Description

Airodyn is a thermodynamic type compressed air drain trap. The external body surfaces are electroless nickel plated (ENP) which is oxidation resistant.

Available Types

Model	Description
Airodyn	Standard model, ½" and ¾" screwed BSP or NPT
Airodyn S	Fine lap disc for ultra clean applications
Airodyn HD	For particularly oil contaminated air systems

Operating Media

• The Airodyn is designed for use on air or gases within PED group 2
• Note: The Airodyn is not suitable for use on PED group 1 liquids or gases

Standards and Certification

• Standards: This product fully complies with the requirements of the EU Pressure Equipment Directive/UK Pressure Equipment (Safety) Regulations
• Certification: This product is available with certification to EN 10204 3.1
• Note: All certification/inspection requirements must be stated at the time of order placement

Sizes and Pipe Connections

Model	Connection
Airodyn	½" screwed BSP or NPT
Airodyn	¾" screwed BSP or NPT
Airodyn HD	¾" screwed BSP

Pressure/Temperature Limits

Parameter	Value
Body design conditions	PN63
PMA - Maximum allowable pressure	63 bar g @ 120°C
TMA - Maximum allowable temperature	400°C @ 42 bar g
Minimum allowable temperature	0°C
PMO - Maximum operating pressure	63 bar g @ 120°C
TMO - Maximum operating temperature	400°C @ 42 bar g
Minimum operating temperature	0°C
PMOB - Maximum backpressure	Must not exceed 80% of inlet pressure, otherwise trap may not shut-off
Minimum operating differential pressure	0.25 bar

Designed for a maximum cold hydraulic test pressure of: 95 bar g

Important

The product must not be used in the shaded region of the chart.

Kv Values

Size	Kv
½" and ¾"	3.09

Conversion: Cv (UK) = Kv × 0.963 | Cv (US) = Kv × 1.156

Capacities

Materials

No.	Part	Material	Standard
1	Body	Stainless steel	ASTM A743 Gr. CA40F
2	Cap	Stainless steel	AISI 416
3	Disc	Stainless steel	BS 1449 420 S45
4	Strainer screen	Stainless steel	BS 1449 304 S16
5	Strainer cap	Stainless steel	AISI 416
6	Strainer cap gasket	Stainless steel	BS 1449 304 S16

Dimensions and Weights (Approximate) in mm and kg

Size	A	B	E	G	H	Weight
½"	41	78	55	85	20	0.77
¾"	44	85	60	100	20	0.95

Withdrawal distances for cap and strainer are shown in the dimensions drawing

Operation

One side of the disc (3) is plain with a single scribe towards the outer edge, whereas the other side of the disc has a machined circular groove.

• The Airodyn is supplied with the circular grooved side of the disc towards the seating face and is suitable for clean operating conditions
• If the operating conditions are dirty (probably with heavy oil contamination), unscrew the cap using preferably a ring spanner and turn over the disc so that the plain side with a bleed scribe is towards the seating face
• Replace cap - no gasket is required but a suitable high temperature anti-seize grease should be applied to the threads
• Tighten the cap to the recommended torque. Do not use a wrench of the Stillson type which may distort the cap
• In extremely dirty conditions it may be necessary to deepen the bleed scribe or to make additional scribes up to a maximum of 3

The scribe should be over the area covered by and extending beyond the outer seat face

Spare Parts

The spare parts available are shown in solid outline. Parts drawn in a grey line are not supplied as spares.

Available spares:

• Disc (packet of 3): 3
• Strainer screen and gasket: 4, 6
• Strainer cap gasket (packet of 3): 6

How to order spares: Always order spares by using the description given in the column headed 'Available spares' and state the size and type of trap. Example: 1 - Strainer screen for a Spirax Sarco ½" Airodyn compressed air drain trap.

Recommended Tightening Torques

Item	Part	Across Flats	Thread	Torque (N·m)
2	Cap	36 A/F	-	150
5	Strainer cap	32 A/F	M28	170-190

Safety Information, Installation and Maintenance

For full details see the Installation and Maintenance Instructions (IM-S48-06) supplied with the product.

Installation note: Preferably fitted in a horizontal pipe but can be fitted in vertically downwards pipe.

Disposal

The product is recyclable. No ecological hazard is anticipated with disposal of this product providing due care is taken.

How to Order

Example: 1 off Spirax Sarco ½" screwed BSP Airodyn compressed air drain trap.