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Many LPG piping systems do not provide ideal NPSH conditions for liquid pumps. As a result, the poor NPSH conditions lead to excessive pump maintenance. Since compressors are only exposed to vapors, they are not affected by poor NPSH conditions.
NPSH is defined as the total head of fluid at the centre line of the impeller less the fluid’s vapour pressure.
Many LPG pressurized tanks such as railcars and buried tanks have top unloading connections. A compressor is the perfect solution for transferring liquids to and from these types of tanks.
Applications
Ø Propane cylinder filling Bulk transfer
Ø Truck/barge/railcar unloading
Ø Liquid transfer/vapor recovery
Ø Tank/railcar unloading
Ø Agricultural ammonia
Ø Barge unloading
Ø Tank/railcar unloading
Ø Agricultural ammonia
Ø Tank evacuation for maintenance
Ø LPG/butane/ammonia
Ø Inert gas pad
Features and Benefits
| Self-lubricating piston rings: | Non-lubricated operation to minimize oil in gas |
| NPT or Class 300 RF connections: | Versatility for your application |
| Multiple mounting configurations: | Versatility for your application |
| High efficiency valves: | Quiet, reliable operation |
| Reversible oil pump: | Allows operation in either direction |
| Simplified top down design: | Routine maintenance is minimally invasive |
Operating Specifications
| Model | 91 | 291 | 491 | 691 |
| Bore of cylinder inches (mm) | 3.0 (76.2) | 3.0 (76.2) | 4.0 (101.6) | 4.5 (114.3) |
| Stroke inches (mm) | 2.5 (63.5) | 2.5 (63.5) | 3.0 (76.2) | 4.0 (101.6) |
| Piston displacement cfm (m3/hr) | ||||
| minimum @ 400 RPM | 4.1 (7.0) | 8.2 (13.9) | 17.5 (29.7) | 29.5 (50.0) |
| maximum @ 825 RPM | 8.4 (14.3) | 16.9 (28.7) | 36.0 (61.2) | 60.7 (103.2) |
| Maximum working pressure psig (bar g)1 | 335 (23.1) | |||
| Maximum brake horsepower (kW) | 7.5 (5.6) | 15 (11.2) | 15 (11.2) | 45 (33.6) |
| Maximum rod load lb (kg) | 3,600 (1,632.9) | 3,600 (1,632.9) | 4,000 (1,814.4) | 7,000 (3,175.1) |
| Maximum outlet temperature °F (°C) | 350 (177) | |||
| Maximum flow—propane gpm (m3/hr) | 50 (11.4) | 101 (22.9) | 215 (48.8) | 361 (82.0) |
Equipment Type and Options
Ÿ Single-acting, vertical, reciprocating piston type vapor compressor
Ÿ Single packed rod
Ÿ NPT or Class 300 RF connections
FAQ 1. What is the term of delivery? Answer: EXW, FOB, CIF. 2. What is the payment term? Answer: FOB,CIF; T/T, 30% in advance and 70% balance before shipping. 3. How about the delivery time? Answer: Commonly, it takes 15~35 days of production after the receipt of your advance down payment and 7 days for delivering after full payment. 4. What is the warranty time? Answer: 12 month from the date of supply for vehicles; technical support and spare parts supply liftlong. 5. What is the packaging? Answer: bulk ship, ro-ro ship, container ship, flat rack, etc. Professional, economic and safe methods and measures to package trucks or equipments. 6. Can we supply samples if customers need sample in advance? Answer: If we just right have the sample in stock, we can supply it for you. But the customer need pay for the cost. 7. How to establish a long term cooperation? Answer: We try our best to guarantee great quality and good price policy for our old customers to ensure the benefits of our customers. Moreover, we respect every customer and sincerely do business, making friends with them, no matter who they are, wherer they are from. 
A: We are a leading manufacture of pressure vessels,bobtails,trailers, trucks, and skid mounted stations,and spare parts. Welcome to visit us in Suizhou city, the production base of Chinese special purpose vehicles.
2. Q: Where is your factory located?
A: We are located in Suizhou City,Hubei Province,China
3.Q:How can i visit there?
A:Welcome to the factory for inspection. You can fly to Wuhan Tianhe Airport, and our company will arrange a special car to pick you up.
4.Could you customize exactly according to my requirements?
A:Yes. We have professional R&D team, we can produce the product exactly according to your requirements.
5.Q: Do you provide certification that we need?
A:We can provide various certifications associate. Such as BV,DOT, ADR, SASO and so on.
6.Q: what's your payment terms?
A:T/T& L/C are preferred.
7.Q:Do you arrange shipment for the vehicles?
A:Yes,we can arrange shippment based on trade terms.
8. Q:What service can I get from you?
A:We provide lifelong tracking service and one year free warranty for all of our products. Meanwhile we provide free training and technical support to guide you repair your product. If need, we will also send original spare parts free of charge by air.
9.Q:How is the packing?
A:All the packing comply with exporting standard.
10.Q:How long is the lead time?
A:20-25 working days.
For other questiones,we will reply you ASAP after receiving your consult!
