SVA-S40-50, SVA-S65-80D refrigeration stop valve produced by Danfoss

SVA-S40-50, SVA-S65-80D refrigeration stop valve produced by Danfoss Design 

Connections

Available with the following connections:

• Butt-weld DIN (EN 10220)

• Butt-weld ANSI (B 36.10 Schedule 80),DN 6 - 40 (¼ - 1½ in.)

• Butt-weld ANSI (B 36.10 Schedule 40),DN 50 - 200 (2 - 8 in.)

• Butt-weld GOST, (8734-75 and 8732-78)DN 10 - 150 (3�8 - 6 in.)

• Socket Weld (ANSI B 16.11),DN 15 - DN 50 (½ - 2 in.)

• Outside pipe thread G ½ in. - G 7�8 in. (ISO 228/1)

• FPT Female Pipe Thread, NPT(ANSI/ASME B 1.20.1), DN 15 - 32 (½ - 1¼ in.)

Housing

Made of special, cold resistant steel.

Valve cone

The valve cone can be turned on the spindle, thus there will be no friction between the cone and the seat when the valve is opened and closed

and the special design will avoid cone spin due to pulsation and vibration when the valve is in open position. A teflon tightening ring provides perfect sealing with minimum closing force.

Spindle

Made of polished stainless steel, ideal for leap seal sealing.

Packing gland

The low temperature packing gland ensures a perfect tightness in the range: –60/+150°C(–76/+302°F). The packing glands are equipped

with a scraper ring to prevent penetration of dirt and ice into the packing gland.

Pressure Equipment Directive (PED)

SVA valves are approved according to the European standard specified in the Pressure Equipment Directive and are CE marked. For further details / restrictions - see Installation Instruction.

Installation

It is recommended that the valves be installed in the direction of flow indicated by the arrow on the valve body. The valve can be installed in the opposite direction but this slightly reduces the k v -value (C v -value).The valve is designed to withstand high internal pressure. However, the piping system in general should be designed to avoid liquid traps and

reduce the risk of hydraulic pressure caused by thermal expansion.For further information refer to installation instructions for SVA.

SVA-S40-50, SVA-S65-80D refrigeration stop valve produced by Danfoss Ordering