GE Globe Control Valves masoneilan 28000 series Service Manual download pdf (Page 3)

28000 Series Varipak Control Valves | 3

Microﬂow Control Innovation

Optimized C

Characteristics

The VariPak valve outshines conventional microﬂow valves with its sup-

port of a wide range of nominal C

values (from 0.0016 to 3.8), using only

eight plugs and ﬁve seats.

Precise C

Calibration and Selection - C

and

Valve Sizes

Trim

No.

Flow Coefﬁcient C

Critical

Flow

Factor

With Adjustable C

Function

Without

Adjustable

Function

.5"

(15mm)

.75"

(20mm)

(25mm)

Min.

Risk-

Free

(3)

Max.

• • • 9 0.0016 0.0020 0.0024 0.0028 0.0032 0.0036

0.0040 0.0040

0.85

• • • 8 0.004 0.005 0.006 0.007 0.008 0.009

0.010 0.010

0.85

• • • 7 0.010 0.013 0.016 0.019 0.021 0.023

0.025 0.025

0.85

• • • 6 0.020 0.025 0.030 0.035 0.040 0.045

0.050 0.050

0.85

• • • 5 0.04 0.05 0.06 0.07 0.08 0.09

0.10 0.10

0.85

• • • 4 0.10 0.13 0.16 0.19 0.21 0.23

0.25 0.25

0.90

• • • 3 0.25 0.30 0.35 0.40 0.45 0.50 0.55

0.60 0.60

0.90

• • • 2 0.5 0.6 0.7 0.8 0.9 1.0 1.1

1.2 1.2

0.92

• • • 1 1.9 1.1 1.3 1.5 1.7 1.9 2.1

2.3 2.3

0.92

• • 0 1.5 1.9 2.3 2.6 2.9 3.2 3.5

3.8 3.8

0.92

(1) Flangeless, ﬂanged or threaded connections.

(2) Flangeless or threaded connections.

(3) The “Risk-free” setting allows for easy valve capacity adjustments in the ﬁeld to meet changing service conditions.

Figure 3: Flow Coefﬁcient Adjustment

(2) (1)

1 2 3 4 5 6 7 8 ... 14 15

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GE Globe Control Valves masoneilan 28000 series Service Manual Page 3

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