Emerson Process Management 99 2

Type 99

Specifications

Body Size and End Connection Styles

2-inch (DN 50) body with NPT; CL125, CL150, CL250, or CL300 flanged; or SWE

Maximum Allowable Inlet Pressure(1)

160 psig (11,0 bar): When using Type 61LD pilot

400 psig (27,6 bar): When using Types 61L/

61H pilots

600 psig (41,4 bar): Type 61HP pilot (5/8-inch (15,9 mm) orifice maximum)

1000 psig (69,0 bar): Type 61HP pilot, along with Type 1301F pilot supply regulator and Type H110 relief valve (1/2-inch (12,7 mm) orifice only)

Outlet (Control) Pressure Ranges

See Table 1

Approximate Proportional Bands

See Table 2

Maximum Allowable Pressure Drop(1)

See Table 3

Maximum Actuator Pressures(1) Operating: 100 psig (6,90 bar) Emergency: 110 psig (7,58 bar)

Maximum Pilot Spring Case Pressure for Pressure Loading(1, 2)

Types 61L, 61LD(3), and 61LE(4): 50 psi (3,45 bar)

with special steel closing cap

Types 61H and 61HP: 100 psi (6,90 bar)

Minimum Differential Pressure Required for Full Stroke

See Table 3

Maximum Rated Travel

1/4-inch (6,35 mm)

Temperature Capabilities(1)

With Nitrile (NBR) / Neoprene (CR):

-20° to 180°F (-29° to 82°C)

With Fluorocarbon (FKM):

0° to 300°F (-18° to 149°C)

1. The pressure/temperature limits in this Instruction manual and any applicable standard or code limitation should not be exceeded.

2.For stability or overpressure protection, a pilot supply regulator may be installed in the pilot supply tubing between the main valve and pilot.

3.Type 61LD construction has narrower proportional band than does the standard Type 61L pilot.

4.Type 61LE construction has broader proportional band than does the standard Type 61L pilot.

Table 1. Outlet Pressure Ranges

1. Type 61LD construction has narrower proportional band than does the standard Type 61L Pilot.

2. Type 61LE construction has broader proportional band than does the standard Type 61L Pilot.

Table 2. Proportional Bands