Spirax Sarco MFP14, MFP14S and MFP14SS automatic pumps use steam or compressed air as the motive power to lift condensate and other liquids to elevated levels. Where suitable, they can drain equipment operating under vacuum or pressure. Combined with float-operated steam traps, they effectively remove condensate from temperature-controlled heat exchangers under a wide range of operating conditions.

Available Models

Body Material	Model
Ductile iron	MFP14
Cast steel	MFP14S
Stainless steel	MFP14SS

Standards and Certificates

The products comply with the European Pressure Equipment Directive 97/23/EC and ATEX Directive 94/9/EC. EN 10204 3.1 certificates are available. The design complies with AD-Merkblatter and ASME VIII Div 1 standards. Specify the required certificates when ordering.

Sizes and Pipe Connections

Model	Size and Connection Type
MFP14	1”, 1½”, 2” and 3” x 2” BSP threaded connections (BS 21 parallel); DN25, DN40, DN50 and DN80 x DN50 flanged connections to EN 1092 PN16, ANSI B 16.5 Class 150 and JIS/KS B 2238 10
MFP14S	DN50 flanged connections to EN 1092 PN16, ANSI B 16.5 Class 150 and JIS/KS B2238 10; 2” BSP/NPT threaded connections available for special requirements
MFP14SS	DN50 flanged connections to EN 1092 PN16, ANSI B 16.5 Class 150 and JIS/KS B 2238 10; 2” BSP/NPT threaded connections available for special requirements
Steam or compressed air inlet	½” BSP/NPT
Exhaust outlet	1” BSP/NPT

Additional Options

• Electronic monitor: A ½” BSP threaded connection is provided at the top of the pump cover for connection to an electronic monitor, such as EPM1, which features a simple 8-digit LCD display and an integral 1.5-volt lithium battery, or EPM2, which can be connected to a remote counter or building energy management system (BEMS).

• Insulation cover: Custom-made for each MFP14 size, the insulation cover provides both safety and energy-saving benefits. See TI-P136-07 for details.

Materials

No.	Component	Material	MFP14	Material	MFP14S	Material	MFP14SS
1	Pump cover	Ductile iron	EN JS 1025, EN-GJS-400-18-LT	Cast steel	DIN GSC 25N, ASTM A216 WCB	Stainless steel	BS EN 10213-4, 144091, ASTM A351 CF3M
2	Pump cover gasket	-	-	-	-	-	-
3	Pump cover bolt	Stainless steel	ISO 3506 Gr. A2-70	Stainless steel	ISO 3506 Gr. A2-70	Stainless steel	ISO 3506 Gr. A2-70
4	Pump body	Ductile iron	EN-GJS-400-18-LT	Cast steel	DIN GSC 25N, ASTM A216 WCB	Stainless steel	BS EN 10213-4, 144091, ASTM A351 CF3M
5	Pillar	Stainless steel	BS 970, 431 S29	Stainless steel	BS 970, 431 S29	Stainless steel	BS 970, 431 S29
6	Connecting rod, float and rod	Stainless steel	BS 1449, 304 S11	Stainless steel	BS 1449, 304 S11	Stainless steel	BS 1449, 304 S11
7	Float	Stainless steel	AISI 304	Stainless steel	AISI 304	Stainless steel	AISI 304
8	Lifting eye, integral	Ductile iron	EN-GJS-400-18-LT	Cast steel	DIN GSC 25N, ASTM A216 WCB	Stainless steel	BS EN 10213-4, 144091, ASTM A351 CF3M
9	Mechanism linkage	Stainless steel	BS 3146 pt.2 ANC 2	Stainless steel	BS 3146 pt.2 ANC 2	Stainless steel	BS 3146 pt.2 ANC 2
10	Spring	Inconel 718	ASTM 5962/ASTM B367	Inconel 718	ASTM 5962/ASTM B367	Inconel 718	ASTM 5962/ASTM B367
11	Plug	Steel	DIN 267 Part III Class 5.8	Steel	DIN 267 Part III Class 5.8	Steel	DIN 267 Part III Class 5.8
12	Check valve	Stainless steel	-	Stainless steel	-	Stainless steel	-
13	Screwed flange	Steel	-	Steel	-	Steel	-
14	Mechanism bracket	Stainless steel	BS 3146 pt. 2 ANC 4B	Stainless steel	BS 3146 pt. 2 ANC 4B	Stainless steel	BS 3146 pt. 2 ANC 4B
15	Bracket bolt	Stainless steel	BS 6105 Gr. A2-70	Stainless steel	BS 6105 Gr. A2-70	Stainless steel	BS 6105 Gr. A2-70
16	Inlet valve seat	Stainless steel	BS 970, 431 S29	Stainless steel	BS 970, 431 S29	Stainless steel	BS 970, 431 S29
17	Inlet valve	Stainless steel	ASTM A276 440B	Stainless steel	ASTM A276 440B	Stainless steel	ASTM A276 440B
18	Inlet valve seat gasket	Stainless steel	BS 1449 409 S19	Stainless steel	BS 1449 409 S19	Stainless steel	BS 1449 409 S19
19	Exhaust valve seat	Stainless steel	BS 970 431 S29	Stainless steel	BS 970 431 S29	Stainless steel	BS 970 431 S29
20	Exhaust valve	Stainless steel	BS 3146 pt. 2 ANC 2	Stainless steel	BS 3146 pt. 2 ANC 2	Stainless steel	BS 3146 pt. 2 ANC 2
21	Exhaust valve seat gasket	Stainless steel	BS 1449 409 S19	Stainless steel	BS 1449 409 S19	Stainless steel	BS 1449 409 S19
22	EPM actuator	Alnico	-	Alnico	-	Alnico	-
23	O-ring seal	EPDM	-	EPDM	-	EPDM	-
28	Spring retaining pin	Stainless steel	BS 970 431 S29	Stainless steel	BS 970 431 S29	Stainless steel	BS 970 431 S29

Pressure/Temperature Limits

Body Design Condition	MFP14	MFP14S	MFP14SS
Maximum motive fluid inlet pressure, steam or other gas	13.8 bar g	13.8 bar g	10.96 bar g
PMA maximum allowable pressure	16 bar g@120°C	16 bar g@120°C	16 bar g@93°C
TMA maximum allowable temperature	300°C@12.8 bar g	300°C@10.8 bar g	300°C@9.3 bar g
Minimum allowable temperature; consult Spirax Sarco for low-temperature applications	0°C	0°C	0°C
PMO maximum operating pressure	13.8 bar g@198°C	13.8 bar g@198°C	10.96 bar g@188°C
TMO maximum operating temperature	198°C@13.8 bar g	198°C@13.8 bar g	188°C@10.96 bar g
Minimum operating temperature; consult Spirax Sarco for low-temperature applications	0°C	0°C	0°C
Recommended inlet head, measured from pump cover	0.3m	0.3m	0.3m
Minimum inlet head, measured from pump cover	0.15m; reduced capacity, applicable to DN40 and DN25	0.15m; reduced capacity, applicable to DN40 and DN25	0.15m; reduced capacity, applicable to DN40 and DN25
Standard pumped liquid specific gravity	-	-	-
Pump displacement per cycle, DN80 x 50	19.3 liters	19.3 liters	19.3 liters
Pump displacement per cycle, DN50	12.8 liters	12.8 liters	12.8 liters
Pump displacement per cycle, DN40	7 liters	7 liters	7 liters
Steam consumption	Up to 20 kg/h	Up to 20 kg/h	Up to 16 kg/h
Air consumption, standard conditions	Up to 5.6 dm³/s	Up to 5.6 dm³/s	Up to 4.4 dm³/s
Ambient temperature limit	-10°C to 200°C	-10°C to 200°C	-10°C to 200°C

The total lift or backpressure, consisting of the static head plus the pressure in the recovery system, must be lower than the motive fluid inlet pressure. Calculate total lift as follows: height H in meters x 0.0981 + pressure in the recovery pipe in bar g + fluid friction loss in the downstream piping in bar. When calculating downstream piping friction loss, use the lower of six times the actual condensate flow rate or 30000L/h as the fluid flow rate.

Weight

Size	Pump Weight (kg)	Weight Including Check Valve and Flanges (kg)
DN25	51	58
DN40	54	63
DN50	72	82
DN80 x DN50	88	98

Selection

Select the appropriate condensate recovery pump size based on motive medium pressure, system backpressure, inlet head and required capacity. First calculate the total effective head that the condensate recovery pump must overcome during operation, then use the capacity chart to determine the pump size. If the inlet head is not 0.3m, correct the flow rate using the appropriate inlet-head correction factor. If the motive medium is not steam, also correct the capacity using the applicable correction factor.

Safety Information, Installation and Maintenance

See the installation and maintenance guide supplied with the product (IM-P136-03). For optimum pump operation, flash steam must be vented or condensed before the condensate enters the pump.

Ordering Information

Example: 1 - Spirax Sarco DN50 MFP14 automatic condensate recovery pump, EN 1092 PN16 flanged connections and a BSP threaded motive medium inlet. Check valve and flanges must be ordered separately.