HERMetic Sampler GT4 Gas-Tight Portable Large Volume Sampler (1.8 Liter)
The Enraf Tanksystem HERMetic Sampler GT4 is a high-end, portable 4-inch big volume sampler for strictly closed, gas-tight liquid sampling at marine tank vessels, offshore rigs and shore terminals. The GT4 is intended for activities where the normal 0.5 litre samples are not representative. It has a large 1.8 litre bottle capacity to capture sufficient and highly representative cargo volume in one run.
It directly anchors onto a standard 4-inch HERMetic vapour control valve (deck valve) and its fully sealed construction means no volatile organic compound (VOC) emissions escape to the atmosphere. This zero-vapor-release architecture protects personnel on board ships from deadly poisonous vapours, prevents inadvertent cargo contamination and meets the most demanding environmental standards.
Model Details:
- Manufacturer: Enraf Tanksystem SA (A Honeywell Company)
- Brand: Honeywell Enraf Tanksystem
- Model Name: HERMetic Sampler GT4
- MPN: SGT-4-1.8L
- Country of Origin: Switzerland

Technical Specifications
| Attribute | Specification |
|---|---|
| Bottle Capacity | Approximately 1.8 Liters (60.8 oz) |
| Sampling Operation | Closed / 100% Gas-Tight |
| Valve Connection | 4-inch (100 mm) HERMetic Deck Valve |
| Standard Tape Length | 30 meters (100 feet) |
| Optional Tape Length | 50 meters (164 feet) |
| Tape Graduation | Dual Metric / English (Millimeters and Inches) |
| Maximum Tank Overpressure | 0.3 bar (4.4 psi) |
| Unit Net Height | 770 mm (30.3 inches) |
| Unit Weight | 8.1 kg (17.8 lbs) |
| Housing Material | AISI 316 Stainless Steel & Rilsan-Coated Aluminum (Full Stainless Steel on request) |
| Gasket / Seal Material | High-performance FFKM (Fluorocarbon) Chemical-Resistant Gaskets |
| Hazardous Area Certification | ATEX II 1 G Ex h IIB T6 Ga (KEMA 06ATEX0027) / IECEx |
| Regulatory Compliance | API MPMS Chap 17.11, API MPMS Chap 8.1, IMO SOLAS, MARPOL 73/78, USCG |
Engineer Expert’s Tips: Eliminating Tape Jamming and Vapor Seep
On product tankers alternating between heavy crude oil and corrosive chemical parcels, residual cargo can cook inside the winder frame, causing the graduated tape to bind or degrade the internal FFKM gaskets.
Pro Tip: Always flush the inner sampler chamber with an appropriate cleaning solvent immediately after sampling highly viscous or corrosive cargoes. Before securing the unit in its storage chest, check the structural integrity of the three mechanical swing nuts on the base flange. If these nuts are unevenly torqued onto the 4-inch deck valve, the seal will warp, causing a subtle pressure drop and localized vapor leakage during high-overpressure conditions up to 0.3 bar.
Applications
- Commercial Crude Oil Tankers (VLCCs, Suezmax, Aframax)
- Chemical and Product Carriers
- Offshore Floating Production Units
- Custody Transfer Verification
- Onshore Petroleum Terminals & Refineries
30 DAYS RETURN POLICY
RETURNS ACCEPTED IN 30 DAYS. BUYER PAYS THE SHIPPING CHARGES. RESTOCKING FEES 20%.
NOTE:
IF THE ITEM COMES UNDER CUSTOMS, THE BUYER WILL BE FULLY RESPONSIBLE FOR DUTIES & OTHER CHARGES. WE AS A SELLER DO NOT ACCEPT THE RETURN AND REFUND IN THIS CASE. KINDLY CONNECT WITH US BEFORE PURCHASING AND ITEM OR IF YOU HAVE ANY OTHER QUERIES.
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PACKAGING
QUALITY PACKING FOR EACH PRODUCT. ASSURED SAFE & UNDAMAGED DELIVERY.
SHIPPING
FeDEX, DHL EXPRESS INTERNATIONAL SHIPPING.
TAXES & IMPORT DUTIES
DESTINATION COUNTRY ALL TAXES & DUTY TO BE PAID BY BUYER (NOT INCLUDED IN PRICE.
