Flowserve Valtek Beta Positioners for Control Valves Manual do Utilizador descarregar pdf (Página 14)

24-14

Flowserve Corporation, Valtek Control Products, Tel. USA 801 489 8611

Table III: Linear Actuator Follower Arms

Actuator Stroke Spud Follower

Size (inch) (inch) Arm Kit

/4 2.00 10043879 *

(3)

/8 2.00 10043879 *

(3)

/2 2.00 10037613

/4 - 1

/2 2.00 10037613

/4 2.00 10053538

(3)

/4 - 1

/2 2.00 10037613

/4 - 1

/2 2.62 10044111

50 3 2.62 10037614

100 / 200

/4 - 3 2.62 - 2.88 10037614

100 / 200

/4 - 4 3.38 - 4.75 10037615

100 / 200 5 - 8 3.38 - 4.75 10037616

* Requires the use of stem clamp number 10043664

(3) Use short-stroke positioners with: 25 sq. in. actuator,

/4,

/8 with

stroke; 50 sq. in. actuator,

/4-inch stroke.

Ordering Information

The following information is provided to order a new Beta

positioner or to adapt an existing positioner from one

application to another.

Linear Actuators

When ordering a positioner for a linear actuator, select

two part numbers; one each from Tables 2 and 3.

Table II: Positioner Model with 3-15 psi

or 4-20 mA span for Linear Actuators

(1)

Air P/P NT 3000

Action Module I/P Module

Air-to-Open

(2)

10005334 10121770

Air-to-Close 10005338 10121771

Air-to-Open

(2)

10005376 10121773

Air-to-Close 10005377 10121750

(1) Can be split ranged 2:1 or 3:1 without additional parts. Also

available are positioner models with 6-30 psi or 10-50 mA

span and the same split ranges.

(2) The cam can be turned over in the field for opposite air action.

Stroke

Stand.

Short

Rotary Actuators

When ordering a positioner for a rotary actuator, select

two part numbers; one from Table IV and one from Table

V which includes part numbers for the follower arm.

Table IV: Positioner Model with 3-15 psi

or 4-20 mA span for Rotary Actuators

(1)

Valve Installed P/P NT 3000

Type Cam

(4)

Module I/P Module

(5)

Valdisk or Shear Stream

(4)

10005708 10121775

(4)

10005709 10121776

MaxFlo

Air-to-Open B (eq. per.) 10050189 10121783

Air-to-Close B (eq. per.) 10099969 10123232

Air-to-Open C (Linear) 10050192 10123230

Air-to-Close C (Linear) 10099974 10123833

(1) Can be split ranged 2:1 or 3:1 without additional parts. Also

available are positioner models with 6-30 psi or 10-50 mA span

and the same split ranges.

(4) The cam can be turned over in the field to the opposite side “B”

or “C”. To select the correct positioner model choose either “B”

or “C” from the “Cam Characteristic” chart in Table I.

(5) FM/CSA Explosion Proof and Intrinsically Safe rating.

Actuator Size Follower Arm

(Square-inches) Part Number

25 10034715

50 10034714

100 / 200 10033767

When installed on a rotary valve, the signal vs. C

rela-

tionship can be equal percentage or linear, based on air

action as well as cam characteristics. See Table 1.

Several kits are available to convert the Beta positioner

control signal from either pneumatic to I/P, or from I/P to

pneumatic.

Table VI: Conversion Kits

(1)

Module Number

I/P to Pneumatic 10033937

Pneumatic to I/P

(FM/CSA Exp. Proof. I.S.) 10121462

(Cenelec I.S. w/M20 connection) 10124651

(Cenelec I.S. w/1/2" NPT connection) 10124602

(Cenelec Exp. Proof w/M20 connection) 10125444

(Cenelec Exp. Proof w/1/2" NPT connection) 10128543

(1) Conversion kits include I/P or pneumatic module, two screws

(item 67 or 73), two O-rings (item 69), and a standard gauge

(item 6). See Figure 17 for reference to item numbers.

Table V: Follower Arms - Rotary Actuators

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 20

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