Welker PP-1 Installation and operating instructions

INSTALLATION, OPERATION, ANDMAINTENANCEMANUAL
WELKER PITOT PROBE
MODELS
PP-1
PP-2
PP-3
PP-F

DRAWING NUMBERS
AD626BA
AD626BJ
AD843BD.1
PP1231

MANUAL NUMBER
IOM-101

REVISION
Rev. C, 1/3/2019

TABLEOFCONTENTS
2IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331
Copyright © 2019Welker, Inc. All rights reserved. Welker®, W Welker®, W logo, WelkerScope®, WelkerJet®, and OdorEyes®are registered trademarks of Welker, Inc.
 SAFETY 3
1. PRODUCT INFORMATION 4
1.1 Introduction 4
1.2 Product Description 4
1.3 Specifications 5
1.4 Equipment Diagrams 7
  
2. INSTALLATION & OPERATION 11
2.1 Before You Begin 11
2.2 Installation and Operation 11
2.3 Removing the Pitot Probe 12
  
3. MAINTENANCE 13
3.1 Before You Begin 13
3.2 Maintenance 14
3.3 Troubleshooting 14
  
 APPENDIX 15
 A: Referenced or Attached Documents 15


IMPORTANTSAFETYINFORMATION
READALLINSTRUCTIONS
Notes emphasize information and/or provide additional information to assist the user.
Caution messages appear before procedures that could result in damage to equipment if not observed.
Warning messages appear before procedures that could result in personal injury if not observed.
This manual is intended to be used as a basic installation and operation guide for the Welker Pitot Probes, PP-1, PP-2, PP-3, and PP-F. For comprehensive instructions,
please refer to the IOM Manuals for each individual component. A list of relevant component IOM Manuals is provided in Appendix A of this manual.
The information in this manual has been carefully checked for accuracy and is intended to be used as a guide for the installation, operation, and maintenance of
the Welker equipment described in this manual. Correct installation and operation, however, are the responsibility of the end user. Welker reserves the right to make
changes to this manual and all products in order to improve performance and reliability.
BEFOREYOUBEGIN
Read these instructions completely and carefully.
IMPORTANT - Save these instructions for local inspector's use.
IMPORTANT - Observe all governing codes and ordinances.
Note to Installer - Leave these instructions with the end user.
Note to End User - Keep these instructions for future reference.
Installation of this Pitot Probe is of a mechanical nature.
Proper installation is the responsibility of the installer. Product failure due to improper installation is not covered under the warranty.
If you received a damaged Pitot Probe, please contact a Welker representative immediately.
Phone: 281.491.2331
Address: 13839 West Bellfort Street
Sugar Land, TX 77498
SAFETY
3IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

1.1 Introduction
We appreciate your business and your choice of Welker products. The installation, operation, and maintenance liability for this
equipment becomes that of the purchaser at the time of receipt. Reading the applicable Installation, Operation, and
Maintenance (IOM) Manuals prior to installation and operation of this equipment is required for a full understanding of its
application and performance prior to use.*
If you have any questions, please call Welker at 1-281-491-2331.
*The following procedures have been written for use with standard Welker parts and equipment. Assemblies that have been modified may have additional
requirements and specifications that are not listed in this manual.
1.2 Product Description
The Welker PP-1, PP-2, PP-3, and PP-F Pitot Probes are designed to create a product loop through a connected sampler or
sampling system.
When the product outlet and return of the unit are connected to a sampler or sampling system, the circulation pump and/or
kinetic energy from flow velocity create a circulation loop, a.k.a. hot loop. When in operation, product circulates through the hot
loop, continually presenting fresh product to the sampler or sampling system, allowing for collection of representative samples.
Welker may custom design the PP-1, PP-2, PP-3, and PP-F to suit the particular application and specifications of each customer.
SECTION 1: PRODUCTINFORMATION
4IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

1.3 Specifications

The specifications listed in this section are generalized for this equipment. Welker can modify the equipment according to your
company's needs. Please note that the specifications may vary depending on the customization of your equipment.
Table 1: PP-1 Specifications
Products Sampled Gases and Liquids Compatible With the Materials of Construction
Material of Construction 316/316LStainless Steel
Maximum Allowable Operating Pressure
½" MNPT: 7700 psig @ -50 °F to 300 °F (530 barg @ -45 °C to 148 °C)
¾" MNPT: 7300 psig @ -50 °F to 300 °F (503 barg @ -45 °C to 148 °C)
1" MNPT: 5300 psig @ -50 °F to 300 °F (365 barg @ -45 °C to 148 °C)
Connections Pipeline: ½", ¾", or 1" MNPT
Product Inlet and Return: ¼" FNPT
InsertionDiameter ¼" (Standard)
³⁄₈"
Feature Scooped Tip on Inlet Probe
Options
45° Beveled Inlet Probe
Tungsten Carbide and Sulfinert®-Treated Sample Exposed Parts
CRNCertification

Table 2: PP-2 Specifications
Products Sampled Gases and Liquids Compatible With the Materials of Construction
Material of Construction 316/316LStainless Steel
Maximum Allowable Operating Pressure 3600 psig @ -20 °F to 120 °F (248 barg @ -28 °C to 48 °C)
Connections Pipeline: ½", ¾", or 1" MNPT
Product Inlet and Return: ¼" FNPT
InsertionDiameter ¼" (Standard)
³⁄₈"
Features Ball Valves
Scooped Tip on Inlet Probe
Options
45° Beveled Inlet Probe
Sulfinert®-Treated Sample Exposed Parts
Tungsten Carbide and Sulfinert®-Treated Sample Exposed Parts
CRNCertification
NACECompliance

Table 3: PP-3 Specifications
Products Sampled Gases and Liquids Compatible With the Materials of Construction
Material of Construction 316/316LStainless Steel
Maximum Allowable Operating Pressure 3600 psig @ -20 °F to 120 °F (248 barg @ -28 °C to 48 °C)
Connections Pipeline: ¾" MNPT (Others Available)
Product Inlet and Return: ¼" FNPT
InsertionDiameter ³⁄₈"
Features Needle Valves
Scooped Tip on Inlet Probe
Option 45° Beveled Inlet Probe
5IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331


Table 4: PP-F Specifications
Products Sampled Gases and Liquids Compatible With the Materials of Construction
Material of Construction 316/316LStainless Steel (Standard)
Carbon Steel
Maximum Allowable
Operating Pressure
150 ANSI Carbon Steel: 285 psig @ -20 °F to 100 °F (19 barg @ -28 °C to 37 °C)
150 ANSI Stainless Steel: 275 psig @ -20 °F to 100 °F (18 barg @ -28 °C to 37 °C)
600 ANSI Carbon Steel: 1480 psig @ -20 °F to 100 °F (102 barg @ -28 °C to 37 °C)
600 ANSI Stainless Steel: 1440 psig @ -20 °F to 100 °F (99 barg @ -28 °C to 37 °C)
900 ANSI Carbon Steel: 2200 psig @ -20 °F to 100 °F (151 barg @ -28 °C to 37 °C)
900 ANSI Stainless Steel: 2160 psig @ -20 °F to 100 °F (148 barg @ -28 °C to 37 °C)
1500 ANSICarbon Steel: 3705 psig @ -20 °F to 100 °F (255 barg @ -28 °C to 37 °C)
1500 ANSIStainless Steel: 3600 psig @ -20 °F to 100 °F (248 barg @ -28 °C to 37 °C)
Pipeline Connection
Size: 1", 2", or 3"
Rating: 150, 600, 900, or 1500 ANSI
Facing: RF or RTJ
Others Available
Outlet and Return Connections ¼" FNPT
½" FNPT
Tubing Diameter ³⁄₈" (Standard)
½"
Features Scooped Tip on Inlet Probe
Shroud
Options Inlet and Return Ball Valves
NACECompliance
6IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

1.4 Equipment Diagrams
Figure 1: PP-1 Diagram
7IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 2: PP-2 Diagram
8IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 3: PP-3 Diagram
9IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

Figure 4: PP-F Diagram
10 IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

2.1 Before You Begin

After unpacking the unit, check the equipment for compliance and any damage that may have occurred during shipment.
Immediately contact a Welker representative if you received damaged equipment.


When sealing fittings with PTFE tape, refer to the proper sealing instructions for the brand used.

1. For sampling applications, Welker recommends that the unit be inserted into the center one-third (¹⁄₃) of the pipeline in
a location where the product is well-mixed and will yield an accurate and representative sample.
2. For gas sampling applications, Welker recommends that the unit be installed in the top of the pipe.
3. For liquid sampling applications, Welker recommends that the unit be installed in the side of the pipe.
4. For liquid sampling applications, locate the unit two to four pipe diameters (2–4D) downstream of an inline static mixer
or other flow conditioning system.
5. Handle the unit with care.
2.2 Installation and Operation
1. Depressurize the pipeline.

The pipeline must be depressurized prior to installing and removing the unit.

2. As necessary, install valves to the pipeline connection (Figure 1). One will be product outlet (P₁) valve A, and the other
will be product return (P₂) valve B.
3. Ensure that product outlet (P₁) valve A and product return (P₂) valve B are closed (Figure 2, Figure 3, or Figure 4). As
necessary, cut off excess tubing from the probe. Using tubing cutters, remove the excess tubing, and then file and
smooth the cut edge of the probe.
4. If the probe tip is scooped or beveled, determine the direction of product flow in the pipeline. For the Pitot Probe to
function correctly, it must be installed so that the scooped probe tip is open against the direction of product flow.

If applicable, refer to the flow direction stamped on the pipeline connection or handle to determine correct orientation before
installing the Pitot Probe to the pipeline.

5. If the Pitot Probe has an MNPT pipeline connection, continue to step 6. If the Pitot Probe has a flanged pipeline
connection, proceed to step 9.
SECTION 2: INSTALLATION&OPERATION
11 IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

MNPTPipeline Connection
6. Wrap the threads of the threaded pipeline connection with PTFEtape.
7. Install the Pitot Probe to the mating connection on the pipeline and tighten.
8. Proceed to step 14.
Flanged Pipeline Connection
9. Position an appropriately sized gasket on the mating flange connection.
10. Install the Pitot Probe to the mating flange connection.
11. Following a cross-bolting sequence, install bolts and nuts to the flanges.
12. Tighten all bolts to the appropriate torque.
13. Continue to step 14.
Completing Installation
14. Pressurize the pipeline and check for leaks.
15. Use appropriately sized tubing to connect from product outlet (P₁) valve A to the customer equipment (Figure 2, Figure
3, or Figure 4).
16. Use appropriately sized tubing to connect from the customer equipment to product return (P₂) valve B (Figure 2, Figure
3, or Figure 4).
17. Open product outlet (P₁) valve A and product return (P₂) valve B to begin operation (Figure 2, Figure 3, or Figure 4).
2.3 Removing the Pitot Probe
1. Depressurize the pipeline.

The pipeline must be depressurized prior to installing and removing the unit.

2. Close product outlet (P₁) valve A and product return (P₂) valve B (Figure 2, Figure 3, or Figure 4).
3. Disconnect customer equipment from the outlet and return.
4. Remove the Pitot Probe from the pipeline.
12 IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

3.1 Before You Begin
1. Maintenance is necessary if a leak occurs at one or both valves.
2. Prior to maintenance or disassembly of the unit, it is advisable to have a repair kit available for repairs of the system in
case of unexpected wear or faulty seals.

New seals supplied in spare parts kits should be lightly lubricated before being installed to ease the installation of the seals and
reduce the risk of damage when positioning them on parts. Wipe excess lubricant from the seals, as it may adversely affect
analytical instrument results.

For sample-exposed seals, Welker recommends non-hydrocarbon-based lubricants, such as Krytox®.
For non-sample-exposed seals, Welker recommends either non-hydrocarbon-based lubricants or silicone-based lubricants, such
as Molykote® 111.

After the seals are installed, the outer diameter of shafts and inner diameter of cylinders may be lubricated to allow smooth
transition of parts.

3. All maintenance and cleaning of the unit should be performed on a smooth, clean surface.
4. Welker recommends having adjustable wrenches available for maintenance. Please note that the exact tool required
may vary by model.
SECTION 3: MAINTENANCE
13 IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

14 IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331
3.2 Maintenance

Maintenance is needed when a leak occurs at product outlet (P₁) valve A and/or product return (P₂) valve B.

1. Prior to performing maintenance, the Pitot Probe must be removed from the pipeline. See Section 2.3, Removing the
Pitot Probe, for instructions on removing the Pitot Probe from the pipeline.
2. Unscrew product outlet (P₁) valve A and/or product return (P₂) valve B from the pipeline connection (Figure 2, Figure 3,
or Figure 4).
3. To perform maintenance on product outlet (P₁) valve A and/or product return (P₂) valve B, refer to the Installation,
Operation, and Maintenance (IOM) Manual for the valve(s).
4. As necessary, clean the probe.
5. Install product outlet (P₁) valve A and/or product return (P₂) valve B to the pipeline connection (Figure 2, Figure 3, or
Figure 4).
6. Maintenance is now complete. Reinstall the Pitot Probe according to the instructions in Section 2.2, Installation and
Operation.

Check valves for leaks and repair as necessary during reinstallation.
3.3 Troubleshooting
Table 5: Pitot Probe Troubleshooting
Issues Possible Causes Solutions
Product outlet (P₁) valve A and/or
product return (P₂) valve B is
leaking.
There is debris in the valve.
The valve O-rings and/or seat are worn or
damaged.
Maintain the valve. Refer to the
Installation, Operation, and Maintenance
(IOM) Manual for the valve for
maintenance instructions.
Maintain the valve. Refer to the
Installation, Operation, and Maintenance
(IOM) Manual for the valve for
maintenance instructions.

Welker Installation, Operation, and Maintenance (IOM) Manuals suggested for use with this unit:
lIOM-105: Welker NV-1 and NV-2 Instrument Valves
Other Installation, Operation, and Maintenance (IOM) Manuals suggested for use with this unit:
lApollo Valves 76-100 Series Stainless Steel Ball Valve With Mounting Pad 1⁄4" - 1" (Welker IOM-V141)
lParker Hannifin Corporation BallValves B Series (Welker IOM-V365)
lParker Hannifin Corporation Ball and Plug Valves (Welker IOM-V213)
Welker drawings and schematics suggested for use with this unit:
lAssembly Drawing: AD626BA (PP-2)
lAssembly Drawing: AD626BJ (PP-3)
lAssembly Drawing: AD843BD.1 (PP-F)
lMachine Drawing:PP1231 (PP-1)
APPENDIX A: REFERENCEDOR ATTACHED DOCUMENTS
15 IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331

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
13839 West Bellfort Street
Sugar Land, TX77498
Phone: [phone]
welker.com
NOTES
16 IOM-101 MODELS: PP-1, PP-2, PP-3, and PP-F REV: C 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331