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2” Fig. 1502 Choke

User Manual

BRC Engineering Ltd. Unit #6 655, 42nd Ave NE Calgary, Alberta Canada T2E 6S1 www.brceng.com 1-844-316-0630

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Table of Contents

1) Overview ............................................................................................................................................................... 2

2) Safety..................................................................................................................................................................... 3

3) Bonnet Assembly Procedure ................................................................................................................................. 4

4) Choke Assembly & Set-up Procedure ................................................................................................................... 4

5) Bonnet Disassembly/Rebuild Procedure............................................................................................................... 5

6) Maintenance ......................................................................................................................................................... 6

7) Storage .................................................................................................................................................................. 6

Appendix A – Assembly Drawings ................................................................................................................................. 7

1) Overview

The BRC Engineering 2” Fig. 1502 adjustable choke includes a tapered seat and variable position stem to accurately restrict flow to drop pressure across the choke. The 2” Fig. 1502 fixed choke incorporates a fixed orifice flow bean for non-variable flow restrictions. Service Specifications: 10,000 psi Sour Service: LU–DD-NL-PSL1-PR1 Temperature -46°C to 121°C, sour service (carbon or low alloy steel, NACE MR0175, no H2S limit), product specification level 1 (unless otherwise specified by the customer), performance rating 1. 15,000 psi Standard Service: PU–AA–PSL1-PR1 Temperature -29°c to 121°C, standard service, product specification level 1 (unless otherwise specified by the customer), performance rating 1. All components are manufactured and engineered according to API 6A PSL1/PR1 and sour service trim levels also meet NACE MR0175. BRC Engineering takes pride in manufacturing the highest quality flow control products with industry leading performance and wear resistance. Contact BRC Engineering for a complete listing of currently supplied flow control products.

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2) Safety

BRC Engineering cannot anticipate every environment where these products will be used, therefore the user MUST be aware of, and adhere to, all applicable industry standards/regulations on the safe installation and use of these products. Failure to follow these general guidelines can result in serious injury or death.

DO NOT EXCEED THE STATED MAXIMUM COLD WORKING PRESSURE (MCWP)!

Do not mix, interchange or assemble components and connections with different pressure ratings. Mismatched parts can fail under pressure.

Do not use or substitute non-BRC components or parts in BRC products and assemblies.

Do not operate above or below the working temperature rating of the product.

Do not attempt to tighten or loosen pressurized connections.

Make certain that personnel and facilities are protected from residual hazardous fluids before disassembly of any product.

Proper make-up of connections is required to attain rated working pressure.

Do not use heavily worn, corroded or eroded products. Contact BRC for information on how to determine safe wear limits.

If any leaks are detected from BRC products, immediately remove them from service to prevent damage and personal injury.

Use only appropriate product and materials for the intended service. Do not expose standard service materials to sour gas (see NACE MR0175). Do not interchange sour gas with standard service components.

When working in freezing temperatures use appropriate precautions with ferrous products. Freezing temperatures lower the impact strength of ferrous materials.

Be sure to closely follow manufacturer’s instructions and Material Safety Data Sheets when working with solvents.

For questions regarding the safe usage and applications, please contact BRC Engineering 1-844-316-0630.

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3) Bonnet Assembly Procedure

NOTE:

It is imperative that valve assembly workstation is clean and free of anything that could contaminate the grease such as metal shavings, dirt, rust, old paint, etc. Do not sand or deburr near workstation!

Refer to Appendix A for exploded assembly drawings with detailed BOMs. Step 1: Part Inspection and Preparation Check all parts for cleanliness. Check the bonnet body v-ring packing cavity for sharp edges or scratches that could damage seals and limit high pressure performance. Lightly coat the v-ring cavity and stem threads with anti-seize compound. Very lightly coat each v-ring with plug valve grease (Val-Tex #972 or #750). Step 2: V-Packing and Stem Assembly Assemble the v-packing onto the loose stem with the bronze junk ring going on first, followed by the PTFE male adaptor, then the PTFE V-rings and finally the bronze female adaptor ring. Be careful not to damage the v-rings when passing over the stem threads. Be sure that the concave side of the v-rings are facing towards the pointed end of the stem. Failure to do so will prevent sealing under pressure. While holding the pointed end, thread the stem into the v-packing gland side of the bonnet body. Gently push the v-ring stack into the bonnet body gland while threading the stem until it stops. As the v-packing must be preloaded a thin-walled tube is required to compress the v-packing to assist in the installation of the retaining ring. Step 3: Bonnet Hammer Union Nut and Hardware Assembly Slide the hammer union nut onto the bonnet body and secure with the external retaining ring. Apply thread sealant to the threads of the two grease fittings and tighten into the bonnet body with a hand wrench (2-3 turns passed hand tight). Drop the PTFE ball into the 3/8” tapped hole, followed by the installation of the thumb screw. Leave the thumb screw loose, as it is only for holding the position of the stem during operation. Step 4: Bonnet Cover, Indicator & Hand Wheel Assembly Fasten the bonnet cover to the bonnet with the split washers and socket head cap screws. Slide the choke position indicator over the stem with the set screw end facing away from the pointed end of the stem. Leave the indicator set screw loose. Install the hand wheel onto the stem and secure with the split washer and hex nut.

4) Choke Assembly & Set-up Procedure

Step 1: Choke Tee and Blast Joint Preparation Tighten the Autoclave (F5962C) plug assembly into the choke tee with a hand wrench. Install the spiral retaining ring onto the male necks of the choke tee and blast joint and slide the hammer union nuts in place. Insert the three slip segments into each hammer union nut so their retaining ring grooves are exposed on the backside of the nut. Roll the spiral retaining rings into segmented slip grooves.

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Step 2: Blast Joint and Seat/Bean Installation Thread the male end (outlet) of the choke tee onto the blast joint. Use a large hammer to tighten the hammer union nut until it makes up tight and sounds solid. Apply anti-seize to the threads of the choke seat (adjustable choke) or choke bean (fixed choke) and slide it through the choke body. Use the choke seat/bean wrench (100-03-082) to tighten the seat/bean firmly against the interior shoulder of the choke extension ONLY AFTER TIGHTENING THE CHOKE EXTENSION. Step 3: Bonnet Installation (Adjustable Choke) Make sure the choke stem is in the full open position by turning the hand wheel counter clockwise until it stops. Failure to do so could result in stem tip damage during assembly. To install the bonnet assembly, thread the hammer union nut onto the female threads of the choke body opposite to the choke extension. Use a large hammer to tighten the hammer union nut until it makes up tight and sounds solid. Step 4: Indicator Positioning (Adjustable Choke) Turn the hand wheel clockwise until the stem is seated against the choke seat. Slide the indicator down the stem and align the zero with the bonnet cap notch. While holding the indicator at the zero position, tighten the set screw into the stem. The choke is now zeroed. Add a small amount of grease with a grease gun to the two fittings for smooth stem operation and optimum sealing. Fully open and close the stem and check for smooth operation. Note: the addition of grease to the packing will energize the v-rings and create a small amount of resistance when operating the hand wheel. Fixed Choke Caps Fixed chokes are capped using a conventional male blanking cap available with or without an Autoclave (F5962C) port.

5) Bonnet Disassembly/Rebuild Procedure

A choke is disassembled and cleaned to install a new packing kit, stem and seat or to simply conduct a visual inspection. It is considered good practice to disassemble and thoroughly clean all parts in an area separate from your assembly area. Keep your assembly area clean! Step 1: Rotate the hand wheel counter clockwise until it stops with the stem is in the full open position. Failure to do so could result in stem tip damage during disassembly. Break apart the bonnet assembly and choke extension at the hammer union connections. Step 2: Disassemble, fully clean all parts and check the body, stem and seat for excessive wear. Step 3: Replace worn parts and assemble as per the above procedure. NOTE: For optimum performance it is recommended that a new v-ring packing be installed each time the choke is assembled.

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6) Maintenance

A strict policy of greasing a choke is required to ensure smooth operation. BRC Engineering suggests that chokes be greased before and after every job. BRC Engineering suggests the use of Val-Tex #972 or #750 grease. After use: Equipment should be disassembled and cleaned after each use to ensure a long life. Corrosive products left in a choke will greatly reduce its life.

7) Storage

Recommended shelf life storage (adjustable choke only): 0 to 6 months – nothing required 6 to 12 months – re-grease and full opening and closing of the stem. Making sure that operation is smooth and free of grinding or scraping. 12 or more months – Disassemble, clean, rebuild and test.

Appendix A – Assembly Drawings Document # 100-03-1001

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Appendix A – Assembly Drawings

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Appendix A – Assembly Drawings Document # 100-03-1001

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Appendix A – Assembly Drawings Document # 100-03-1001

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Appendix A – Assembly Drawings Document # 100-03-1001

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Revision Table (Do Not Print)

ECR Description Rev Name Date

0068 New release of combined user manual. 0 LG 2015-05-11

Fix Errors, Improve Grammar, replace images & BOMs with Assembly Drawings

1 JM 2018-08-02