Seal Gard 32 and 54 Auxiliary Systems, Simplified... · 2019-10-07 · • Pressurized barrier...

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Seal Gard 32 and 54Auxiliary Systems, Simplified

Agenda, Seal Gards

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Purpose and

Benefit

Functionalityand

Features

Family of Products

Options and

AccessoriesCompetition

Summary, FAQs and Trouble-shooting

Dimensions,Part Numbers

andLead-times,

Purpose

Seal Gards provide a unitized, cost effect means of delivering cool, clean flush water to mechanical seals

• Key benefits

- Regulates flush flow rate

• Saves money

• Assures adequate flow for seal cooling

• Eliminates excessive flush rates which can cause seal face erosion

- Diagnostic instrumentation

• Includes flow and pressure gauges in order to visually check the seal’s operating environment

- Alarms

• Alerts control room of a loss of flush water so that immediate action can be taken to save the seal

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Water Consumption Benefit

Using even 7.5 LPM (2 GPM) more flush water than necessary can get expensive

Example:

• $0.0004/Gallon cost of water (Frequently up to 4x higher)

• 7.5 LPM (2 GPM) savings in seal flush flow

• Continuous flush whether equipment is running or not (525,600 minutes per year)

(0.0004)*(2)*(525,600) = $420 USD per year savings

Seal Gard regulates flush water usage to precisely what the seal needs, which saves water and money

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Seal Gard Families

4 Models

• Single Seals

- Seal Gard I (Launched 1994)

- Seal Gard 32 (Launched 2019)

• Can also be used for water quench (Plan 62)

• Dual Seals

- Seal Gard II (Launched 1994)

- Seal Gard 54 (Launched 2019)

• Single or Dual flowmeters available

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Seal Gard I

Seal Gard II

Seal Gard 32

Seal Gard 54

What

• Seal flush from an external, clean source

• Controllable flowrate

Why

• Seal chamber heat removal

• Process and solids removal from seal chamber

• Increase seal chamber pressure and fluid vapor margin

What is a Piping Plan 32?

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Fully Engineered Piping Plan 32

What

• Pressurized barrier fluid circulation by external system

• Usually has pressure gaugeand flow control devicelocal to the pump and seal

Why

• Isolate process fluid

• Zero process emissions

• Source fluid can be madeto have the necessary pressure, temperature, and flowrate to optimally supportthe mechanical seal

What is Piping Plan 54?

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Seal Gard Family Commonalities

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Seal Gard I Seal Gard 32 Seal Gard II Seal Gard 54Seal Arrangement Single Seals Dual SealsFlowmeter Yes Yes w/ indicator Yes Yes w/ indicatorsPressure Gauge 60 mm (2 ½ inch) glycerin filled 316ssFlow Control Valve YesCheck Valve StandardMetallurgy 316 SS

Elastomers Fluoroelastomer (FKM)

Seal Gard Family Differences

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Seal Gard I Seal Gard 32 Seal Gard II Seal Gard 54Seal Arrangement Single Seals Dual SealsFlowmeter Cleaning Port Plunger Port PlungerMaximum Flow LPM (GPM) 2.6 (0.65) 13 (3.5) 2.6 (0.65) 13 (3.5)Pressure Rating Bar (psig) 21 (300) 25 (362) 21 (300) 25 (362)Temperature Rating °C (°F) 66 (150) 100 (212)* 66 (150) 100 (212)*Standard Connection Size ¼” NPT 3/8” Tube ¼” NPT 3/8” TubeBody Material Acrylic POM Acrylic POMFlowmeter Tube Materials Acrylic PSU Acrylic PSU

*130°C (266°F) with optional PVDF Body

Seal Gard 32 Functionality (Single Seals)

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Clean Flush Water Source(Connect using 3/8 inch tubing) To Seal (Connect using 3/8 inch tubing)

Adjust indicator markto desired flowrate

Use plunger to clearflowmeter glass

(MUST be left all the way upin operation)

Adjust until top of flowmeter

float aligns with indicator mark

Note pressure, it will indicate a pressure slightly higher

than the actual seal chamber pressure

Seal Gard 32 Internal Flow Path

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Double O-ring wiper seals flowmeter tubewhen it is not in use

Flow bypasses clog resistant conical stainless float

Flush fluid inlet from pressurized source

Flush fluid to seal

Flow control valve operating region

Pressure gauge indicates seal chamber pressure plus

line losses from Seal Gard to the seal

Check valve preventing backflow into the

Seal Gard and supply system

Seal Gard 32 Installation

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Clean Flush Water Source

Integral Check Valve

Optional Flow SwitchInstalls near the seal, at a heightsuitable for reading the gauges

• Standard stand is 762 mm (30 inches)

• Must be installed vertically

• Connections are labels on the mounting bracket

• Provisions for several mounting options

Connect to a process-sideport on seal

Seal Gard 54 Functionality (Dual Seals)

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Adjust back pressure valveuntil pressure shown here

is slightly above the desired pressure at the seal

Clean Flush Water Source(Connect using 3/8 inch tubing)

To Seal (Connect using 3/8 inch tubing)

Adjust indicator markto desired flowrate

(should both be equal)

Use plunger to clearflowmeter glass

(does not interrupt flow)

From Seal (Connect using 3/8 inch tubing)

To Drain or Collection System (Connect using 3/8 inch tubing)

Adjust until top of flowmeter

float aligns with indicator mark

Back pressure valve,sets the barrier

pressure at the seal

Seal Gard 54 Dual Flowmeter

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To drain,collection, or

use as Plan 32



Integral Check Valve

Seal Gard 54 Single Flowmeter

With single flowmeter

• Second Flowmeter deleted

• Retains back pressure regulator

In order to check the integrity of the inner seal, the back pressure valvecan be closed. If the flowmeterreads zero, then the inner seal is intact

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To drain,collection, or

use as Plan 32



Seal Gard 32 and 54 Features

• Double wiper plunger cleaning rod

- Stores completely out of flow path

- Rod is removable

- Can be cleaned with equipment running

- Replaceable, included in repair kit

• Clog-resistant flow and pressure control valves

- Includes tamper-resistant locknuts

- Can pass solids up to five times larger than a standard needle valve

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Seal Gard 32 and 54 Features

• Check valve

• Include check valve on outlet to seal if there is concern about contaminating the supply header with the process fluid

• Hang up resistant vertical flowmeter

• No spring to rely on

• Repeatable measurements to ±1%

• Indicating arrow for desired flowrate

• Dual units standard

• Freeze-resistant to -20°C (-4°F)

• Tube is replaceable, included in repair kit

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Seal Gard 32 and 54 Gauge Options

• Gauge Ranges:

- Flow


• 0.5 – 8 LPM (0.1 – 2.0 GPM)

• 1 – 13 LPM (0.25 – 3.5 GPM) [Range not available on Seal Gard 54 dual flowmeter]

- Pressure

• Ashcroft standard


• 0 – 1100 kPa (0 – 160 psi)

• 0 – 2500 kPa (0 – 360 psi)

• Best practice – Size for operation in the middle 1/3 of the available range

• Best practice - Seal flush water source pressure should be 1 bar (15 psig) above the seal chamber pressure

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Seal Gard I, II, 32 and 54 Optional Flow Alarm Sensor

• Flow alarm sensor

- Intrinsically safe NAMUR sensor, 10 mm range

- Area Classification: Class 1 Div 1

- Can be set to high or low flow alarm

- Proximity alarm

• Works by detecting metallic float in flowmeter

- Alarm range

• 1 – 5 LPM (0.25 – 1.2 GPM )

• 2 - 9 LPM (0.5 – 2.5 GPM )

- Voltage options

• 20 - 250 VAC/DC

• 10 - 55 VDC

- Configurable normally open or normally closed19

Description (most to least common)

Part Number

10-55 VDC U3DSGPS072A

20 – 250 VAC/DC U3DSGPS071A

Capacity for Dual Alarms

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• Dual flowmeters allow multiple alarms and easier troubleshooting

- High flow alarm detects:

• Potential need to adjust flow regulating valve

- Differential pressure between supply and return has increased

• Excessive seal leakage

- If flow continues with pressurizing valve closed, the seal is leaking

- Low flow alarm detects:

• Loss or drop in supply pressure

• Clog in system

- If flow regulating valve is open and normal flow cannot be restored

- High supply-side alarm and low return-side alarm detects:

• Excessive seal leakage

• Clog in system

Dust caps installed at top of flowmeter tubes

Note plunger rods safety stored in mounting bracket

Seal Gard 32 and 54 Constant Flow Regulator

• Constant flow regulator

- Should be used if the supply pressure or seal chamber pressure varies widely

• Symptom of variable pressures in the system include:

- Changes in the indicated flowrate

- False alarms from the low or high flow alarm sensor

- Rated to 20.7 bar (300 psig)

- C0448260DB [up to 10 LPM (2.6 GPM)]

- C0448258DB [up to 13 LPM (3.5 GPM)]

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Seal Gard 32 and 54 Options

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• Mounting plate is standard on Seal Gard 32 & 54

• Mounting plate for Seal Gard I & II

- U3DSGMP0021

• Floor mounting stand is optional

- Secures with M12 bolt (included) and 2x 8mm or 5/16 inch bolts and nuts

- Part Numbers:

• Seal Gard 32 & 54

- C0448261DB

• Seal Gard I & II

- U3DSGMP0023

762 mm (30”)

100 mm (4.80”)

100 mm (3.94”)

Ø 8 mm ( ⁄𝟓𝟓 𝟏𝟏𝟏𝟏”)

138 mm (5.45”)

18 mm (0.71”)

Dimensions

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283 mm (11.15”)138 mm (5.45”)11

7 m

m (4

.61”

)76

mm

(3.0

0”)

Competitive Comparison – John Crane Safeunit

Compared to John Crane Safeunit, Flowserve Seal Gard 32 and 54 offer:

• Available duplex flowmeters and duplex flow alarm sensors

• Standard 3/8 inch compression tube fittings vs hose barbs

• Standard check valve

• Clog resistant vertical conical metering float

• Quality name brand pressure gauges made by Ashcroft

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John Crane Safeunit

Seal Gard 32 & 54

Safeunit

Max Flow LPM (GPM) 13 (3.5) 15 (4.0)Max Temperature °C (°F) 100 (212)* 60 (140)Max Pressure BarG (psig) 25 (362) 25 (362)

*130°C 266°F with optional PVDF Body

Competitive Comparison – John Crane Safeunit Ultima

• Compared to John Crane Safeunit Ultima, Flowserve Seal Gard 32 and 54 offer:

- Available duplex flowmeters and duplex flow alarm sensors

- Standard 3/8 inch compression tube fittings vs hose barbs

- Standard check valve

- Clog resistant vertical conical metering float

- Quality name brand pressure gauges made by Ashcroft

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Seal Gard 32 & 54

SafeunitUltima

Max Flow LPM (GPM) 13 (3.5) 15 (4.0)**Max Temperature °C (°F) 100 (212)* 100 (212)Max Pressure BarG (psig) 25 (362) 25 (362)***

*130°C (266°F) with optional PVDF Body

John Crane Safeunit Ultima

** Standard flow rate is up to 8 LPM (2 GPM)***60 BarG (870 psig) available

Competitive Comparison – AES FlowTrue

• Compared to AES FlowTrue, Flowserve Seal Gard 32 and 54 offer:

- Standard 3/8 inch compression tube fittings vs hose barbs

- Clog resistant vertical conical metering float

- Flow and Pressure more easily adjusted with knobs


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Seal Gard 32 & 54

FlowTrue



AES FlowTrue

Competitive Comparison – Chesterton Flow Guardian

• Compared to Chesterton Flow Guardian, Flowserve Seal Gard 32 and 54 offer:

- Standard 3/8 inch compression tube fittings

- Standard check valve


- More options

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Seal Gard 32 & 54

Safeunit



Chesterton Flow Guardian

Seal Gard 32 Part Numbers

• Standard Materials of Construction:

- Body: Polyoxymethylene (POM)

- Flowmeter tube: Polysulfone Plastic (PSU)

- Metal parts: 316SS

- Elastomers: Fluoroelastomer (FKM)

• Standard Parts:

- Flowmeter

- Pressure gauge

- Cleaning plunger

- Check valve

- Flow regulating valve

- 3/8 inch compression tube fittings

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Part Number Flow Range LPM (GPM)

Pressure Gauge Range kPa (psi)

U3DPU012219* 0.4 – 7.5 (0.1 – 2.0) 1100 (160)C0452076ZZ 0.4 – 7.5 (0.1 – 2.0) 2500 (360)

U3DPU011893* 1 – 13 (0.25 – 3.5) 1100 (160)C0452074ZZ 1 – 13 (0.25 – 3.5) 2500 (360)

*Most Popular

Seal Gard 54 Single Meter Part Numbers






• Standard Parts:

- Flowmeter

- Pressure gauge

- Cleaning plunger

- Check valve

- Flow regulating & back pressure regulating valves


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U3DPU012218* 0.4 – 7.5 (0.1 – 2.0) 1100 (160)C0452259ZZ 0.4 – 7.5 (0.1 – 2.0) 2500 (360)C0452256ZZ* 1 – 13 (0.25 – 3.5) 1100 (160)C0452258ZZ 1 – 13 (0.25 – 3.5) 2500 (360)*Most Popular

Seal Gard 54 Dual Meter Part Numbers






• Standard Parts:

- Qty 2 Flowmeters

- Pressure gauge

- Qty 2 Cleaning plunger

- Check valve

- Flow regulating & back pressure regulating valves


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U3DPU028197* 0.4 – 7.5 (0.1 – 2.0) 1100 (160)C0452245ZZ 0.4 – 7.5 (0.1 – 2.0) 2500 (360)

*Most Popular

Other Part Numbers You Need to Know

• Repair Kit

- Includes all O-rings, replacement flow meter tube, and replacement cleaning rod

- C0448266ZZ

• Flow Alarm Sensor, 10 - 55 VDC PROXIMITY SWITCH; Alarm Range

- U3DSGPS072A

• Flow Alarm Sensor, 20 – 250 VAC/DC PROXIMITY SWITCH; Alarm Range

- U3DSGPS071A

• 316SS Floor Stand for Seal Gard 32 and 54

- C0448261DB

• Constant Flow Regulator [up to 10 LPM (2.6 GPM)]

- C0448260DB

• Constant Flow Regulator [up to 13 LPM (3.5 GPM)]

- C0448258DB31

Repair Kit

Lead-times

• Seal Gards are often in stock for quick deliveries within 1 week

• For Seal Gard configurations that are not stocked, the lead-times are:

- Existing part number

• 4-5 weeks

- New part number

• 5-6 weeks

- Unassembled option

• Seal Gards can be ordered with or without the accessories installed (E.g as a complete assemble or as a parts kit) Lead-times are often shorter if you order a stocked Seal Gard and the accessories as separate part numbers

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Summary

• The Seal Gard product family offers a cost effect means of controlling flush water flowrate to packing, single mechanical seals, and dual mechanical seals

• Seal Gard 32 & 54 extend the pressure, temperature, and flow range of the familybeyond Seal Gard I & II

- Design MAWP: 25 Bar @ 100°C (362 PSIG @ 212°F)*

- Designed for use on water flush and water barrier fluid

- Does not meet API 682 requirements

- Cost effective, high quality alternative to an engineered system

- Seal Gard I & II remain available for low flow applications up to 150 LPH (40 GPH)

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Frequently Asked Questions

• What are the material options for improved chemical compatibility?

- If the POM standard body is not compatible with the service or the environment, a PVDF body is available

- EPDM elastomers are available as an option

- The PSU flowmeter tube and 316ss wetted metal parts cannot be changed to other materials

• Can I use Seal Gard with other flush fluids?

- Since Seal Gard can be isolated from the process fluid by a check valve, it can be used in many services other than water, however Seal Gard is designed for use only with clean water flushes. Fluids with different densities, viscosities, and solids content may not work well in Seal Gard.

• Can I order Seal Gard with accessories such as the alarm switch, constant flow regulator, or stand pre-installed?

- Yes, it is possible to order Seal Gard with accessories pre-installed, however a new assembly number will need to be created and the lead-time will likely be much longer.

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Troubleshooting

Seal Gard 32 (Single Seals) and 54 (Dual Seals)

• No flow or low flow alarm

- Cause: Supply pressure lower than seal chamber pressure

- Action: Check supply pressure, check seal chamber pressure, clean Seal Gard

Seal Gard 54 (Dual Seals)

• High pressure

- Causes: Back pressure valve too close or supply pressure too high

- Action: Adjust back pressure valve and inspect flush water supply header pressure

• High flow alarm possibly with low pressure

- Causes: Inner seal failure OR back pressure valve too open

- Action: Adjust back pressure valve

• If flow continues after back pressure valve is closed, then the inner seal has failed

• Low pressure may indicate a pressure reversal has occurred, correct back pressure valve and check inner seal integrity 35

Seal Gard I and II AvailabilitySeal Gard I and II are limited to the existing configurations only

• Any new configurations will require a Seal Gard 32 or 54

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Seal Gard I Check Valve Pressure Gauge Part Number0-20 GPH Yes 100 psi UKD00SG10200-20 GPH Yes 160 psi UKDG0SG10200-40 GPH Yes 100 psi UKD00SG1040Repair Kit UKDRKSG1020

Seal Gard II Check Valve Pressure Gauge Part Number0-20 GPH Yes 100 psi UKD00SG20200-40 GPH Yes 100 psi UKD00SG20400-40 GPH Yes 300 psi UKDH0SG20400-40 GPH Yes None UKD02SG2040Repair Kit UKDRKSG2020

Constant Flow Regulator U3DSGFR2850

Most Common Seal Gard I and II Part Numbers

Appendix A: Complete List of Seal Gard I and II Part Numbers

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Existing Part Numbers Seal Gard 32

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Seal Gard 32 Pressure Gauge

Connections Options Elastomers Body Part Number

0.1-2 GPM 0-160 psi 3/8” tube fittings FKM POM U3DPU012219

0.25-3.5 GPM 0-160 psi 3/8” tube fittings EPDM POM U3DPU027481*

0.25-3.5 GPM 0-160 psi 3/8” tube fittings FKM POM U3DPU011893

0.25-3.5 GPM 0-160 psi 3/8” tube fittings FKM PVDF C0370665ZZ

0.25-3.5 GPM 0-160 psi 3/8” tube fittings AC NO Alarm Sensor FKM PVDF U3DPU030203

0.25-3.5 GPM 0-160 psi 3/8” tube fittings AC NO Alarm Sensor FKM PVDF U3DPU0316440.1-2 GPM 0-160 psi 3/8” OD straight tube FKM POM U3DPU010297

0.25-3.5 GPM 0-160 psi 3/8” OD straight tube FKM POM U3DPU010298

*Indicates usually stocked

• FKM = Fluoroelastomer

• EPDM = Ethylene Propylene Diene Monomer

• POM = Polyoxymethylene (Acetal)

• PVDF = Polyvinylidene Fluroide Thermoplastic.

Existing Part Numbers Seal Gard 54

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Seal Gard 54 Pressure Gauge Connections Options Elastomers Body Part Number

0.1-2 GPM 0-160 psi 3/8” tube fittings FKM POM U3DPU012218*

0.1-2 GPM 0-160 psi 3/8” tube fittings Dual Flowmeters FKM POM U3DPU028197*

0.1-2 GPM 0-100 psi 3/8” tube fittings Dual Flowmeters FKM POM C0282443ZZ

*Indicates usually stocked

Seal Gard 32 and 54 Auxiliary Systems, Simplified... · 2019-10-07 · • Pressurized barrier...

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