Siemens Building Technologies Powertop 658 Series Globe Catalog Page

Two-Way Angle Union Valves

1 to 1-1/4" Angle Female x Union Male
Normally Open

Powertop

658 Series Globe

Description

Designed to control the ow of steam, water, and ethylene
glycol solutions, the Powertop 658 Series Two-way Angle
Union Valves are available with normally open action.

Features

• Replaceable soft disc provides tight shut-off

• Actuator can be rotated to facilitate piping control from
different directions

• Stainless steel valve stem to reduce friction
and corrosion

• Large diaphragm area for control accuracy and tight

close-off

• Equal percentage plugs and long stroke
for controllability

• Removable actuator for ease of servicing

Normally Open Valve with Angle Union Outlet.

658 Powertop Two-Way

Applications

The Powertop 658 Series Angle Union valves are
recommended for control of steam, water and ethylene
glycol solutions for controlling unit ventilators, reheat coils,
fan coil units, induction units, and duct coils.

A-241

Valves

www.usa.siemens.com/hvac

658 Powertop Two-Way Angle Specifications

A-242

Valve Size ......................................................1" (25 mm), 1 1/4" (32 mm)

Valve Body Style ...................................................................Angle Union

Valve Action .............................................................Normally Open (NO)

Valve Stroke ........................................................................1/2" (15 mm)

Valve Body Rating ..........................................................ANSI Class 125

Diaphragm

Effective Area .............................................................. 11.2 in.2 (71 cm2)

Material..................................................................................EP Rubber

Ambient Temperature Range .......................... 35 to 140°F (2 to +60°C)

Maximum Air Pressure ................................................. 30 psi (207 kPa)

Controlled Medium ....................Steam, Water, Ethylene Glycol Solution

Flow Characterization .................................................Equal Percentage

Maximum Medium Temperature ...................................... 250°F (121°C)

Maximum Medium Inlet Pressure

Water ................................................. Refer to Valve Body Rating Table

in Reference Section.

Saturated Steam ......................................................... 15 psi (103 kPa)

Maximum Recommended Differential Pressure
for Modulating Service

Water ............................................................................ 25 psi (170 kPa)

Steam .......................................................................... 15 psi (103 kPa)

658 Powertop Two-Way Angle Product Ordering

Valve Size

Normally Open

1" (25 mm) 10 100 psi (689 kPa) 2 to 6 psi (14 to 41 kPa) 658-0012

1-1/4" (32 mm) 16 58 psi (400 kPa) 2 to 6 psi (14 to 41 kPa) 658-0014

Cv Close-offs Spring Range Part No.

Dimensions and Weights

Valves

Dimensions shown in inches (mm).

Valve Size

1" (25 mm) 5-1/2" (140 mm) 4-15/16" (125 mm) 1-3/4" (44 mm) 3-1/8" (79 mm) 5.0 lb. (2.3 kg)

1-1/4" (32 mm) 5-1/2" (140 mm) 5-1/2" (140 mm) 2" (51 mm) 4-3/8" (111 mm) 6.0 lb. (2.7 kg)

Accessories & Service Kits

Dimensions

WeightA B C D

A-257

www.usa.siemens.com/hvac