
Anhydrous Liquid & Vapor Pump Outs
Our expert team uses a proven push/pull method to safely pump out both liquid and vapor forms of anhydrous ammonia, ensuring your industrial refrigeration and cooling systems are free from any ammonia residues that could compromise safety or compliance.
What's included
Scope of work
- ▸Push/pull recovery of both liquid and vapor phase anhydrous ammonia
- ▸Complete decommissioning support for retired refrigeration systems
- ▸Ideal for cold storage, food processing and packing house facilities
- ▸Documentation to support PSM / RMP compliance records
- ▸Residual vapor draw-down before hot work, demolition or retrofit

How it works
Our process
- 01
Site survey
We walk the system, review P&IDs and confirm inventory volumes and connection points.
- 02
Isolation
Vessels are isolated and lock-out/tag-out is verified with your facility team.
- 03
Liquid pump out
Liquid anhydrous ammonia is transferred to our DOT-compliant tankers using a closed-loop push/pull setup.
- 04
Vapor recovery
Remaining vapor is drawn down to target pressure so the system can be safely opened.
- 05
Haul away
Recovered ammonia is transported, stored or relocated per your instructions.
Where we provide this service
Other services
Aqueous Ammonia Pump Outs
Trust our specialists to safely and effectively pump out aqueous ammonia from your systems with minimal disruption.
Ammonia Transfer Service
Facilitate safe and efficient ammonia transfer within your facility or to another location.
24/7 Emergency Ammonia Service
Rely on our 24-hour emergency service to address urgent anhydrous and aqueous ammonia-related issues, anytime.
Metered Ammonia Supply & Delivery
Bulk anhydrous ammonia supply delivered by our metered truck, with precise custody-transfer measurement of every pound loaded into your tank.
Core Metering Technology
Coriolis mass flow metering with temperature and pressure compensation, so every pound of ammonia transferred is measured accurately, not estimated.
Talk to a specialist
Need anhydrous liquid & vapor pump outs?
Let REST handle your anhydrous and aqueous ammonia needs.