Howden Compressors company began manufacturing screw compressors as one of the first in the world in 1938 and has wide experience in their manufacture.

Production of screw compressors at the company's facilities is equipped with state-of-the-art manufacturing equipment that ensures high precision machining of key parts including rotors and housing parts and high manufacturing quality and operational reliability accordingly. Oil-injected screw compressors manufactured by Howden Compressors cover a range of theoretical volumetric capacities from 300 to 10,500 cubic meters per hour.

Howden Compressors company manufactures two types of screw compressors:

• XRV type operates using rolling bearings and equipped with relatively simple shape case
• WRV type operates using journal bearings and equipped with double- wall case.

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XRV COMPRESSORS

Compressors for artificial cooling, designed specifically for refrigeration market.

Oil-injected compressor Howden XRV represents an oil-filled volumetric rotor unit with controlled power.

Operating medium compression is achieved by combining two screw rotors on parallel shafts mounted in the crankcase.

The XRV range includes rotors of three diameters: 127, 163 and 204 mm..

XRV specifications and advantages:

• Easy installation
• Ideal for systems with horizontal separator location
• Roller bearings
• Oil pump is not required for more than 90% of units.
• Adjustable volumetric ratio
• Manual or fully automatic adjustment system of volumetric ration is offered.
• Smooth performance control
• Maximum energy saving is ensured in combination with adjustable volumetric ratio.
• Easy servicing
• Special end caps ensure convenient access to rotation parts.

XRV compressors have various options of the design for geometric compression ratio from 2.2 to 5.8.

Designs with adjustment of the compression ratio from 2.2 to 5 in manual and automatic modes are also manufactured. The design provides for special connection enabling to use compressors in the economizer operation cycle with additional steam supply. A hydraulically-driven valve gear for 20-100% range is used for performance adjustment.

XRV127 compressor is manufactured in 4 versions differing in transmission ratio values.

SPECIFICATION FOR COMPRESSORS HOWDEN	* OPERATING VOLUME 50 Hz	* OPERATING VOLUME 60 Hz	SUCTION CHANNEL Ø	DISCHARGE CHANNEL Ø	SIZE A		SIZE B		SIZE C		SIZE D		APPROX. WEIGHT
	m3/h cfm	m3/h cfm	mm in	mm in	mm ft	in	mm ft	in	mm ft	in	mm ft	in	kg lb
XRV 127-R1	293 172	352,207	100 4	50 2	850 2	97⁄16	390 1	33⁄8	299 0	113⁄4	201 0	75⁄16	250,550.
XRV 127-R3	397,234.	476,280	100 4	50 2	900 2	117⁄16	390 1	33⁄8	209 0	81⁄4	291 0	111⁄2	250,550.
XRV 127-R4	489,288.	586,345	100 4	50 2	900 2	117⁄16	390 1	33⁄8	209 0	81⁄4	291 0	111⁄2	250,550.
XRV 127-R5	576,340.	- -	100 4	50 2	900 2	117⁄16	390 1	33⁄8	209 0	81⁄4	291 0	111⁄2	250,550.

XRV 163 and XRV 204 compressors are manufactured in two and four versions correspondingly

SPECIFICATIONS* FOR COMPRESSORS HOWDEN	OPERATING VOLUME 50 Hz	* OPERATING VOLUME 60 Hz	SUCTION CHANNEL Ø	DISCHARGE CHANNEL Ø	SIZE A		SIZE B		SIZE C		SIZE D		APPROX. WEIGHT
	m3/h cfm	m3/h cfm	mm in	mm in	mm ft	in	mm ft	in	mm ft	in	mm ft	in	kg lb
XRV 163/1.65	593,350.	712,420	125 6	76 3	1070 3	61⁄8	430 1	5.	200 0	77⁄8	250 0	97⁄8	364,802.
XRV 163/1.93	710,418.	852,500	125 6	76 3	1116 3	8.	430 1	5.	200 0	77⁄8	250 0	97⁄8	388,855.
XRV 204/1.10	812,478.	974,573	150 6	100 4	1178 3	10 3⁄8	516 1	83⁄8	240 0	91⁄2	305 0	12.	636 1400
XRV 204/1.45	1070 630	1284 756	150 6	100 4	1249 4	11⁄8	516 1	83⁄8	240 0	91⁄2	305 0	12.	660 1454
XRV 204/1.65	1219 717	1463 860	150 6	100 4	1255 4	11⁄2	516 1	83⁄8	240 0	91⁄2	305 0	12.	690 1520
XRV 204/1.93	1348 793	1618 952	150 6	100 4	1312 4	35⁄8	516 1	83⁄8	240 0	91⁄2	305 0	12.	736 1621

WRV compressors

Multipurpose process compressors for practical applications in any field

WRV series has 4 basic typical sizes, from 2 to 6 options of length-diameter ratio are offered (all compressors are with clockwise direction)

WRV specifications and advantages:

• Journal bearings - Long life.
• Two-wall design - Suitable for high-pressure operation.
• Structure materials can be selected to meet project specifications (e.g. API 619).
• Oil-injected bearings / seals design - High-quality gas-tight sealing simple design
• Capacity: The widest capacity range is offered.
• Number of WRV compressors installed all over the world is over 25,000.

WRV compressors can be used both for process gas compression and for artificial cooling.

All WRV series compressors are of double-wall design and use babbitt journal bearings with hermetical shaft sealing.

The wide range of Vi volume ratios from 2.1 to 5.8 is available for each compressor while capacity control by means of a slide valve is standard on all compressors. In addition there are a lot of possible options of standard design e.g.:

Option M

Mirror - for reversible rotation, with symmetrical drive motor and two-stage design.

Option H

Higher pressure - option with higher discharge pressure.

Option X

eXtra high - design with ultra high location of the delivery nozzle.

Option T

Tilting pad - equipped with fluid bearings e.g. for compliance with API 619.

Option S

Steel casings - steel casing for operation under high pressure or for compliance with special technical requirements.

Option N

Nodular cast iron design - case made of nodular cast iron for compliance with project specific technical specifications.

Specification for compressors HOWDEN WRV	* Operating volume 50 Hz	* Operating volume 60 Hz	Suction channel Ø	Discharge channel Ø	Amount A		Amount B		Amount C		Amount D		Approximate weight
	m3/h cfm	m3/h cfm	mm in	mm in	mm ft	in	mm ft	in	mm ft	in	mm ft	in	kg lb
WRV 163/1.45	550,325.	660,390	125 5	75 3	1063 3	5 7⁄8	490 1	71⁄4	248 0	9 3⁄4	250 0	9 7⁄8	470 1036
WRV 163/1.80	680,400.	820,480	125 5	75 3	1120 3	81⁄4	490 1	71⁄4	248 0	9 3⁄4	250 0	9 7⁄8	495 1091
WRV 204/1.10	815,480.	975,575	150 6	100 4	1201 3	111⁄4	640 2	11⁄8	310 0	12 1⁄4	315 0	12 3⁄8	760 1675
WRV 204/1.45	1095 645	1315 775	200 8	125 5	1273 4	21⁄8	640 2	11⁄8	310 0	12 1⁄4	315 0	12 3⁄8	850 1874
WRV 204/1.65	1220 720	1465 860	200 8	125 5	1314 4	33⁄4	640 2	11⁄8	310 0	12 1⁄4	315 0	12 3⁄8	887 1955
WRV 204/1.93	1340 790	1610 950	200 8	125 5	1370 4	6.	640 2	11⁄8	310 0	12 1⁄4	315 0	12 3⁄8	925 2039
WRVi 255/1.10	1590 935	1905 1120	200 8	150 6	1493 4	103⁄4	692 2	31⁄4	349 1	13⁄4	362 1	21⁄8	1200 2645
WRVi 255/1.30	1755 1035	2105 1240	200 8	150 6	1544 5	03⁄4	692 2	31⁄4	349 1	13⁄4	362 1	2 1⁄4	1270 2799
WRVi 255/1.45	2150 1270	2580 1520	255 10	200 8	1583 5	21⁄4	692 2	31⁄4	349 1	13⁄4	362 1	2 1⁄4	1325 2921
WRVi 255/1.65	2395 1410	2870 1690	255 10	200 8	1633 5	41⁄4	692 2	31⁄4	349 1	13⁄4	362 1	2 1⁄4	1422 3134
WRVi 255/1.93	2630 1550	3155 1855	255 10	200 8	1705 5	7.	692 2	31⁄4	349 1	13⁄4	362 1	2 1⁄4	1540 3395
WRV 255/2.20	3190 1880	3830 2255	255 10	200 8	1815 5	111⁄2	692 2	31⁄4	349 1	13⁄4	362 1	2 1⁄4	1650 3638
WRVi 321/1.32	3830 2255	4595 2705	255 10	200 8	2005 6	7.	940 3	1.	471 1	6 1⁄2	500 1	7 5⁄8	2925 6447
WRVi 321/1.65	4790 2820	5745 3380	300 12	255 10	2110 6	11.	940 3	1.	471 1	6 1⁄2	500 1	7 5⁄8	3150 6943
WRVi 321/1.93	5260 3095	6310 3715	300 12	255 10	2200 7	21⁄2	940 3	1.	471 1	6 1⁄2	500 1	7 5⁄8	3260 7186
WRV 321/2.20	6385 3760	7660 4510	350 14	300 12	2345 7	83⁄8	940 3	1.	471 1	6 1⁄2	500 1	7 5⁄8	3500 7715
WRVi 365/165	6771 3985	8012 4716	350 14	300 12	2418 7	111⁄4	1125 3	8 1⁄2	565 1	10 1⁄4	590 1	111⁄4	5500 12125
WRVi 365/193	7920 4662	9372 5516	350 14	300 12	2520 8	31⁄4	1125 3	8 1⁄2	565 1	10 1⁄4	590 1	111⁄4	6100 13450
WRV 510/1.32	7660 4510	9190 5410	350 14	255 10	2920 9	7.	1560 5	13⁄8	750 2	5 1⁄2	750 2	5 1⁄2	10800 23806
WRV 510/1.65	9575 5640	11490 6760	400 16	300 12	3090 10	15⁄8	1560 5	13⁄8	750 2	5 1⁄2	750 2	5 1⁄2	11500 25349
WRV 510/1.93	10510 6190	12615 7425	400 16	300 12	3233 10	71⁄4	1560 5	13⁄8	750 2	5 1⁄2	750 2	5 1⁄2	11800 26010