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Item # 6012-6-UT, 6" Class 600 Gate Valve

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

These gate valves are used in pipelines and in facilities for water, steam, non-aggressive gases, naphtha, naphtha derivatives and in other power and process installations, in operating conditions up to 800°F (427°C), In accordance with Table No. 1 Data included in this Table meet the 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 0.25" (6.4mm) raised faces, in accordance with ANSI B16.5 (See Note). The raised faces of the pipe flanges are machined in accordance with MSS SP-6. The wedges are or the single wedge flexible type providing greater sealing capability and lower torque requirements. Operation is performed by a non-rising handwheel; 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 or air motor operating units.

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

The seat rings are seal welded in the body and are made of carbon steel with hard faced seat 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


Valve Size

6 in

Face to Face (L)

22.00 in

Turns to Open


Handwheel Dia.

18.00 in

Approx. Weight

740 lb

Test Pressure

Hydrostatic (Seat) - 1650 psig (112.4 bar-gage)
Hydrostatic (Shell) - 2250 psig (153.4 bar-gage)

Pneumatic (Seat) - 80 psig (5.5 bar-gage)


Dia. (N)

6.00 in

Dia. (S)

6.00 in

Line Flange

Dia. (D)

14.00 in

Min. Thickness (b)

1.88 in

Bolt Circle (K)

11.50 in

Hole Dia. (d)

1.12 in

Raised Face Dia. (g)

8.50 in


Open (H)

42.50 in

Closed (H)

35.80 in

Stem Dim. (dv)

1 1/2 in

Line Flange Bolts

No. of Bolts


Bolt Size

1 in

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 A216 Gr. WC8 w/13Cr Facing
4 Stem ASTM A582 Type 410
5 Backseat Bushing ASTM A276 Type 410
6 Gasket Spiral wound gasket asbestos free
7 Bonnet ASTM A2l6 Gr. WCB
8 Packing Asbestos - Free
9 Gland ASTM A2I Gr. WCB
10 Yoke Nut ASTM A439 Type D2
11 Yoke Nut Retaining Nut ASTM A536 Gr. 65-46-12
Yoke Cap 6" 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 Al93 Gr. B7
17 Body-Bonnet Stud Bolt Nut ASTM A194 Gr. 2H

Pressure-Temperature Rating
Temperature Working pressure
(ºF) (ºC) (psi) (bar)
100 38 1480 102.0
200 93 1350 93.1
300 149 1351 90.7
400 204 1270 87.7
500 260 1200 82.8
600 316 1095 75.5
650 343 1075 74.1
700 371 1065 73.4
750 399 1010 69.6
800 427 825 56.9

Asbestos free packing or flexible graphite as per request.
Valves nominal size 6" and larger are equipped with bearing type yoke nut to facilitate operation at higher pressures.
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.

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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