Awwa c207 flange pdf

The flange pressure limits and the tables that describe them are. Login Register. Product Detail. Through In. Look Inside The purpose of this standard is to provide minimum requirements and dimensions for a variety of steel flanges for attachment to steel water pipe and fittings. Back to Product Details. Please login to add items. Use of Standard. It is the responsibility of the user of an AWWA stand- ard to determine that the products described in that standard are suitable for use in the particular application being considered.

Purchaser Options and Alternatives. When purchasing steel flanges for steel water pipe, the purchaser shall make specific statements in the specifications regarding the following: 1. Type of flanges required — ring or hub type Sec.

Pressure rating required Tables 2 through 7. Class of flange required Tables 2 through 7. Inside diameter of flanges Tables 2 through 7. Gaskets — rubber or nonasbestos Sec. Modification to Standard.

Major Revisions. Major changes made in this edition of the standard are as follows: 1. The standard was edited and reformatted throughout. Tables previously numbered 1—5 were renumbered Tables 2—6, respectively. Bolt diameters for class B flanges in Tables 2 and 3 new were revised to match class D bolts. Thicknesses of some flanges were changed in Tables 2 and 6 new. A tolerance on the diameter of the flange bore was added to Tables 2 and 3 new to prevent overboring hub flanges.

Hub flanges greater than 96 in. If you have any comments or questions about this standard, please call the AWWA Standards Department, ext. Quincy Ave. This page intentionally blank. The standard also covers blind flanges. The flange types and the tables that describe them are 1. Ring-type, slip-on flanges see Tables 2, 5, and 6. Hub-type, slip-on flanges see Tables 3 and 4. Blind flanges see Table 7. Unless otherwise specified by the purchaser, the manufacturer will select the type to be used.

It is intended that flanges be attached by welding in accordance with Sec. The following pressure ratings apply to flanges covered by this standard: 1. This rating is identical to that for class B cast-iron fittings for a ft Sizes 4—12 in. Sizes greater than 12 in.

The pressure ratings for the flange should be based on the design of the maximum operating pressure plus the anticipated surge pressure. Test pressures should not exceed percent of the ratings. They form a part of this standard to the extent specified herein. In any case of conflict, the requirements of this standard shall prevail.

LeJeune Rd. Manufacturer: The party that manufactures, fabricates, or produces mate- rials or products. Purchaser: The person, company, or organization that purchases any materials or work to be performed.

Flanges shall be made from seamless forgings, cut from plate as a single piece, welded bar rings, or segmented and welded plates. Steel plate or bar used in the manufacture of flanges shall meet the following requirements: 1.

Carbon max. Phosphorus max. Sulfur max. The following plate designations will meet the previously listed requirements: 1. ASTM A ASTM A, grade 60, 65, or The manufacturer shall furnish mill test reports showing conformance to the physical and chemical requirements on request. This standard is predicated on gaskets of the type, thickness, and material shown in Table l for the class of flange, working pressure, and diame- ter listed.

Gasket yield pressure shall be 3, psi Gaskets shall be suitable for a maximum seating pressure of 15, psi The dimensions listed in Tables 2 through 7 following Sec. Flanges of all classes shall be flat faced — that is, without pro- jection or raised face. The cutting tool employed shall have an approximate 0. Drilling templates are in multiples of four so that fittings can be made to face any quarter. Construction of flanges by welding segments together will be necessary when the OD of a flange exceeds the width of available plate material approximately in.

A maximum of four segments are allowed in a single flange. If the retest fails to conform to the requirements, the flange shall be rejected. Stress relieving shall be done after welding and before machining. Blind-flange thicknesses shall be as set forth in Table 7.

For blind flanges over in. Blind flanges shall be machine faced to match the mating flange. The thickness shown in Table 7 is after machining. Flanges shall be attached to pipe, fittings, or other appurte- nances by means of two fillet welds of the size shown in Figure 1.

All welds performed in the attach- ment of flanges, welding of segments of flanges, and the repair of welding defects shall conform to a written procedure developed by the manufacturer. This procedure shall be available on request to the purchaser for review, approval, or modification.

After welding of the flange has been com- pleted, a draft or layback of the flange face may occur as shown in Figure 2. Negative draft will not be permitted. Care shall be taken during the welding process to avoid warping the flange face, particularly when attaching class B flanges.

The purpose of this standard is to provide minimum requirements and dimensions for a variety of steel flanges for attachment to steel water pipe and fittings.

Sorry, this item can only be purchased by current members. This standard describes ring-type slip-on flanges and blind flanges. The flange pressure limits and the tables that describe them are. Login Register. Product Detail. Through In.