23 23 00_Mechanical Piping.pdf

SECTION 23 23 00

MECHANICAL PIPING

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PART 1 - GENERAL

1.01 DESCRIPTION

A. Provide pipe, pipe fittings, piping specialties, pumps and related items required for complete piping system.

B. Related Work: The requirements of Section 22 05 00, Common Plumbing Materials and

Methods, also apply to this section.

1.02 QUALITY ASSURANCE

A. General: ASTM, and ANSI Standards are indicated. In addition, special standards are referenced where neither ASTM nor ANSI Standards are applicable.

B. Labeling: All piping shall be continuously and legibly labeled on each length as required by codes and standards and including as a minimum, country of origin, manufacturer’s identification marking, wall thickness designation, and applicable standards and approvals. Fittings shall be labeled as required by the referenced standard. Tubular fixture traps shall be stamped with manufacturer’s mark and material thickness.

C. Definitions: Where piping fluid is not indicated in the following paragraphs, provide similar piping materials for similar fluids (i.e., “make-up water” = “domestic water”; “wet stand pipe” = “fire sprinkler pipe”; “drainage piping” = “sanitary/storm sewer piping”).

1.03 SUBMITTALS

A. Submit catalog data for each product specified.

PART 2 - PRODUCTS

2.01 PIPING MATERIALS

A. Black Steel Pipe:

1. Applications:

a. Compressed Air

2. Pipe: Schedule 40, standard black steel pipe ASTM A-106 or A-53.

3. Threaded Fittings: For above ground installations only.

a. Banded class 120 cast iron fittings, ANSI B16.4 to 125 psi.

2.02 MISCELLANEOUS PIPING MATERIALS

A. Sleeve Seal: Rubber-link pipe wall and casing closure. Thunderline Link-Seal. For fire rated wall, floor or ceiling penetrations, 3-M “CP-25” caulk, “No. 303” putty and/or “PSS 7904” sealing system.

B. Pressure Gauges: Install where shown on Drawings, 4-1/2" dial, 0-160 psig graduation pressure gauge, dry construction designed for exterior location and air systems. Weiss NF4UGY1 Series or equivalent Ashcroft, Marsh, Trerice, Weksler.

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C. Pressure Reducing Valve: Cast iron body construction with internal strainer and Buna-N diaphragm. Select range to include required operating pressure. McMaster-Carr or approved equal.

D. Service Valve: Acceptable Manufacturers: Milwaukee, Crane, Grinnell, Nibco, Hammond, Stockham, Legend, Watts, and Walworth. Grooved end valves Victaulic, Gruvlock, or accepted substitute. NIBCO numbers are given except as noted. Where possible, provide valves from a single manufacturer.

E. Ball: Two-piece, bronze body, full port, 600 psi WOG, Fig. T/S-585-70.

PART 3 - EXECUTION

3.01 PIPE INSTALLATION

A. General: Install pipe, tube and fittings in accordance with recognized industry practices and plumbing code standards. Install each run accurately aligned with a minimum of joints and couplings, but with adequate and accessible unions and flanges for disassembly, maintenance and/or replacement of valves and equipment. Reduce sizes (where indicated) by use of reducing fittings.

B. Piping Runs: Route piping close to and parallel with walls, overhead construction, columns and other structural and permanent-enclosure elements of the building. Install piping plumb and level except where pitched for drainage. If not otherwise indicated, run piping in the shortest route which does not obstruct usable space or block access for servicing the building or equipment and avoid diagonal runs. Wherever possible in finished and occupied spaces, conceal piping from view. Do not encase horizontal runs in solid (concrete or CMU) partitions.

3.02 PIPING JOINTS

A. General: Provide joints of the type indicated in each piping system, and where piping and joint as manufactured form a system, utilize only that manufacturer's material.

B. Changes in Direction: Use fittings for all changes in direction. Run lines parallel with building surfaces.

C. Unions and Flanges: At all equipment to permit dismantling and elsewhere as consistent with good installation practice.

3.03 MISCELLANEOUS PIPING EQUIPMENT

A. Sleeve Caulking: Grout above grade pipe with cement mortar or approved waterproof mastic. All caulking or grouting shall extend full depth of sleeve. Install UL sealing caulk, putty and/or system at all penetrations of fire rated walls, floors and ceiling.

3.04 TEST

A. General:

1. Minimum duration of two hours or longer, as directed for all tests. Furnish report of test observation signed by qualified inspector. Make all tests before applying insulation, backfilling, or otherwise concealing piping or connecting fixtures or equipment. Where part of the system must be tested to avoid concealment before the entire system is complete, test that portion separately, same as for entire system.

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2. Provide all necessary temporary equipment for testing, including pump and gauges. Remove control devices before testing and do not use piping system valves to isolate sections where test pressure exceeds valve pressure rating. Fill each section with water and pressurize for the indicated pressure and time.

3. Observe each test section for leakage at end of test period. Test fails if leakage is observed or if pressure drop exceeds 5% of test pressure.

B. Repair: Repair piping system sections which fail the required piping test by disassembly and re-installation, using new materials to the extent required to overcome leakage. Do not use chemical stop-leak compounds, solder, mastics, or other temporary repair methods.

C. Compressed Air Piping: Isolate and test prior to connection to the existing system.

Pneumatic test of 100 psig without loss for four hours.

END OF SECTION