MHR Inc [ Mix Head Repair and Sales ]

The IDEAL Metering Pumps for Today's Foam Manufacturers

MHR Incorporated has introduced three new chemical metering pumps for use in the polyurethane foam manufacturing industry. These chemical pumps are suitable for use on all types of polyol blends and all types of isoyanates, available in variable or fixed displacement.

No more converted hydraulic pumps. Only top-notch chemical pumps that are designed for a specific use - POLYURETHANE FOAM.

MHR pumps are widely used for chemical metering on foam machines. They have been applied with isocyanates, TDI, MDI and TDI/MDI mixes, as well as, with polyether and polyester resins and methylene chloride.

In order to better meet today's environmental standards and improve productivity, MHR has significantly improved our range of high-pressure chemical metering pumps. These improvements overcome the process problems associated with the environmentally-friendly blowing agents that are increasingly being introduced.

For example, the environmental hazards associated with vaporized isocyanate has resulted in the development of a special double shaft seal arrangement to provide an effective, reliable and serviceable seal, or using a magnetic drive coupler converts the pump to being completely self contained.

The new MHR pumps, MH04, MH07 and MH20, were specifically designed for the future when CFC's are banned and other blowing agents will be used.

Although the main internal components remain the same, the bodies have been redesigned to make them more useful for the foam industry. These changes will handle the elevated pressure and limited temperatures that the new blowing agents must demand.

The MH04 pump can be adjusted accurately from 0 - 6.0 cm3/rev, the MH07 from 0 - 11.5 cm3/rev, and the MH20 from 0 - 33 cm3/rev. The handwheel control incorporates a dial indicator which shows the pump's setting at a glance.

Featured Highlights

1. MHR rigid alignment system integrates pump and motor together as one single unit. Alignment problems are elimated using either MHR standard Bell housing system or MHR magnetic drive coupler system.
2. Relocation of the inlet port to ensure fresh, cool fluid passes over all the internal components being discharged and to maintain a low temperature throughout the pump.
3. A 20 bar/ 290 PSI shaft seal, so that the pump can function with a much higher internal pressure. To achieve this, twin Teflon seals are used running on a new ceramic bush.
4. Pressure balanced control arrangements have been installed to ensure a high metering accuracy, irrespective of the internal pressure.
5. Leakage indicator systems and twin shaft seals are included as standard to provide maximum operator protection. The complete arrangement is now produced in cartridge form for easy servicing.

Affordable Cost.

Besides reliability and efficiency, the cost of these metering pumps is far less than other competitors. Price, long life expectancy and ease of servicing, all make these new pumps the ideal choice for polyurethane foam manufactures. Full technical advice and after-sales services are available, as standard from MHR Incorporated.

After-sales Service & Technical Advice.

MH7 Chemical Metering Pumps

Product Outline Specification
11.5 cc/rev Chemical Metering Pump

Feature	Units	Value
Max capacity	cc/rev	11.5
Min capacity	cc/rev	0.6
Max gallons	per/min	5.4
Min gallons	per/min	.28
Max outlet pressure TDI		210 bar/3045 psi
Max outlet pressure MDI, POLYOL		250 bar/3265 psi
Min outlet pressure		2 bar/29 psi
Max inlet pressure		20 bar/290 psi
Min inlet pressure	bar	atmospheric
Max Speed	rev/min	1800
Min Speed	rev/min	200
Max viscosity	cSt.	2000
Min viscosity	cSt.	1
Fluid cleanliness Polyol	ISO	18/13
Fluid cleanliness isocyanate	ISP	13/10
Max temperature		80�C / 176�F
Min temperature		10�-50�C / 50�-122�F

Details
A	Standard MHR Rigid Bell housing a. Optional MHR magnetic drive coupler
B	Viton seals used through out
C	Improved dial indicator
D	Extremely user friendly
E	Inlet port 3/4" NPTF, outlet port 1/2" NPTF a. Other fitting sizes available upon request
F	Tuft ride standard for corrosion resistance
G	Shaft sealing a. Double flap seals (standard) b. Double PTEE lip seals (optional) c. Mechanical seal (optional)
H	Pressure relief value (optional)
I	MHR technicians available for installation ( optional)
J	On site maintenance classes (optional)
K	Complete starter packages available for first time buyers

MH20 Chemical Metering Pumps

Product Outline Specification
33 cc/rev Chemical Metering Pump

Feature	Units	Value
Max capacity	cc/rev	33
Min capacity	cc/rev	5
Max gallons	per/min	15.7
Min gallons	per/min	.26
Max outlet pressure TDI		210 bar/3045 psi
Max outlet pressure MDI, POLYOL		250 bar/3265 psi
Min outlet pressure		2 bar/29 psi
Max inlet pressure		20 bar/290 psi
Min inlet pressure	bar	atmospheric
Max Speed	rev/min	1800
Min Speed	rev/min	200
Max viscosity	cSt.	2000
Min viscosity	cSt.	1
Fluid cleanliness Polyol	ISO	18/13
Fluid cleanliness isocyanate	ISP	13/10
Max temperature		80�C / 176�F
Min temperature		10�-50�C / 50�-122�F

Details
A	Standard MHR Rigid Bell housing a. Optional MHR magnetic drive coupler
B	Viton seals used through out
C	Improved dial indicator
D	Extremely user friendly
E	Inlet port 24 SAE Straight Thread, outlet port 24 SAE Straight Thread a. Other fitting sizes available upon request
F	Tuft ride standard for corrosion resistance
G	Shaft sealing a. Double flap seals (standard) b. Double PTEE lip seals (optional) c. Mechanical seal (optional)
H	Pressure relief value (optional)
I	MHR technicians available for installation ( optional)
J	On site maintenance classes (optional)
K	Complete starter packages available for first time buyers