High-pressure pumps Fristam FPH and FPHP series are centrifugal, multistage pumps. They are designed for recirculation in reverse osmosis systems, with the possibility of adaptation to specific products, processes, and applications. FPH pumps can operate with inlet pressures up to 600 pounds per square inch, while FPHP models can operate up to 1000 pounds per square inch.

Fristam FPH series pumps are fully suitable for CIP and SIP.

The pumped liquid may be homogeneous or may contain air, gases, or suspended particles.

We replaced the mechanical seal Fristam FPH 1232/180 VA (18.5 kW), Article No. 0474540103, with the R-H7N mechanical seal.

We also replaced the mechanical seal of the FPH 3532/175VA 11 kW pump, Article No. 1802600289, with the R-H7N mechanical seal.

Single-stage end-suction pumps CNP series NISO, NIS, NISF are compact and easy to install. Thanks to the technological design, the bearing assembly with the impeller and sealing unit can be dismantled without disconnecting the pump casing from the pipelines. The pump is equipped as standard with a wear-resistant mechanical seal NISO-43/BSE4 728124298676 graphite/silicon carbide/EPDM.

In our case, this pump was used for pumping gasoline, so the seal was replaced with a more suitable one — R-BIA 43, CAR/SIC, VITON, 304, T1V.

The following mechanical seals are also available: NISO-33/BSE4, NISO-53/BSE4, NISO-60/BSE4, NISO-53/SWF14, NISO-33/WWF14, NISO-60/WWF14, NISO-33/SWE4, NISO-18/BSE4, NISO-33/WWE4, NISO-33/WWE4, NISO-33/BSE6, NISO-33/SSE6, NISO-43/SWE4, NISO-43/BSE6, NISO-43/SSE6, NISO-43/SWF14, NISO-43/WWF14, NISO-53/SWE4, NISO-53/BSE6, NISO-53/SSE6, NISO-53/WWF14, NISO-60/SWE4.

We offer for pumps:

CNP CDLS CDLH — R-706A CDLC-12 (3R), CDLC-12/WB1F14, CDLC-12/WBF14, CDLC-12/WSF14, CDLC-16/WB1F14 CNP CDL CDLF.

CDLK CDLK — R-706E CDL12, CDL-12/WBF14, YFT-12 (CH-12), CDL16/WSF14, CDL-16/WBF14, YFT-16 (CH-16).

SZ — R-WB2 SZ-30 SZ35 SZ40 SZ45 SZ50 SZ55 MST4 SST4.

Screw pumps Seepex MD series operate perfectly when pumping liquid and viscous media, as well as corrosive fluids containing solid particles, ensuring high dosing accuracy.

Seepex MD pumps are used in agriculture, the food industry, automotive manufacturing, chemical and biochemical processing, paper mills, distilleries, oil refining, and many other sectors.

These pumps are easy to maintain thanks to the minimal number of components.

A single mechanical seal Seepex EagleBurgmann Mech Seal MG1 025 AQ1 VGG Material GRDB15025U41H0A7A7 and GRDAUA025U01H0A7A7 is used as standard. Optional configurations include a double mechanical seal, gland packing, or a lip seal.

KSB Etaline — a monoblock pump in an “in-line” configuration.

Shaft seal version

• E — External circulation;
• F — External flushing;
• S — Single mechanical seal with a vented chamber and rotating brake;
• V — Single mechanical seal with a vented chamber.

Seal code: single mechanical seal

01 Q1Q1VGG 1 (ZN1181)

06 U3BEGG (shaft assembly 25, 35) RMG13G606

07 Q1Q1EGG 1A (ZN1181)

08 AQ1VGG M32N69

09 U3U3VGG MG13G60

10 Q1Q1X4GG 1 (ZN1181)

11 BQ1EGG-WA (WA = drinking water) 1 (ZN1181)

22 AQ1EGG (shaft kit 55) M32N69

66 Q7Q7EGG MG13G6

67 Q6Q6X4GG MG13G60 / MG1G61S6

List of recommended seals for specific media

The Salvatore Robuschi RB (RBB-RBL-RBM) pumps are centrifugal pumps with a channel impeller designed according to ISO 5199 standards.

Various types of mechanical seals are used in these pumps in different configurations. The cylindrical seal chamber is built in accordance with EN 12756 standards. Single mechanical seals, double mechanical seals (tandem or back-to-back), or packing seals — all these configurations can be modified by the user using the same casing cover, replacing only a few parts. The pumps can also be equipped with flushing systems compliant with API 682 standards (such as PLAN 11, PLAN 52, PLAN 53, PLAN 54).

In this case, the pump uses a type C sealing system — that is, a double mechanical seal in a back-to-back configuration.

Shaft diameters for:

• Group 2 (RBB 65-20, 80-20, 80-25, 100-25, 125-25) — 43 mm
• Group 3 (RBB 80-31, 125-31, 125-40, 150-31) — 53 mm
• Group 4 (RBB 150-35, 200-35, 250-35) — 70 mm
• Group 5 (RBB 200-45, 250-45, 300-45, 300-46) — 90 mm
• Group 6 (RBB 400-60) — 100 mm

The flushing pressure should be 0.5 bar higher than the working medium pressure.

Wilo FA08.64E + FK17.1- 4/16K SN: 650217596 – a submersible pump for wastewater removal (including fecal matter and long-fibered and solid inclusions) used in water management, agriculture, construction, and industrial sectors, for water intake from rivers, reservoirs, and tanks.

Seal for the liquid and motor chamber type "K": cartridge double seal with friction pairs on both the motor side and the medium side – SiC/SiC. Rubber elements – NBR or Viton.

We used position 34 to replace the mechanical seal
6074592 shaft sealing H35/2 VP (alternative 6075005 shaft sealing H35/2 1.4462 VP) R-TSWE 35, A, SIC/SIC/SIC/SIC, VITON, 304.

The motor and seal chamber are filled with biologically inert white oil. For oil replacement, the following brands are recommended:

• Aral Autin PL*
• Shell ONDINA 919
• Esso MARCOL 52* or 82*
• BP WHITEMORE WOM 14*
• Texaco Pharmaceutical 30* or 40*

All oil brands marked with "*" are approved for contact with food products.

BTS Engineering mechanical seals ensure reliable and uninterrupted operation of the Wilo EMU FA pump.

MATRA S.p.a is a company that manufactures electric pumps: surface, borehole, and submersible, as well as pumping systems, including those for fire protection.

The company has been present on the international market for over 50 years. Its headquarters are located in Nonantola (MO), and the production plant is in Modena.

MATRA Spa is certified according to the UNI EN ISO 9001:2008 quality management system.

MATRA CM50-160A is a single-impeller centrifugal pump with a casing manufactured according to EN 733, designed for pumping clean water and chemically non-aggressive liquids without solid particles. It can be installed in any position, except with the inlet port facing upward, which — along with its special construction — makes it simple and convenient to use in many areas: domestic, industrial, agricultural, etc. It comes standard with a counterflange.

Mechanical seal — ceramic/graphite

Pumps for industrial commercial swimming pools from the Spanish manufacturer Kripsol, MARFIL series MRF1500A 1500 rpm are centrifugal pumps with mixed flow, suitable for the drainage and pre-filtration of large volumes of water at low pressure. The pump housing and pre-filter housing are made of grey cast iron GG-25, the impellers are bronze, and the motor is protected to IP 55 standard, class F.

Considering the operating conditions of Kripsol MRF1500A pumps (exposure to chlorine, peroxide, mineral salts, etc.), we have installed a mechanical seal R-BT-FN 35, SIC/SIC, VITON.

The chemical cantilever pump type X is designed for pumping chemically active and neutral liquids at temperatures ranging from 233 to 393 K (from -40 to +120°C).

The type X pump is a centrifugal, horizontal, single-stage pump with a casing-mounted bearing. The shaft seal of the pump is either a double mechanical seal or a gland packing.

In our case, the X100-80-160 pump is used for pumping ammonia, and a gland packing was used as the sealing method.

It is well known that a double mechanical seal offers several advantages over gland packing (reduced leakage of the pumped liquid, preservation of pump performance, and reduced maintenance costs).

The double mechanical seal was installed as follows, using two mechanical seals R-MG1:

Technical specifications

• Allowable radial runout – no more than 100 µm.
• Misalignment between chamber and shaft – no more than 0.2 mm.
• Coolant pressure in the chamber Pk = Pw (working pressure in the tank) + 10%.

To lubricate and cool the sealing surfaces, a barrier liquid (technical water, antifreeze) is used under a pressure that exceeds the working medium pressure by 0.1 to 0.2 MPa. In case of leakage, the barrier fluid enters the product.

Characteristics of the Ebara 3U-32-200NB-184JM centrifugal pump:

• monoblock design, all components of the flow part are made of stainless steel, both horizontal and vertical installation.

These pumps use high-quality mechanical seals in a variety of designs to suit the conditions of use.

Application:

• Increasing pressure
• Agriculture
• Water supply systems
• Water purification and reclamation
• Air conditioning systems