HOT-TAP Valve Retraction Assemblies

HOT-TAP Valve Retractable Assemblies, 3rd Generation (3GVR)

1½” & 2″ 316 Stainless Steel (316SS) HOT-TAP Assemblies for 5X31, 5X41, & 5X51 Series pH Sensors and ORP Sensors
Support for Insertion & Removal directly into a process tanks or pipes while process is running with support for pressures up to 100 psig

Shown above is a complete 2″ NPT HOT-TAP Valve Retractable Assembly with 316SS Sensor Holder, 36 Inch Extension Tube & 5X31 Series Sensor

2″ NPT Ball Valve Assembly Only Shown Above
(without compression fitting or insertion tube assy)

2″ NPT Ball Valve Assembly Only Shown Above in Special Dual Port Purge Flush Configuration
(without insertion tube assy back view)

Complete HOT-TAP Valve Retractable Assembly Shown Above, Various Views

Details on just the 316SS sensor holder (on left) fitted with the short 12 inch extension tube (on right). These two parts fitted together constitute and insertion tube assembly. Also shown is the 5X31 series sensor (far left) as well as the 1″MNPT X 1.00″O.D. compression fitting and sealing cable glands. For use with the HOT-TAP valve retractable style the extension tube would be longer 36, 48 or 60 inch length as necessary for the given installation.

Integral bridge box installed on extension tube for easy quick disconnect sensor maintenance with Q7M/Q7F snap connector system for analog pH/ORP/ISE/DO sensors with integral preamplifiers or HiQ4M/HiQ4F snap connector system for smart digital sensors (not shown)

Download the Complete Printable Single & Double Ball Valve Retraction Product Brochure


 Specifications
HOT-TAP Valve Retractable Assemblies, 3rd Generation (3GVR)

1½” & 2″ 316 Stainless Steel (316SS) HOT-TAP Assemblies for 5X31, 5X41 & 5X51 pH Sensors & ORP Sensors
Secure Insertion & Removal directly into tank or pipe while process is running at pressures up to 100 psig

  • Fast & Easy Insertion & Removal of robust 5X31, 5X41 & 5X51 series pH sensors and ORP sensors for superior lifetime and performance in HOT-TAP valve retractable installations
  • Side Purge Port and Vent Valve Included for pressure relief of high pressure or dissolved gas containing process media
  • Sturdy 1.25″X1.00″ step between sensor holder and extension tube ensures complete blow-out protection for safe operation up to 100 psig
SpecificationValue
Temperature Range-30 to 150 Degrees Celsius (-22 to 302 Degrees Fahrenheit)
NOTE: Do not use any sensor past its recommended Temperature Rating
Pressure Range1 to 100 psig (6.9 to 690 kPag absolute)
NOTE: Do not use any sensor past its recommended Pressure Rating
Operating pH range-0.5 to 14.5 max range
NOTE: Do not use any sensor past its recommended pH Rating
Dissolved Gasses ResistantChlorine, Chlorine Dioxide, NOx, Ozone, Hydrogen Sulfide, Hydrogen Cyanide (standard)
Inquire about other gasses
Process Connection316 SS: 1 ½” or 2″ MNPT
Ball Valve For Process IsolationFull Port 316 SS with Teflon Seats & Ferrules; 1 ½” & 2″ FNPT
Connecting Nipple with purge port and vent valve316 SS: 1 ½” & 2″ MNPT X 6″ Pipe Tee with ½” MNPT Ball Valve for Pressure Relief (Purge Port & Vent Valve)
1 ½”-1″, 2″-1″ Reducer & 1″ Compression Fitting316 SS
Compression Fitting FerruleTeflon standard; Application Specific Ferrules available, Inquire to ASTI
Gas/Pressure SealO-Ring, Viton # 214 standard; Application Specific O-Rings such available, Inquire to ASTI
Back End Blowout Protection
(Optional Wire Rope Lanyard Not Shown in Photos – Not Required for Most Installations)
Flats on 1/2″MNPT cable glands stop-out against compression fitting to prevent accidental slippage into process
Front End Blowout Protection1.25″X1.00″ step between sensor holder and extension tube ensures rugged blow-out protection for safe insertion and removal at pressures to 100 psig
Insertion Depth past Process Connection18 inches (~46 cm) with 36 inch extension tube
30 inches (~76 cm) with 48 inch extension tube
42 inches (~107 cm) with 60 inch extension tube
Overall Length of Double Ball Valve Assembly Only22 inches Maximum (~ 56 cm)


 Schematics
HOT-TAP Valve Retractable Assemblies, 3rd Generation (3GVR)

1½” & 2″ 316 Stainless Steel (316SS) HOT-TAP Assemblies for 5X31, 5X41 & 5X51 pH Sensors & ORP Sensors
Secure Insertion & Removal directly into tank or pipe while process is running at pressures up to 100 psig

  • The schematics linked below provide all dimensional details necessary to ensure that the assembly will interface suitably with your process connections
  • Please note that all HOT-TAP assemblies must be installed with at least 15 degrees downward angle for the sensor installation to ensure proper operation
  • Always contact ASTI factory for specific recommendations for your planned process installation prior to specifying parts or purchase
Supporting LiteratureHotlink for Document
Complete HOT-TAP Cross-Sectional Installation SchematicComplete HOT-TAP Assembly Cross-Sectional Drawing and Installation Schematics
Details of Sensor Holder & Extension Tube Parts (together called the insertion tube assembly)Cross Sectional & Isometric Details of Sensor Holder & Extension Tube Parts
Written installation procedures for insertion & removal of assembly from processDouble Ball Valve Installation and Operations Instructions

Various close-up images are below for better visualization of the HOT-TAP assembly features:


Documentation
HOT-TAP Valve Retractable Assemblies, 3rd Generation (3GVR)

Complete HOT-TAP Assembly Cross-Sectional Drawing and Installation Schematics

Cross Sectional & Isometric Details of Sensor Holder & Extension Tube Parts

Double Ball Valve Installation and Operations Instructions

HOT-TAP Valve Retractable Sensor Dimensional Drawing

HOT-TAP Valve Retractable Installation Procedure into 316SS Holder

Download the Complete Printable Product Brochure (PDF)


HOT-TAP pH/ORP Sensors
pH Sensors & ORP Sensors for HOT-TAP Valve Retractable Hardware, 3rd generation (3GVR)

Description of pH/ORP Sensor Series
KYNAR Junction for all 5XX1 Sensors
Sensor Body Housing RADEL®
Poly-Phenyl-Sulfone, PPSU
Sensor Body Housing KETASPIRE®
Poly-Ether-Ether-Ketone, PEEK
Sensor Body Housing RYTON®
Poly-Phenylene-Sulfone, PPS
General Purpose503150415051
High Temperature Resistant513151415151
Ultra High Temperature Resistant52315241N/A
Slurry & Viscous Material Resistant533153415351
Acid, Fluoride & HF Resistant543154415451
Paper & Pulp Resistant553155415551
Sulfide Resistant563156415651
Aggressive Dissolved Gas &
Volatile Organic Solvent Resistant
57315741N/A
Oxidation Reduction Potential a.k.a. ORP583158415851
Saturated Sodium (Brine) Resistant593159415951

® RADEL, KETASPIRE and RYTON are registered trademarks of Solvay