Gas Powered Stop Valves Type Rak-W

• Media: Ammonia, Fluorine,Propane,Propylene,etc
• Temperature: -50c to +150c
• Actuator: Manual
• Material: Carbon Steel
• Structure: Angle Type Globe Valve
• Application: Refrigeration Valve
• Model NO.: RAK-W
• Standard: DIN, GB, ANSI
• Nominal Pressure: 2.8MPa
• Test Pressure: 4.2MPa
• Transport Package: Individual Box for Each Valve
• Trademark: AMG
• Origin: China
• HS Code: 8481804090
• Production Capacity: 50000PC/Year

Product Description

Technical parameters:

Nominal pressure: 2.8MPa         Applicable temperature:-50ºC~+150ºC

Test pressure: 4.2MPa                 Applicable medium:ammonia,fluorine,etc.

 

Characteristics:

- RAK-W are servo-operated valves normally open and pneumatic closed by means of refrigerant gas acting upon power piston,       taken from external high pressure line through a solenoid pilot AEVM type, mounted on the bonnet.

- RAK-W valves are designed to use with ammonia and other common fluorinated refrigerants,for use insuction lines or any application that need a valve normally open with automatic closing for short period.

- RAK-W valves can operate with △p=0 and in any position. But when the    

   valves are closed or open, there is a bleed of gas around the piston and    

   a small bore to allow open the valve when the high pressure gas stream     

   is closed. Nevertheless, if this small bleed cannot occur or you need a        

   valve without bleed around the piston,you must use our RACK normally

   closed valve,or the option RAK-2WS type,but with this last type you need

   to include two solenoid pilots, one to shut off the hot gas inlet flow, and 

   the second one to empty the chamber over the piston, and to avoid open 

   the valve again.

- The inlet of hot gas to solenoid pilot is through a nut & nipple connection 

   of 1/4" or 3/8"brazed or welded to nipple.

 

Name	Type	ize(mm)								Kv	Cv
		DN			φd	A	H	L	L1
RAK-W Pneumatic stop valve	RAK-W 25	1"	25	34	25	65	190	190	125	9	10.5
	RAK-W 32	1 1/4	32	42	32	70	215	245	170	16	19
	RAK-W 40	1 1/2	40	48	40	70	215	245	170	30	35
	RAK-W 50	2"	50	60	50	70	220	255	180	40	47
	RAK-W 65	3	65	76	65	85	245	295	220	75	88
	RAK-W 80	3"	80	89	80	95	265	330	250	140	164
	RAK-W 100	4"	100	108	100	125	300	415	330	200	234
	RAK-W 125	5"	125	133	121	120	405	350	/	207	240
	RAK-W 150	6"	150	159	146	150	445	445	/	354	410

Application


Product features

· Optimal product design. Adoption of computer-aided design (CAD SolidWorks ).Applicable to all general-purpose refrigerants and non-corrosive gases and liquids, including ammonia, fluorine, propane and propylene. 

· Perfect sealing performance. The moving part valve stem is provided with high-precision double O-ring and PTFE packing to ensure zero leakage. All sealing gaskets are environment- friendly asbestos-free ones that are resistant to both fluorine and ammonia. 

· The back seal design enables convenient valve maintenance during system operation. The double-cone seal design ensures large flow capacity, small pressure drop and high efficiency.A special linkage structure between valve stem and valve clack is adopted so that the concentricity of valve clack is adjusted automatically to ensure valve closing tightness and minimize valve clack friction for prolonging service life. 

· Compact structure, small size and light weight. Reducing freight cost, shortening installation time and lowing labor intensity.Best protection against rusting and corrosion. Special rust-proof materials are used on the surface. The internal and external surfaces are treated with special formula and process to ensure cleanness and rust-free. The stainless steel valve stem is polished by a special technique. 

· Possibility of direct welding to steel pipe or brazing to copper pipe. Customer options are offered for either hand-wheel or sealed cap.Each valve is inspected strictly according to European standards. 


Company show

Changzhou AMG Refrigeration Equipment Co., Ltd. has introduced the world's advanced technology and equipment for specialized manufacture of steel valves in AMG series. Because of their perfect design, excellent performance and high-quality manufacture, they were awarded "Golden Prize of China International Patent & Brand Exposition" and "Certificate of Recommendation for High-quality Products of the US Council of International Quality Authentication".

Steel valves in AMG series are featured by good-looking and artistic appearance, advanced and unique structure, lightand flexible operation, excellent sealing performance, zero leakage, high reliability and long service life. They are widely used inrefrigerated-storage and freezing systems in the industries of cooling, refrigeration and air-conditioning as well as the industries of food, beverage, bear, pharmaceutical, ship-building, gas, chemical, petroleum, etc.

A high-performance refrigeration system is dependable on high quality components. The application of AMG series steelvalves with high quality and reasonable price will offer you a complete alternative for expensive imported valves while adding luster to your products.

our customers


Certificate


packaging
We use wooden case or carton for packing.



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Mr.Ke Zhou