Swagelok® Stream Selector System for Process Analyzer Applications—SSV Series
The Swagelok stream selector system (SSV series) is a modular assembly designed for process analyzer sampling systems that provides double-block-and-bleed (DBB) operation in a single compact module. The SSV assemblies can accommodate from 2 to 12 process streams, with each stream controlled by a DBB module.
SpecificationsPressure Rating
Temperature Range
Actuation Pressure
Bore Size
Flow Coefficient
Seal Material
End Connections |
Up to 250 psig (17.2 bar)
20 to 300°F (–6 to 148°C)
40 to 150 psig (2.8 to 10.3 bar)
0.125 in. (3.2 mm)
0.20
Fluorocarbon FKM, Simriz®, Kalrez®
1/8 in. female NPT,
Swagelok MPC (ANSI/ISA 76.00.02-compatible) |
Features
- Modular design offers ease of installation and maintenance.
- Built-in pneumatic actuator provides repetitive shutoff with fewer potential leak points than conventional systems.
- Distinctive vented air gap prevents mixing of pneumatic actuator supply and system fluid under pressure.
- Compact design saves cabinet space and reduces internal volume.
- Stainless steel construction provides enhanced corrosion resistance.
- Optional integrated atmospheric reference vent (ARV) is available.
DBB Module
Each individual DBB module consists of a pneumatic actuator and a flange. Multiple DBB modules are connected with base blocks to create the stream selector system.
- One-piece, integrated DBB module allows for easy removal without the need to disconnect process lines.
- Normally closed, double block-and-bleed design consists of:
- Double-block valves that control system fluid and eliminate cross-contamination of sample streams
- Bleed valve that is tied to a common vent for all DBB modules
- Visual indicator provides easy visual and tactile indication of open position with large, raised green ring.
- Interchangeable colored caps provide stream identification. (Standard color is blue.)
Base Blocks
- Types of base blocks include standard, outlet, end (left and right), and ARV (optional)
- Blocks are attached together with a patent-pending insert and screw system to create a fluid path.
- Blocks contain all the fluid connections in one location.
Options
Atmospheric Reference Vent The integrated atmospheric reference vent (ARV) is positioned prior to the analyzer and attached to the outlet of the stream selector system. It is designed to equalize the sample loop pressure to atmospheric pressure just prior to the sample injection. This ensures a constant sample pressure in repetitive analyses.
MPC-Compatible Interface Option
The Swagelok SSV system is offered with an optional MPC-compatible interface for up to ten streams. See the Swagelok Modular Platform Components catalog.
Vented Air Gap Threaded Test Port An optional 1/8 in. female NPT threaded test port is available for the vented air gap.
Testing
Every Swagelok SSV system is factory tested at room temperature with nitrogen at 250 psig (17.2 bar). Each double block-and-bleed seat has a maximum allowable leak rate of 0.1 std cm3/min. Shell testing is performed to a requirement of no detectable leakage with a liquid leak detector.
Cleaning and Packaging
All Swagelok SSV systems are cleaned and packaged in accordance with Swagelok Standard Cleaning and Packaging (SC-10).
Replacement Part Kits
Kits are available for stream assemblies, modules, base blocks, flanges, O-rings, caps, and screws.