GE Globe Control Valves masoneilan 28000 series Service Manual download pdf (Page 11)

28000 Series Varipak Control Valves | 11

Bellows Seal Varipak

Figure 9A:

Bellows Seal Varipak

28000 BS Series

For applications that require no leakage at the packing box, the Varipak

valve is available with a bellows seal. This design is ideal for applications

that involve the handling of ﬂammable, toxic, or explosive ﬂuids.

Dimensions – inches (mm)

2 holes tapped

5/16" – 18 UNC

depth 11 (7/16")

Rated C

Range

Body Rating

Seat

Leakage

Operating

Pressures

Materials

2.3 to 0.0040

(trim No. 1 to 9)

ASME Class 150-600

ISO PN 10-100

Class IV

800 psi at +212°F

(55 bar at +100°C)

580 psi at +392°F

(40 bar at +200°C)

Body

ASTM A 182 Gr. F 316L

Optional: A182 Gr. F 316

Plug/Bellows

Subassembly

Plug and Seat: Standard Materials

Bellows Assembly: 316L St. St.

Viton

O-rings

Other Parts Standard Construction: see page 6

Figure 9B:

Plug and Bellows Subassembly

Provide a removal clearance of 5.5 inches (140 mm)

Optional

1/2" NPT

3/4" NPT

1" NPT

10.24

(260)

4.13

(105)

Handwheel (optional)

11.10

(282)

12.80

(325)

1.30

(33)

8.56

(217.5)

4.02

(102)

Speciﬁc Characteristics

1 2 ... 6 7 8 9 10 11 12 13 14 15

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GE Globe Control Valves masoneilan 28000 series Service Manual Page 11

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