15060.doc

96-620

00-32 07-733 07-743

SECTION 15060 - PIPE AND PIPE FITTINGS

PART 1 GENERAL

1.1

WORK INCLUDED

A.

This Section governs the installation of interior piping systems on the project.

B.

The pipe and fittings shall be as specified in the Section covering a specific system.

1.2

SUBMITTAL DATA

A.

See SECTION 15000 for general submittal requirements.

B.

Provide submittal data for any material or equipment specified in this Section as listed on the Submittal Schedule (see SECTION 15000) and any special or additional data as requested by the Contracting Officer.

PART 2 PRODUCTS

2.1

GENERAL

A.

Equipment drains, relief valve drains and miscellaneous piping to be same as the specified system piping.

B. Materials shall be new, clean and free of rust.

2.2

UNIONS

A.

Steel Pipe

1.

Up through 3" - black malleable iron threaded, hexagonal nuts, ground joint (brass to iron seat), flanged unions or flanges.

2.

3-1/2" and Up - ASME flanges, welded to pipe.

3.

Victaulic couplings or approved equal are acceptable as a union.

B.

Copper Pipe

1.

Up through 2-1/2" - cast brass, copper-to-copper, hexagonal nut.

2.

3" and up - ASME cast brass flanges, soldered to pipe.

C.

Copper to Steel Pipe

1.

Up through 2" - dielectric unions with soldered or threaded ends to match adjacent piping.

2.

2-1/2" and up - cast brass flange soldered to copper pipe and steel or iron flange welded to steel pipe.

D.

Plastic (PVC) to Steel

1.

150# plastic flange with solvent weld hub to standard ASME steel flange.

2.3

REDUCERS

A.

Copper or steel, flanged, threaded, Victaulic or welded, eccentric or concentric as required, to match fittings specified for different piping systems.

2.4

STRAINERS

A.

Copper or steel, flanged, threaded or soldered, "Y" type, with Monel metal screens as required to match type of fitting specified for different piping systems. Special strainers to be as noted on the drawings.

B.

Screen area to be a minimum of three times the area of the inlet pipe.

PART 3 EXECUTION

3.1

GENERAL

A.

Install generally where and as shown on drawings. Coordinate installation of piping with other trades.

B.

Piping arranged to avoid conflict with ducts, light fixtures, etc., and to provide adequate room for personnel passage and maintenance of pipe and equipment.

C.

Provide for expansion and contraction. Anchor pipe where shown or as necessary for proper distribution of expansion stresses.

D.

Piping requiring insulation shall be run so that adequate clearance is maintained to permit proper insulation. Any piping installed without this clearance must be removed and reinstalled at the Contractor's expense to enable insulation to be applied.

E.

Provision to be made in piping for the installing and connecting of all coils, temperature control valves, wells for gauges and controllers, etc., by this Contractor.

1.

On 2-1/2" and smaller pipe, increase pipe size at well so there will be no restriction to flow.

2.

On 4" and larger steel pipe, a fitting similar and equal to victaulic 'Vic‑o‑let' will be acceptable for misc. drains and instrument well inserts.

3.2

JOINTS

A.

Pipe reamed to full inside diameter after cutting. Scale, rust and foreign manner removed before assembly. Contractor note: A minimum of one (1) pipe joint may be cut out of each system at the A/E discretion. The purpose is to inspect for proper reaming. The piping will be reassembled by the contractor at no increase of contract cost. If improper reaming is detected, the entire piping system will be rejected.

B.

Soldered Copper

1.

No self-cleaning fluxes allowed.

2.

Type hard copper - 95/5 solder.

3.

Type DWV copper - 50/50 solder.

4.

Underground K copper - silver solder.

C.

Threaded Steel

1.

Full, clean threads. Joints made up with an approved oil-graphite compound or Teflon tape applied to male thread. Use special compound for gas piping made for that purpose.

D.

Welded Joints

1.

Welding fittings shall be Tube Turns "Econo" line of butt welding fittings or as approved. Socket type fittings shall be used on small pipe.

2.

Mitering of pipe for changes in direction not permitted. Branches taken off using welding tees, not by notching or burning hole in main. Weld-O-Lets may be utilized for gauge connections and other small connections where approved by the Contracting Officer.

3.

All welds cleaned and given one coat of black, rust-inhibiting paint.

4.

Welding done by an ASME certified welder holding a current certificate.

E.

Copper Tube Extracted Joint

1.

Joint shall be produced with an appropriate tool by drilling a pilot hole and drawing out the tube surface to form a collar having a minimum height of three times the thickness of the tube wall. To prevent the branch tube from being inserted beyond the depth of the extracted joint, dimpled depth stops shall be provided. Branch tube shall be notched for proper penetration into fitting to assure a free flow joint.

2.

Extracted joints shall be brazed in accordance with the NAPHCC/ASPE National Standard Plumbing Code. Soldered joints will not be permitted.

F.

Grooved Piping Systems

1.

The piping systems, all fittings, couplings, gaskets and accessories shall be identical to the existing systems which are modified under this project.

2.

Butterfly valves, check valves and strainers may be manufactured by the piping system manufacturer but in all cases shall comply with the ratings stated in the applicable sections of specifications (e.g. Section 15100 requirements for all valves).

3.

Flanges shall be rated 250 psi.

4.

Gaskets to be Grade E (EDPM) for temperatures up to 230 degrees Fahrenheit.

5.

Couplings in machine rooms at valve connections and equipment hook-ups shall be rigid type.

G.

Plastic - as recommended by the manufacturer for the class of service.

H.

Any flanged fittings on copper pipe shall be joined to piping using a standard brass flange with copper end. A flange screwed to a sweat adapter will not be acceptable.

3.3

UNIONS

A.

Unions to be installed to facilitate the removal of any piece of equipment without having to cut any pipe.

B.

Piping shall be offset and provided with unions, flanges or Victaulic couplings where connected to equipment containing coils or tube bundles. Pipes to be connected in such a manner as to permit the removal of heads, coils, etc., with a minimum amount of disturbance to the piping system.

C.

Use insulating union or flanges for joining dissimilar metals.

3.4

REDUCERS

A.

Pipe size changes on following listed systems to be made with reducers.

1.

Hydronic Systems - eccentric type on horizontal runs with straight side on top, and concentric type in vertical pipe.

2.

Steam - eccentric type on horizontal runs with straight side on bottom, and concentric type in vertical pipe.

3.5

STRAINERS

A.

Strainers shall be installed so that there is adequate clearance for the removal and cleaning of the screen.

1.

Provide blowdown pipe and gate valve on cleanout. Run pipe down to floor or floor drain.

2.

Provide valved drain and 3/4" threaded hose connection off the cleanouts on strainer bottom.

B.

Every strainer shall be fitted with a blowdown pipe and blowdown valve.

C.

Blowdown valves shall be quarter-turn, full port ball valves for hydronic systems and gate valves for steam and condensate systems. Valves shall meet the requirements of SECTION 15100.

D.

Provide a hose thread connection in an accessible location downstream of each strainer blowdown valve unless blowdown is indicated on plans to be piped to the floor or to a floor drain.

END OF SECTION 15060

PACKAGE M OUTBUILDING RENOVATION NIH-NIAID RML HAMILTON, MT

PIPE AND PIPE FITTINGS 15060-4

RML AUTOCLAVE ( NIH-NIAID RML ( HAMILTON, MT

PIPE AND PIPE FITTINGS 15060-4