manual

herein shall not be copied, transferred, conveyed, or displayed in any manner that would violate its

proprietary nature without the express written permission of Bray International, Inc.

10 of 22

7.2.7 Storage inspection: visual inspection shall be performed on a

semiannual basis and results recorded. Inspection as a minimum

shall include reviewing the following:

- Packaging

- Flange covers

- Dryness

- Cleanliness

7.3 Actuators to be stored with all cable/pneumatic entries plug to

prevent entry of foreign material.

7.4 Do NOT stack the valves on top of each other.

7.5 Leave protective caps and covers on the product.

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