Data Sheet

ManualsBrandsEmerson ManualsControl ValvesEmerson Fisher V250

V250 Valve

Product Bulletin

51.3:V250

November 2007

Specifications (continued)

Approximate Weights

See table 2

Options

 Line flange bolts,  Sour service trim

(3)

 Buried service actuator adaptation, and  Dual

seal configuration for bi-directional shutoff (this

configuration incorporates a tapped and plugged

connection which can be used in a double block

and bleed system to test seal integrity),

 Live

Loaded PTFE Packing

1. The pressure or temperature limits in this bulletin and any applicable standard or code limitations should not be exceeded.

2. The maximum allowable shutoff pressure drops are further limited for the following constructions. The NPS 12 with S20910 drive shaft is limited to 128 bar (1862 psi) from –46 to 59°C (–50

to 139°F) and to 103 bar (1490 psi) at 93°C (200°F). The NPS 16 with 17-4PH steel, with 2-1/2 inch splined driveshaft is limited to 1000 psi (69 bar), and with the S20910, 2-1/2 inch splined

drive shaft is limited to 55 bar (795 psi) at all service temperatures. The NPS 24 with S20910 drive shaft is limited to 92 bar (1336 psi) at all service temperatures.

3. See table 1 for sour service trim materials.

OUTLET

BALL

SEAL

VALVE

BODY

FOLLOWER

SHAFT

SEAL PROTECTOR

RING OR FLOW RING

VALVE

INLET

BALL

SEAL

CARRIER

DRIVE SHAFT

SEE VIEW A

MAIN SHAFT

BEARING

BALL

VIEW A

SEAL DETAIL

OUTLET SIDE OF VALVE BODY FOR

OPTIONAL DUAL SEAL CONSTRUCTION

W7170-1 / IL

W7169-1 / IL

Figure 2. Sectional View of Design V250 Valve