Product Overview

The FT44 is a carbon steel bodied ball float steam trap having stainless steel working internals and automatic air venting facility. The body and cover castings are produced by a TÜV approved foundry. The trap is supplied with integrally flanged connections and can be maintained without disturbing the pipework. Vertical flanged connections, designated FT44V, are available for all sizes. Flow direction for the horizontal trap is clearly illustrated on the body. For vertically orientated traps the flow is downwards only.

Product Features

• Available Options:
  • FT44: Horizontal flow
  • FT44V: Vertical flow
• Capsule: The BP99/32 capsule which is used in the FT44 is suitable for use on 150 °C superheat @ 0 bar g and 50 °C superheat @ 32 bar g.
• Standards: This product fully complies with the requirements of the European Pressure Equipment Directive 2014/68/EU and carries the CE mark when so required.
• Certification: This product is available with certification to EN 10204 3.1.
• Optional Extras:
  • A manually adjustable needle valve (designated 'C', i.e., FT44-C) can be fitted to the FT44 horizontal version only. This provides a steam lock release (SLR) feature in addition to the standard air vent.
  • The top of the cover can be drilled and tapped ⅜" BSP or NPT for the purpose of fitting a balance line if requested at the point of order.
  • The bottom of the cover can be drilled and tapped ⅜" BSP or NPT for the purpose of fitting a drain cock if requested at the point of order.

Sizes and Pipe Connections

DN15, DN20, DN25, DN40 and DN50.

• Horizontal traps: Note the flow direction when facing the body: DN15 to DN25 is left to right. DN40 and DN50 is right to left. Standard flanges are EN 1092 PN40 with face-to-face dimensions in accordance with EN 26554 (Series 1). ASME B 16.5 Class 150, ASME B 16.5 Class 300 and JIS/KS 20 flanges are also available with extended face-to-face dimensions.
• Vertical traps: Note that the flow direction is vertically downwards only. Standard flanges are EN 1092 PN40 with face-to-face dimensions in accordance with EN 26554 (Series 1). ASME B 16.5 Class 150, ASME B 16.5 Class 300 and JIS/KS 20 are also available.

Note: ASME / JIS/KS flanges are supplied with tapped holes to receive flange bolts. ASME flanges have UNC threads and JIS/KS have metric threads.

Pressure / Temperature Limits

Parameter	Value
Body Design Conditions	PN40
Maximum Allowable Pressure (PMA)	40 bar g @ 100 °C
Maximum Allowable Temperature (TMA)	300 °C @ 27.5 bar g
Minimum Allowable Temperature	-10 °C
Maximum Operating Pressure (PMO)	32 bar g @ 239 °C (for saturated steam service) Note: The DN40 and DN50 traps are limited to a PMO equal to ΔPMX
Maximum Operating Temperature (TMO)	285 °C @ 28.5 bar g
Minimum Operating Temperature	0 °C

Maximum Differential Pressure (ΔPMX):

Size	DN15, DN20, DN25	DN40, DN50
FT44-4.5	4.5 bar	4.5 bar
FT44-10	10 bar	10 bar
FT44-14	14 bar	-
FT44-21	21 bar	21 bar
FT44-32	32 bar	32 bar

Product is safe for use under full vacuum conditions.Designed for a maximum cold hydraulic test pressure: 60 bar g.Caution: The trap in its complete operational form must not be subjected to a pressure greater than 48 bar otherwise damage to the internal mechanism may result.

Materials

No.	Part	Size / Note	Material	Standard
1	Body		Carbon steel	1.0619+N/WCB
2	Cover studs		Steel	BS 4882 B7M
2	Cover nuts	DN15, DN20, DN25	Steel	EN 10269 25 Cr Mo 4
		DN40, DN50	Steel	BS 3692 Gr. 8
3	Cover gasket		Reinforced exfoliated graphite	-
4	Cover		Carbon steel	1.0619+N/WCB
5	Valve seat	DN15, DN20, DN25	Stainless steel	BS 970 431 S29
5	Main valve assembly with erosion deflector	DN40, DN50	Stainless steel	BS 3146 Pt2 ANC2 / BS 970 416 S37
6	Valve seat gasket	DN15, DN20, DN25	Stainless steel	BS 1449 304 S11
6	Main valve assembly gasket	DN40, DN50	Reinforced exfoliated graphite	-
7	Pivot frame assembly screws	DN15, DN20, DN25	Stainless steel	BS 4183 18/8
7	Main valve assembly bolts	DN40	Stainless steel	BS 970 302 S25
7	Main valve assembly studs and nuts	DN50	Stainless steel	BS 970 431 S29
8	Ball float and lever		Stainless steel	BS 1449 304 S16
9	Support frame	DN15, DN20, DN25	Stainless steel	BS 1449 304 S16
10	Pivot frame	DN15, DN20, DN25	Stainless steel	BS 1449 304 S16
11	Pivot pin	DN15, DN20, DN25	Stainless steel	-
12	Erosion deflector		Stainless steel	BS 970 431 S29
17	Air vent assembly		Stainless steel	-
18	Air vent seat gasket		Stainless steel	BS 1449 409 S19
19	SLR assembly		Stainless steel	BS 970 303 S31
20	SLR gasket		Steel	BS 1449 CS4
21	SLR seal		Graphite	-
26	Inlet plate	DN40, DN50 only	Stainless steel	BS 1449 304 S16

Dimensions and Weights (approximate in mm and kg)

Size	PN40 A (A)	ASME 300 A (A)	ASME 150 A (A)	JIS/KS 20K A (A)	B	C	D	(D)	E	F	(F)	Weight
DN15	150 (150)	209 (150)	203 (150)	206 (150)	80	80	215	(215)	120	155	(155)	10.8
DN20	150 (150)	209 (150)	205 (150)	210 (150)	80	80	225	(225)	120	165	(165)	10.8
DN25	160 (160)	212 (160)	208 (160)	210 (160)	115	85	276	(280)	170	215	(218)	15.0
DN40	230 (230)	327 (230)	321 (230)	322 (230)	130	115	326	(337)	200	200	(210)	33.0
DN50	230 (230)	320 (230)	313 (230)	311 (230)	141	123	332	(347)	200	235	(250)	34.0

(Dimensions in brackets relate to vertical connections only. PN40 face-to-face dimensions are in accordance with EN 26554 Series 1).

Capacities

Capacities shown are based on condensate at saturation temperature. Under start-up conditions when the condensate is cold the internal thermostatic air vent will be open and provides additional capacity to the main valve.

Minimum additional cold water capacity (kg/h):

ΔP (bar)	0.5	1	2	3	4.5	7	10	14	21	32
DN15 / DN20 (up to 21 bar)	450	600	780	1040	1140	1350	1530	1750	2300	-
DN15 / DN20 (32 bar only)	170	250	380	520	600	780	860	1140	1170	1200
DN25, DN40, DN50 (up to 21 bar)	460	680	900	1080	1300	1600	1980	2050	2600	-
DN25, DN40, DN50 (32 bar only)	90	120	350	460	600	850	900	1020	1200	1300

Spare Parts

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

Available spares:

• Main valve assembly with float (DN15, DN20 and DN25 horizontal traps)*: 5, 6, 7, 8, 9, 10, 11
• Main valve assembly with integral erosion deflector (DN40 and 50) ** (specify horizontal or vertical trap): 5, 6, 7, 12, 26
• Main valve assembly with float and erosion deflector (DN15 and DN20 vertical traps only): 5, 6, 7, 8
• Ball float (DN40 and DN50): 8
• Air vent assembly: 17, 18
• Manually adjustable needle valve (SLR) and air vent assembly (FT44-C): 17, 18, 19, 20, 21
• Complete set of gaskets (packet of 3 sets): 3, 6, 18, 20

* On horizontal traps the erosion deflector on the DN15, DN20 and DN25 is pressed into the body during manufacture and not available as a spare.** There is no erosion deflector on vertical traps.

Recommended tightening torques

Item	Size	Across Flats (A/F)	Thread Size / Bolt	Torque (N m)
2	DN15, DN20, DN25	17 A/F	M10 x 60	19 - 22
	DN40	24 A/F	M16 x 85	60 - 66
	DN50	24 A/F	M16 x 85	80 - 88
5	DN15, DN20, DN25	17 A/F		50 - 55
7	DN15, DN20, DN25		M5 x 20	2.5 - 2.8
	DN40	10 A/F	M6 x 20	10 - 12
	DN50	13 A/F	M8 x 20	20 - 24
17		17 A/F		50 - 55
19		22 A/F		50 - 55

Installation and Maintenance

For full details see the Installation and Maintenance Instructions (IM-S02-30) supplied with the product. Installation note: The FT44 must be installed with the direction of flow as indicated on the body, and with the float arm in a horizontal plane so that it rises and falls vertically.

Disposal

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

How to Order

Example: 1 off Spirax Sarco DN25 FT44-14 ball float steam trap, flanged to EN 1092 PN40 with carbon steel body and cover and thermostatic air vent.