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Item # 3012-3-UT, 3" Class 300 Gate Valve


Cast carbon steel gate valves 300 pound pressure class with bolted bonnet, outside screws and yoke, FLEX-WEDGE and seal welded seat rings manufactured in accordance with API 600.

Application
These gate valves are used in pipelines and facilities for water, steam, non-aggressive gases, naphtha, naphtha derivatives and other power and process installations. In operating conditions up to 800°F (427°C), in accordance with Table pressure-temperature ratings of ANSI B16.34.

Technical Data
The basic dimensions of the gate valves are in accordance with Table No.4 Face to Face dimensions of the gate valves are in accordance with ANSI B16.10. The pipe flanges are regularly furnished faced and drilled with 0.062" (1.5 mm) raised faces, in accordance with ANSI B16.5 (Sec Note). The raised faces, in of the pipe flanges are machined in accordance with MSS SP-6

The wedges are of the single wedge flexible type providing greater sealing capability and lower torque requirements. Operation is  performed by a non-rising hand wheel; the closing direction is to the right Upon request,  gate valves are made with enclosed bevel gearing. For remote control, these valves can be equipped with electric air motor operating units.

The wedges have accurate guide slots, as assuring true alignment and providing full guidance during operation.

The seat rings are seal welded in the body and am made of carbon steel with hard faced seal surfaces. The seat faces on the wedges are made by welding on 13 CR Stainless Steel.

The gate valves are provided with a backseat bushing in the bonnet, enabling the replacement of the stem packing when the valve is in the wide open position.




Specifications  · Port  · Line Flange  · Height  · Line Flange Bolts  · Parts and Materials  · Pressure-Temperature Rating  · Tests

Specifications

Valve Size
3 in

Face to Face (L)
11.12 in
282.4 mm

Turns to Open
12.40

Handwheel Dia.
9.00 in
228.6 mm

Approx. Weight
122 lb
55.3 kg

Test Pressure
Hydrostatic (Seat) - 825 psig (56.2 bar-gage)
Hydrostatic (Shell) - 1125 psig (77.5 bar-gage)
Pneumatic (Seat) - 80 psig (5.5 bar-gage)


Port

Dia. (N)
3.00 in
76.2 mm

Dia. (S)
3.00 in
76.2 mm


Line Flange

Dia. (D)
8.25 in
209.6 mm

Min. Thickness (b)
1.12 in
28.4 mm

Bolt Circle (K)
6.62 in
188.1 mm

Hole Dia. (d)
0.88 in
22.4 mm

Raised Face Dia. (g)
5.00 in
127.0 mm


Height

Open (H)
22.65 in
575.3 mm

Closed (H)
19.10 in
485.1 mm

Stem Dim. (dv)
7/8 in
22.2 mm


Line Flange Bolts

No. of Bolts
8

Bolt Size
3/4 in
19.1 mm


Parts and Materials
Key Part Material Specification
1 Body ASTM A216 Gr. WCB
2 Seat Ring ASTM A108 Gr. 1018-1020 w/Cr-Co-W Facing
3 Wedge ASTM A21G Gr. WC8 w/13 Cr Facing
4 Stem ASTM A582 Type 410
5 Backseat Bushing ASTM A276 Type 410
6 Gasket Soft Iron, Corrugated
7 Bonnet ASTM A2l6 Gr. WCB
8 Packing Asbestos — Free
9 Gland ASTM A216 Gr. WCB
10 Yoke Nut ASTM A439 Type D2
11 Yoke Nut Retaining Nut ASTM A536 Gr. 65-46-12
Yoke Cap 10" and larger ASTM A216 Gr. WCB
12 Handwheel ASTM A47 Gr. 32510
13 Handwheel Nut ASTM A47 Gr. 32510
14 Gland Eyebolt Steel, Mild Carbon
15 Gland Eyebolt Nut ASTM A307 Gr. B
16 Body-Bonnet Stud Bolt ASTM Al93Gr. B7
17 Body-Bonnet Stud Bolt Nut ASTM A194 Gr. 2H


Pressure-Temperature Rating
Temperature Working pressure
(ºF) (ºC) (psi) (bar)
100 38 740 51.0
200 93 675 46.5
300 149 655 45.2
400 204 635 43.8
500 260 600 41.4
600 316 550 37.9
650 343 535 36.9
700 371 535 36.9
750 399 505 34.8
800 427 410 28.3

Asbestos free packing or flexible graphite as per request.
The gate valves are delivered protected against corrosion. The raised faces on the pipe flanges are protected against damage during shipment.
Cast on the gate valve bodies are the Lunkenheimer Trade Mark, nominal pressure class, nominal size, and material designation all in accordance with MSS SP-25.


Tests
The gate valves are hydrostatically and pneumatically tested in accordance with Table No. 2, meeting the requirements of API 598.

Note: Other flange facings and finishes in accordance with ANSI B16.5 are available on request. Butt weld ends will be furnished in accordance with ANSI B16.25, unless otherwise specified.


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