15100.doc

96-620

00-32 07-733 07-743

SECTION 15100 - VALVES

PART 1 GENERAL

1.1

WORK INCLUDED

A.

This Section governs the products used and the installation of all valves not specifically covered by other Sections of specifications.

B.

Valves covered elsewhere in the specifications shall be installed as indicated in their respective Section and in accordance with PART 3 'EXECUTION' of this Section.

1.2

RESTRICTIONS

A.

Valves of the same type or function shall be of the same manufacturer throughout the job.

B.

Each valve shall have the manufacturer's name or symbol stamped or cast on the valve body.

C.

All valves shall be suitably rated for each application in regard to temperature, pressure and fluid type.

D.

All valves shall be designed and manufactured to the requirements of applicable federal specifications for the type and pressure class of valve.

1.3

SUBSTITUTIONS

A.

Substitution of the scheduled valves is allowable unless a specific model is called out in this Section or on the plans. See SECTION 15000 for general requirements of substitutions.

B.

Substitute materials shall be equal or superior to the scheduled items in every respect. This includes design, materials of construction, ratings and adherence to federal specifications for design and manufacture.

C.

Sole authority regarding the acceptability of proposed substitutes rests with the Contracting Officer.

1.4

SUBMITTALS

A.

See SECTION 15000 for general submittal requirements.

B.

All submittals shall clearly identify all features and materials of valve construction and information regarding compliance with applicable federal specifications. Items intended for use shall be clearly indicated and the intended application, e.g. low pressure steam, domestic cold water, etc., shall be listed.

C.

Submittals for substitute items shall clearly indicate any differences from, or exceptions to, scheduled valves.

D.

Provide manufacturer's installation instructions for all butterfly valves and all soldered connection valves. Provide installation instructions for all other valves as requested by the Contracting Officer.

PART 2 PRODUCTS

2.1

GENERAL

A.

All valves and their components shall be new, clean and free of corrosion or other damage.

B.

Valves showing signs of damage or corrosion shall be removed from the job site.

2.2

SPECIALTY ITEMS AND ACCESSORIES

A.

Provide specialty operators (e.g. chain operators, etc.), indicators, locks and stops, etc., as noted herein, shown on plans or required for proper function of the valve.

2.3

ACCEPTABLE MANUFACTURERS

A.

Equivalent products of Crane, Grinnel, Conbraco, Jomar, Hammond, Nibco, Milwaukee, Rockwell, Victaulic or Watts are acceptable.

B.

Manufacturers of specialty valves are approved only for the specified model. Approval of general product lines are not necessarily intended.

2.4

REQUIREMENTS OF DESIGN AND CONSTRUCTION

A.

Unless otherwise noted, all valves shall be pressure rated and stamped as listed below by application. Valves not stamped or valves used for other than water systems (e.g. ethylene glycol solutions, etc.) require manufacturer(s) certification for the intended application.

1.

General water systems and steam up to 100 psig which is not derived from a higher pressure source (over 100 psig) through a PRV: 125 SWP and 200 WOG.

B.

Valve design features shall be as listed below for each type of valve unless otherwise approved.

1.

Gate Valves a.

Valves 3" and under for water and steam up to 100 psig: Bronze body, gland-packed, screw- in bonnet, solid wedge, rising stem, threaded or solder connection.

2.

Ball Valves a.

Valves 3" and under to have solder or threaded connections. Valves over 3" to have flanged connections. Unless otherwise indicated, all valves shall be fitted with insulated lever operators, memory stops and extended stems for insulated piping.

b.

Valves for general water service branch lines and terminal connections to be two-piece construction with conventional port design and shall be rated appropriately for the application as specified in part 'A' above.

c.

Valves for steam up to 100 psig shall be three piece full port design with reinforced TFE seals and stainless steel ball. Ball valves used for steam shall be rated 150 SWP & 400 WOG.

3.

Check Valves a.

General purpose check valves for water and low pressure steam shall be rated 125 SWP and 200 WOG.

b.

General purpose valves 3" and smaller for water and low pressure steam: Bronze and/or stainless steel construction, horizontal or Y-pattern design with threaded bonnet and renewable disk. Disc material to be Buna-N for water, teflon for steam. Threaded or solder connections.

2.5

SCHEDULES

A.

General water systems and steam up to 100 psig not derived from a higher pressure with a PRV:

VALVE

CONNECTION

MODEL NUMBER

TYPE

TYPE

MANUFACTURER

UP TO 3" OVER 3"

Gate

Solder

Nibco

Milwaukee

Thread

Flange

F-617-0

F-2885

Globe

Threaded

Flange

F-718-B

F-2981

Ball

Nibco (Water)

Nibco (Steam)

590-Y-66

Milwaukee (Water)

BA250

Milwaukee (Steam)

BA350S

Nibco (Water)

Nibco (Steam)

590-Y-66

Milwaukee (Water)

BA200

Milwaukee (Steam)

BA300S

Flange

-Submit on proposed valves-

Butterfly

BB2-350 (Below 2")

(Water Only)

BB2-100 (Below 2")

Lug or Wafer

20 Series (2"+over)

'C' or 'M' series (2"+over)

Check

(General Purpose)

Flanged

F-2974

2.6

APPLICATION

A.

In general, install valves of the type and size indicated on drawings.

B.

Ball and butterfly valves shall be used where indicated on plans and may also generally be used in lieu of gate valves provided they meet the service ratings of the application. However, gate valves shall be used where specifically indicated. Butterfly valves shall not be used for steam service.

PART 3 INSTALLATION

3.1

GENERAL

A.

Orient axis of valve stems so that in the event of stem packing leakage, fluid will not drip or run on pipe(s) below. Example: rotate valves on horizontal pipe 45E from vertical.

B.

Service and tighten all packing glands on valves so equipped so there is no leakage. Replace defective packing.

C.

Install drain cocks in all locations indicated on plans and in all additional locations necessary to allow complete system drainage.

D.

Label or tag valves as specified.

E.

Identify and turn over any loose valve keys or operators.

END OF SECTION 15100

PACKAGE M OUTBUILDING RENOVATION NIH-NIAID RML HAMILTON, MT

VALVES 15100-6

RML AUTOCLAVE REPLACEMENT ( NIH-NIAID RML ( HAMILTON, MT

VALVES 15100-4