Ralston Instruments QTVC-3FBA-RG-2M-1M Volume Controller

Overview

The Ralston Instruments QTVC-3FBA-RG-2M-1M is a compact pressure volume controller for precise calibration of pressure instrumentation using nitrogen gas. It features a proprietary pressure-balanced fine adjustment piston providing extremely precise finger-tip control from 0.03 psi to 3000 psi (2 mbar to 210 bar). The unit combines fine adjust, fill, balance, and vent valves in one lightweight, compact assembly with BSPP gauge adapter for European standard connections.

Key Features

• Proprietary pressure-balanced fine adjustment piston for precise control at 0.03 psi or 3000 psi
• Fine adjust, fill, balance, and vent valves integrated into one lightweight, compact unit
• Soft-seated valves for precise filling and venting
• Quick-test system connections require no thread sealant or wrench
• Low volume hose, gauge adapter, and process connections attach without tools
• G 3/8″ female BSPP (ISO 228/1) gauge adapter for European standard compatibility
• Supplied with 2m and 1m Quick-test hoses with brass hose ends
• Included laboratory stand and optional field strap
• Made in U.S.A.

Applications

• Calibration of low-pressure instrumentation
• Calibration of high-pressure instrumentation
• Laboratory pressure testing
• Field instrument verification and maintenance

Included Accessories

• QTVC Assembly (volume controller)
• Gauge Adapter — G 3/8″ female BSPP (ISO 228/1) × female Quick-test, brass
• Quick-test hose — 2 m (6.6 ft) long with brass hose ends
• Quick-test hose — 1 m (3.3 ft) long with brass hose ends
• Hose Adapter — G 1/4″ female BSPP (ISO 228/1) × male Quick-test, brass (×2)