DW+ Series – Piston & Bi-Lobe Rotor Pumps

Product Type(s) : Positive Displacement Pumps

Description :

The DW+ Series is a versatile, positive displacement pump ideal for high-viscosity and shear-sensitive fluids. Its gentle, pulsation free, low shear design, ensures gentle consistent flow and easy maintenance. Perfect for dairy, beverage, food, pharmaceuticals, personal care, chemical and industrial markets, it meets stringent sanitary standards while boosting operational efficiency.

WHERE TO BUY

Building on the trusted heritage of our DW Series, the new DW+ pumps represent the next generation in positive displacement pump technology. Designed to enhance performance while maintaining the core principles of the DW Series to optimize performance and reliability while further reducing maintenance needs.

Key Benefits

Gentle Product Handling

The rotor designs available ensure maximum product integrity and minimize risk of potential damage to sensitive products. Especially the piston rotor creates a long sealing path to minimize shearing, preserving the quality and integrity of high-value products. This ensures delicate formulations retain their texture and sensory attributes. By reducing processing damage, we help prevent quality issues, where changes in viscosity can impact texture and taste.

Pulse-Free Operation for System Protection

The unique piston rotor design ensures pulse-free operation which consequently reduces vibration and noise in the pipeline, prevents pressure surges and protects valves and sensitive downstream equipment from potential damage. By maintaining a steady flow, the DW+ Series promotes seamless integration with equipment such as filling machines and ensures a consistent process flow, extending the lifespan of your equipment.

Low NPSHr

The unique rotor design makes a low NPSHr value which makes the DW+ pumps ideal for many applications such as ultra-filtration and eliminating cavitation.

High Volumetric Efficiency

The DW+ Series is designed for outstanding efficiency. Internal clearances have been minimized by optional rotor types (Super tight), together with high RPM speed to allow a smaller pump size selection for medium viscosity applications. This reduces both the initial investment and running costs.

Non-galling Alloy Rotors

Compared with normal stainless steel, the optional NGA rotor will make further narrow clearance which could avoid down time and pump housing damaged in the real operation.

Ultra-Hygienic, Accommodates Harsh CIP-Cycles

All DW+ models are CIP/SIP cleanable, featuring a profiled front cover gasket for enhanced cleanability. Designed to withstand rapid temperature changes, these pumps handle very harsh CIP cycles.

Worldwide Footprint

The DW series is widely recognized and approved globally through SPX FLOW and APV system solutions. With exceptional expertise in pumping high-viscosity products, it stands as a trusted and reliable reference in the industry.

Global Hygienic Design

The DW+ Series is 3A approved and designed to EHEDG standards.

Theory of Operation

The APV DW+ Positive Displacement Pump operates using a rotary piston or bi-lobe rotor mechanism to transfer high-viscosity liquids with minimal shearing, ensuring product integrity and efficiency. The pump functions by creating expanding cavities at the inlet, allowing fluid to enter the chamber, and then meshing the rotors to force the liquid out through the outlet. This results in a consistent and pulse-free flow, reducing vibrations and pressure surges.

Designed for ultra-hygienic applications, the DW+ pump integrates non-galling alloy rotors that maintain tight clearances, ensuring the pumping efficiency as well as rotor getting galled with pump casing. The piston rotor design provides an extended sealing path, optimizing efficiency while reducing energy consumption. Bi-lobe rotors offer an alternative for applications involving large suspended solids, enhancing versatility across industries such as food, dairy, pharmaceuticals, and chemicals.

The DW+ pump is equipped with helical gears and double-tapered roller bearings, improving durability and reducing noise. It features an integrated pressure relief valve to protect the system from overpressure conditions, and a thermal jacket option to maintain product temperature consistency.

With its CIP/SIP (Clean-In-Place/Sterilize-In-Place) capability, easy maintenance through front-loaded mechanical seals, and a low Net Positive Suction Head (NPSH) requirement on eliminating cavitation, the DW+ pump ensures reliability, safety, and operational efficiency in critical processing environments.

Key Applications

Beverage Fruit Juice Cider and Wine Liquid Sugar and Glucose
Dairy Processing Cream, Milk Cheese Curd & Whey Cottage Cheese Yogurt
Food Fruit Preserves Soups and Sauces Baby Food Chocolate Yeast
Pharmaceutical and Toiletries Antibiotics Toothpaste Cough Medicine Shampoo
Chemical / Industrial Solvent, Paints, Fuels Resins, Polymers & Sludges Oil & Lubricants

Dimensions
Specifications

Model DW+1/003/-

APV DW4 plus Assembly Dimensional Drawing.pdf

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	8.54	1.57	1.5	4.29	4.76	0.47	5.75	5.9	6.53	4.8	7.6	3.7	3.27	DN15	218	86	18	8
MM	217	40	38	109	121	12	146	150	166	122	193	94	83	218	86	18	8	17

Weight: 37.48 lbs (17 Kg)

Oil Capacity: 0.21 GAL (0.8 L)

Model DW+1/004/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	8.54	1.57	1.5	4.29	4.76	0.47	5.75	5.9	6.53	4.8	7.6	3.7	3.27	DN15	8.58	3.38	0.71	0.31
MM	217	40	38	109	121	12	146	150	166	122	193	94	83		218	86	18	8

Weight: 37.48 lbs (17 Kg)

Oil Capacity: 0.21 GAL (0.8 L)

Model DW+1/007/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	8.74	1.57	1.5	4.29	4.76	0.47	5.75	5.9	6.53	4.8	7.6	3.7	3.27	1	8.58	3.38	0.71	0.31
MM	222	40	38	109	121	12	146	150	166	122	193	94	83	25	218	86	18	8

Weight: 39.68 lbs (18 Kg)

Oil Capacity: 0.21 GAL (0.8 L)

Model DW+2/006/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	9.76	1.97	1.42	4.72	5.59	0.67	6.93	7.01	7.64	5.71	8.98	4.41	3.82	1	9.92	3.86	0.87	0.47
MM	248	50	36	120	142	17	176	178	194	145	228	112	97	25	252	98	22	12

Weight: 55.11 lbs (25 Kg)

Oil Capacity: 0.34 GAL (1.3 L)

Model DW+2/007/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	9.76	1.97	1.42	4.72	5.59	0.67	6.93	7.01	7.64	5.71	8.98	4.41	3.82	1	9.92	3.86	0.87	0.47
MM	248	50	36	120	142	17	176	178	194	145	228	112	97	25	252	98	22	12

Weight: 55.11 lbs (25 Kg)

Oil Capacity: 0.34 GAL (1.3 L)

Model DW+2/013/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	9.92	1.97	1.42	4.72	5.59	0.67	6.93	7.01	7.64	5.71	8.98	4.41	3.82	1.5	9.92	3.86	0.87	0.47
MM	252	50	36	120	142	17	176	178	194	145	228	112	97	38	252	98	22	12

Weight: 59.52 lbs (27 Kg)

Oil Capacity: 0.34 GAL (1.3 L)

Model DW+3/014/-

B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	10.67	2.36	1.57	4.84	6.3	0.79	7.87	7.72	8.35	6.22	9.92	4.72	4.17	1.5	10.75	4.41	0.98	0.51
MM	271	60	40	123	160	20	200	196	212	158	252	120	106	38	273	112	25	13

Weight: 74.96 lbs (34 Kg)

Oil Capacity: 0.37 GAL (1.4 L)

Model DW+3/017/-

B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	10.67	2.36	1.57	4.84	6.3	0.79	7.87	7.72	8.35	6.22	9.92	4.72	4.17	1.5	10.75	4.41	0.98	0.51
MM	271	60	40	123	160	20	200	196	212	158	252	120	106	38	273	112	25	13

Weight: 74.96 lbs (34 Kg)

Oil Capacity: 0.37 GAL (1.4 L)

Model DW+3/030/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	11.02	2.36	1.57	4.84	6.3	0.79	7.87	7.72	8.35	6.22	9.92	4.72	4.17	2	10.75	4.41	0.98	0.51
MM	280	60	40	123	160	20	200	196	212	158	252	120	106	51	273	112	25	13

Weight: 88.18 lbs (40 Kg)

Oil Capacity: 0.37 GAL (1.4 L)

Model DW+3/050/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	11.97	2.36	1.57	4.84	6.3	0.79	7.87	7.72	8.35	6.22	9.92	4.72	4.17	2	10.75	4.41	0.98	0.51
MM	304	60	40	123	160	20	200	196	212	158	252	120	106	51	273	112	25	13

Weight: 99.21 lbs (45 Kg)

Model DW+4/033/-

B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	13.86	3.15	1.77	6.38	8.07	0.79	9.64	9.37	10.24	7.48	11.81	5.59	5.12	2	12.91	5.12	1.38	0.55
MM	352	80	45	162	205	20	245	238	260	190	300	142	130	51	328	130	35	14

Weight: 141.09 lbs (64 Kg)

Oil Capacity: 0.79 GAL (3.0 L)

Model DW+4/039/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	14.37	3.15	1.77	6.38	8.07	0.79	9.64	9.37	10.24	7.48	11.81	5.59	5.12	3	12.91	5.12	1.38	0.55
MM	365	80	45	162	205	20	245	238	238	260	190	300	142	130	76	328	130	35

Weight: 158.73 lbs (72 Kg)

Oil Capacity: 0.79 GAL (3.0 L)

Model DW+4/073/-

Model DW+4/125/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	15.71	3.15	1.77	6.38	8.07	0.79	9.64	9.37	10.24	7.48	11.81	5.59	5.12	3	12.91	5.12	1.38	0.55
MM	399	80	45	162	205	20	245	238	260	190	300	142	130	76	328	130	35	14

Weight: 187.39 lbs (85 Kg)

Oil Capacity: 0.79 GAL (3.0 L)

Model DW+5/080/-

B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	18.86	4.17	2.79	9.13	10.31	0.98	12.28	11.93	12.83	9.45	14.57	6.97	6.42	2.5	17.09	6.5	1.65	0.67
MM	479	106	71	232	262	25	312	303	326	240	370	177	163	63	434	165	42	17

Weight: 332.90 lbs (151 Kg)

Oil Capacity: 1.85 GAL (7.0 L)

Model DW+5/093/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	18.86	4.17	2.79	9.13	10.31	0.98	12.28	11.93	12.83	9.45	14.57	6.97	6.42	2.5	17.09	6.5	1.65	0.67
MM	479	106	71	232	262	25	312	303	326	240	370	177	163	63	434	165	42	17

Weight: 332.90 lbs (151 Kg)

Oil Capacity: 1.85 GAL (7.0 L)

Model DW+5/142/-

B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	19.49	4.17	2.79	9.13	10.31	0.98	12.28	11.93	12.83	9.45	14.57	6.97	6.42	3	17.09	6.5	1.65	0.67
MM	495	106	71	232	262	25	312	303	326	240	370	177	163	76	434	165	42	17

Weight: 337.30 lbs (153 Kg)

Oil Capacity: 1.85 GAL (7.0 L)

Model DW+5/256/-

B	C	D	E	F	G	H	J	K	L	M	N	P	Q

Model *DW6/172/-

B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	27.24	3.86	3.54	13.82	16.53	1.57	19.68	14.8	19.33	11.53	21.3	8.19	9.64	3	20.79	8.58	1.97	0.94
MM	692	98	90	351	420	40	500	376	491	293	541	208	245	76	528	218	50	24

Weight: 815.71 lbs (370 Kg)

Oil Capacity: 6.60 GAL (25 L)

*DW6 retains the same design as the DW Series

Model *DW6/198/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	27.24	3.86	3.54	13.82	16.53	1.57	19.68	14.8	19.33	11.53	21.3	8.19	9.64	3	20.79	8.58	1.97	0.94
MM	692	98	90	351	420	40	500	376	491	293	541	208	245	76	528	218	50	24

Weight: 815.71 lbs (370

Kg)

Oil Capacity: 6.60 GAL (25 L)

*DW6 retains the same design as the DW Series

Model *DW6/308/-

B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	27.8	3.86	3.54	13.82	16.53	1.57	19.68	14.8	19.33	11.53	21.3	8.19	9.64	4	20.79	8.58	1.97	0.94
MM	706	98	90	351	420	40	500	376	491	293	541	208	245	102	528	218	50	24

Weight: 859.80 lbs (390 Kg)

Oil Capacity: 6.60 GAL (25 L)

*DW6 retains the same design as the DW Series

Model *DW6/519/-

	B	C	D	E	F	G	H	J	K	L	M	N	P	Q	S	T	U	W
IN	28.82	3.86	3.54	13.82	16.53	1.57	19.68	14.8	19.33	11.53	21.3	8.19	9.64	DN	20.79	8.46	1.97	0.94
MM	732	98	90	351	420	40	500	376	491	293	541	208	245	150	528	215	50	24

Weight: 1014.12 lbs (460 Kg)

Oil Capacity: 6.60 GAL (25 L)

*DW6 retains the same design as the DW Series

The DW+ pump series is designed for ultra-hygienic applications. The range consists of 6 sizes (27 models) with capacities ranging from 3 liters/100 revs to 519 liters /100 revs (0.8 gal/100 revs to 137 gal/100 revs) and pressures up to 30 bar (435 psi). All product-contact parts are made from AISI 316L stainless steel and all elastomers comply with FDA-requirements.

There are two types of rotors available: Piston and Bi-lobe. For general or standard applications, the Bi-lobe rotor is typically a suitable solution. However, the piston rotor is the optimal choice for shear-sensitive products due to its long sealing path and minimal clearance design.

Options
Performance

Elastomer Material
EPDM. FPM and FKKM (Perfluoro elastomer)

Standard Connections
Tri-clamp is the standard connection. Other sanitary and industrial fittings are available.

2 Rotor materials
316L and Non-galling alloy

2 Rotor Options by Type

Piston and Bi-lobe rotors. On the smallest model in each size, the piston rotors can be easily replaced with bi-lobe rotors without altering the rotor case. Additionally, the pump’s porting can be switched between horizontal and vertical orientations (and vice versa) without requiring any modifications to the pump or the use of a specialized gear case assembly.

4 Rotor Options by Application

Multi Duty Rotors
Standard rotors suitable for most applications. The clearance is greater than that of the high efficiency rotors.

High-Efficiency Rotors
Designed for low viscosity products. The size of the rotors has been increased, and the clearance is minimal.

High Temperature Rotors
The Bi-lobe rotors can be supplied as high temperature rotors, suitable for product temperatures up to 180°C (356°F). The rotors are smaller for expansion due to the temperature.

Super tight Rotors

Minimum clearance in all the options to make minimum product slip back.

6 Advanced Shaft Seal Design

The pump offers a variety of front-loaded interchangeable shaft seals tailored for specific applications:

Single Mechanical Seal.

Flushed single Mechanical Seals

Flushed double Mechanical Seals

Lip Seals

Confectionary Seals

Packed Gland Seal:

3 Accessories

Integrated Pressure Relief Valve

Thermal Jacket

Rectangular Inlet

Certificates

Material Heat Certificate

2.1 EN10204

2.2 EN10204

3.1 EN10204

Certified Approval Drawing

GA drawing 2D (*pdf)

Pump Model 3D (*stp)

ISO 9001 Certification

GOST certificate

3A Certificate

RA measurement Report

Electro-Polish/Passivation Certificate

Food Contact Certificate

NPSH Test (one duty)

FDA Seal Certification

DW+ Series – Piston & Bi-Lobe Rotor Pumps

FEATURES

Key Benefits

Beverage

Dairy Processing

Food

Pharmaceutical and Toiletries

Chemical / Industrial

DIMENSIONS & SPECIFICATIONS

Model DW+1/003/-

Model DW+1/004/-

Model DW+1/007/-

Model DW+2/006/-

Model DW+2/007/-

Model DW+2/013/-

Model DW+3/014/-

Model DW+3/017/-

Model DW+3/030/-

Model DW+3/050/-

Model DW+4/033/-

Model DW+4/039/-

Model DW+4/073/-

Model DW+4/125/-

Model DW+5/080/-

Model DW+5/093/-

Model DW+5/142/-

Model DW+5/256/-

Model *DW6/172/-

Model *DW6/198/-

Model *DW6/308/-

Model *DW6/519/-

OPTIONS & PERFORMANCE

VIDEOS

How Our Parts Agreements Simplify Logistics and Ensure Production Continuity

Superior Aftermarket Spare Parts- SPX FLOW

Uptime Optimization Tool - SPX FLOW

Downloads

DW+ Series – Piston & Bi-Lobe Rotor Pumps

FEATURES

Key Benefits

Beverage

Dairy Processing

Food

Pharmaceutical and Toiletries

Chemical / Industrial

DIMENSIONS & SPECIFICATIONS

Model DW+1/003/-

Model DW+1/004/-

Model DW+1/007/-

Model DW+2/006/-

Model DW+2/007/-

Model DW+2/013/-

Model DW+3/014/-

Model DW+3/017/-

Model DW+3/030/-

Model DW+3/050/-

Model DW+4/033/-

Model DW+4/039/-

Model DW+4/073/-

Model DW+4/125/-

Model DW+5/080/-

Model DW+5/093/-

Model DW+5/142/-

Model DW+5/256/-

Model *DW6/172/-

Model *DW6/198/-

Model *DW6/308/-

Model *DW6/519/-

OPTIONS & PERFORMANCE

VIDEOS

How Our Parts Agreements Simplify Logistics and Ensure Production Continuity

Superior Aftermarket Spare Parts- SPX FLOW

Uptime Optimization Tool - SPX FLOW

Downloads

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DW Series – Piston & Bi-Lobe Rotor Pumps

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